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This report has been generated at Fri Oct 4 20:32:37 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
27-09-02 122059 87644
28-09-02 123673 89338
29-09-02 123700 89158
30-09-02 123661 89486
01-10-02 123327 89413
02-10-02 124542 90028
03-10-02 124827 89771
04-10-02 124944 88633
Possible Bogus Routes
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
14015 Number of ASes in routing system
5367 Number of ASes announcing only one prefix
2193 Largest number of prefixes announced by an AS
AS209 : ASN-QWEST Qwest
72696064 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 04Oct02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 124806 88707 36099 28.9% All ASes
AS209 2193 1142 1051 47.9% ASN-QWEST Qwest
AS4999 1028 132 896 87.2% SPRINTIPDIAL Sprint
AS174 1824 1234 590 32.3% PSINET PSINet Inc.
AS7132 595 73 522 87.7% SBIS-AS Southwestern Bell
Internet Services
AS3908 1115 610 505 45.3% SUPERNETASBLK SuperNet, Inc.
AS701 1786 1284 502 28.1% ALTERNET-AS UUNET
Technologies, Inc.
AS2548 1586 1123 463 29.2% ICIX-MD-AS Business Internet,
Inc.
AS7018 1366 960 406 29.7% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1305 937 368 28.2% ASN-TELSTRA Telstra Pty Ltd
AS4323 648 298 350 54.0% TW-COMM Time Warner
Communications, Inc.
AS7843 715 385 330 46.2% ADELPHIA-AS Adelphia Corp.
AS3215 626 305 321 51.3% AS3215 France Telecom Transpac
AS852 762 461 301 39.5% ASN852 Telus Advanced
Communications
AS6197 390 98 292 74.9% BATI-ATL BellSouth Network
Solutions, Inc
AS18566 291 4 287 98.6% COVAD Covad Communications
AS7046 579 304 275 47.5% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS6347 358 88 270 75.4% DIAMOND SAVVIS Communications
Corporation
AS4151 280 32 248 88.6% USDA-1 USDA
AS1580 319 85 234 73.4% HQ, 5th Signal Command
AS1 672 449 223 33.2% GNTY-1 Genuity
AS4814 255 35 220 86.3% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS705 407 197 210 51.6% ASN-ALTERNET UUNET
Technologies, Inc.
AS1239 849 651 198 23.3% SprintLink Sprint
AS4355 382 184 198 51.8% ERMS-EARTHLNK EARTHLINK, INC
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS690 518 325 193 37.3% NSFNET-T3-RT-AS Merit Network
Inc.
AS6595 250 66 184 73.6% DODDSEUR DoD Education
Activity Network Assistance
Center
AS3356 378 211 167 44.2% LEVEL3 Level 3 Communications,
LLC
AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government
Systems Division
AS6327 180 19 161 89.4% SHAWFIBER Shaw Fiberlink
Limited
Total 22056 11733 10323 46.8% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)lists.apnic.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 04 Oct, 2002
Analysis Summary
----------------
BGP routing table entries examined: 115352
Prefixes after maximum aggregation: 74354
Unique aggregates announced to Internet: 55194
Total ASes present in the Internet Routing Table: 13853
Origin-only ASes present in the Internet Routing Table: 11981
Origin ASes announcing only one prefix: 5379
Transit ASes present in the Internet Routing Table: 1872
Transit-only ASes present in the Internet Routing Table: 61
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 18
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 35
Number of addresses announced to Internet: 1190818664
Equivalent to 70 /8s, 250 /16s and 115 /24s
Percentage of available address space announced: 32.1
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 54.6
Total number of prefixes smaller than registry allocations: 47772
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18762
Total APNIC prefixes after maximum aggregation: 11392
Prefixes being announced from the APNIC address blocks: 17280
Unique aggregates announced from the APNIC address blocks: 10967
APNIC Region origin ASes present in the Internet Routing Table: 1620
APNIC Region origin ASes announcing only one prefix: 528
APNIC Region transit ASes present in the Internet Routing Table: 282
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 12
Number of APNIC addresses announced to Internet: 97984928
Equivalent to 5 /8s, 215 /16s and 33 /24s
Percentage of available APNIC address space announced: 64.4
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72181
Total ARIN prefixes after maximum aggregation: 46019
Prefixes being announced from the ARIN address blocks: 50446
Unique aggregates announced from the ARIN address blocks: 15294
ARIN Region origin ASes present in the Internet Routing Table: 7784
ARIN Region origin ASes announcing only one prefix: 2567
ARIN Region transit ASes present in the Internet Routing Table: 752
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 181344320
Equivalent to 10 /8s, 207 /16s and 24 /24s
Percentage of available ARIN address space announced: 67.6
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 19582
Total RIPE prefixes after maximum aggregation: 14861
Prefixes being announced from the RIPE address blocks: 16255
Unique aggregates announced from the RIPE address blocks: 10812
RIPE Region origin ASes present in the Internet Routing Table: 4072
RIPE Region origin ASes announcing only one prefix: 2203
RIPE Region transit ASes present in the Internet Routing Table: 759
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 14
Number of RIPE addresses announced to Internet: 114297472
Equivalent to 6 /8s, 208 /16s and 10 /24s
Percentage of available RIPE address space announced: 75.7
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 4827
Total LACNIC prefixes after maximum aggregation: 2082
Prefixes being announced from the LACNIC address blocks: 4210
Unique aggregates announced from the LACNIC address blocks: 2624
LACNIC Region origin ASes present in the Internet Routing Table: 316
LACNIC Region origin ASes announcing only one prefix: 81
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 6.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 11373568
Equivalent to 0 /8s, 173 /16s and 140 /24s
Percentage of available LACNIC address space announced: 67.8
LACNIC AS Blocks 26592 - 26623
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1198 1187 881 Telstra Pty Ltd
703 398 375 314 UUNET
2907 361 1831 341 SINET Japan
2764 342 356 314 connect.com.au pty ltd
7474 303 275 206 Optus Communications Pty Ltd
4134 292 2268 96 Data Communications Bureau
17557 289 21 111 Pakistan Telecom
4755 254 139 73 Videsh Sanchar Nigam Ltd. Aut
4766 249 1808 157 Korea Internet Exchange for "
4814 224 80 16 China Telecom (Group)
17676 224 3506 33 XTAGE CORPORATION
9443 186 57 71 Primus Telecommunications
9583 165 32 5 Satyam Infoway Ltd.,
4515 137 102 78 Star Internet Services Ltd.
9768 134 385 73 Korea Telecom
7657 128 22 85 The Internet Group Limited
9800 122 188 24 CHINA UNICOM
4739 117 56 108 Commerical Internet eXchange
4713 115 1049 104 NTT Communications Corporatio
9498 109 8 21 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1784 9231 1282 UUNET Technologies, Inc.
7018 1337 7195 937 AT&T
3908 1049 1652 509 Supernet, Inc.
1239 847 3170 649 Sprint
852 756 1145 457 Telus Advanced Communications
7843 717 371 298 Adelphia Corp.
1 662 8089 439 GENUITY
7132 595 672 71 Southwestern Bell Internet Se
7046 579 878 300 UUNET Technologies, Inc.
209 526 2066 341 Qwest
4323 525 435 165 Time Warner Communications, I
690 518 75 325 Merit Network
7066 490 204 257 Virginia Polytechnic Institut
2548 447 1134 277 Business Internet, Inc.
705 409 130 199 UUNET Technologies, Inc.
3549 409 725 295 Global Crossing
6197 390 601 40 BellSouth Network Solutions,
4355 382 292 104 EarthLink, Inc.
2914 368 2027 361 Verio, Inc.
15290 358 230 175 AT&T Canada IES
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 874 2407 728 UUNET - Commercial IP service
3301 387 907 339 TeliaNet Sweden
3215 294 677 170 France Telecom Transpac
3320 248 1966 225 Deutsche Telekom AG
680 238 2151 234 DFN-IP service G-WiN
5515 214 783 177 Sonera Solution Autonomous Sy
5400 210 84 98 BT Ignite European Backbone
1257 205 444 201 SWIPnet Swedish IP Network
719 191 306 130 LANLINK autonomous system
786 176 1873 176 The JANET IP Service
8708 151 41 145 Romania Data Systems S.A.
3303 144 532 143 Swisscom Ltd
2856 135 788 125 BTnet UK Regional network
3246 123 373 116 Song Networks
12302 122 17 29 MobiFon S.A.
5511 111 192 89 France Telecom
8220 110 168 102 COLT Internet - International
3233 107 10 8 RNC - Romanian Natioanal R&D
3269 106 690 64 TELECOM ITALIA
2874 103 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 201 299 113 UniNet S.A. de C.V.
7303 172 27 49 Telecom Argentina Stet-France
11172 170 88 35 Servicios Alestra S.A de C.V
6503 151 206 106 AVANTEL, S.A.
10834 147 75 35 ADVANCE TELECOMUNICACIONES S.
6140 115 76 28 ImpSat USA, Inc.
16814 107 7 13 NSS, S.A.
13999 103 19 8 Mega Cable S.A. de C.V.
10620 93 6 29 TVCABLE BOGOTA
11340 79 2 24 Red Universitaria Nacional
1916 73 409 40 Fundacao de Amparo a Pesquisa
15311 73 24 31 Telefonica Empresas
15034 72 5 32 TIBA SA
11992 70 7 30 Integrated Systems
4270 68 18 10 Red de Interconexion Universi
7984 64 27 42 Global One Colombia
2277 63 16 3 ECUANET - CORPORACION ECUATOR
4926 63 4 51 Telintar S.A.
8065 60 6 16 Empresas Publicas de Medellin
16528 57 5 35 ImpSat S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1049 540 Supernet, Inc.
7132 595 524 Southwestern Bell Internet Se
7843 717 419 Adelphia Corp.
7018 1337 400 AT&T
4323 525 360 Time Warner Communications, I
6197 390 350 BellSouth Network Solutions,
1221 1198 317 Telstra Pty Ltd
1580 319 307 ANOSCEUR
852 756 299 Telus Advanced Communications
18566 291 287 Covad Communications
7046 579 279 UUNET Technologies, Inc.
4355 382 278 EarthLink, Inc.
6347 341 267 SAVVIS Communications Corpora
4151 280 265 USDA
7066 490 233 Virginia Polytechnic Institut
376 337 229 Reseau Interordinateurs Scien
1 662 223 GENUITY
705 409 210 UUNET Technologies, Inc.
11492 222 209 Cable One
4814 224 208 China Telecom (Group)
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 GENUITY
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.236.0.0/16 568 DISO-UNRRA
192.31.242.0/24 771 NASA Ames Research Center
192.44.0.0/19 702 UUNET - Commercial IP service
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.91.198.0/24 2568 CTS Network Services
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.136.136.0/24 7046 UUNET Technologies, Inc.
192.136.136.0/22 568 DISO-UNRRA
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.172.0.0/19 568 DISO-UNRRA
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:6 /10:7 /11:12 /12:37
/13:90 /14:238 /15:428 /16:7274 /17:1501 /18:2708
/19:7863 /20:7508 /21:5292 /22:8106 /23:9863 /24:63607
/25:171 /26:208 /27:116 /28:84 /29:52 /30:107
/31:0 /32:56
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 619 1049 Supernet, Inc.
702 538 874 UUNET - Commercial IP service
7843 528 717 Adelphia Corp.
701 485 1784 UUNET Technologies, Inc.
690 465 518 Merit Network
7018 420 1337 AT&T
7066 388 490 Virginia Polytechnic Institut
1580 306 319 ANOSCEUR
18566 285 291 Covad Communications
6197 274 390 BellSouth Network Solutions,
7046 265 579 UUNET Technologies, Inc.
6198 243 313 BellSouth Network Solutions,
1239 240 847 Sprint
3301 231 387 TeliaNet Sweden
3215 225 294 France Telecom Transpac
4355 220 382 EarthLink, Inc.
11492 217 222 Cable One
209 203 526 Qwest
3320 189 248 Deutsche Telekom AG
5400 188 210 BT Ignite European Backbone
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 12:550 13:10 15:4 17:7 20:4
24:841 25:1 32:41 38:24 40:7 44:1
55:1 57:14 61:358 62:235 63:1851 64:1283
65:1523 66:1203 67:110 68:124 80:300 81:56
128:118 129:125 130:19 131:54 132:9 133:2
134:129 135:9 136:589 137:104 138:153 139:70
140:166 141:66 142:71 143:49 144:152 145:17
146:240 147:225 148:248 149:78 150:42 151:73
152:297 153:37 154:9 155:105 156:102 157:107
158:69 159:139 160:23 161:73 162:123 163:88
164:262 165:127 166:106 167:273 168:301 169:61
170:180 171:3 192:5378 193:2385 194:2020 195:810
196:435 198:3599 199:3058 200:2613 202:3416 203:4798
204:3253 205:2105 206:2334 207:2480 208:2552 209:2580
210:588 211:246 212:880 213:729 214:7 215:19
216:2926 217:502 218:47 219:2
End of report
1
0
New/Revised RIPE Document Announcement
--------------------------------------
A revised/new document is available from the RIPE document store.
Ref: ripe-259
Title: Smallest RIPE NCC Allocation / Assignment Sizes
Author: Joao Luis Silva Damas, Leo Vegoda
Date: 2 October 2002
Format: PS=10860 TXT=2132
Obsoletes: ripe-222, ripe-242
Obsoleted by:
Updates:
Updated by:
Short content description -------------------------
The "Smallest RIPE NCC Allocation / Assignment Sizes" document
contains the size of the minimum and default allocations made by the
RIPE NCC to Local Internet Registries (LIRs) and End Users from IPv4
and IPv6 CIDR blocks allocated to the RIPE NCC by the Internet
Assigned Numbers Authority (IANA).
Accessing the RIPE document store
---------------------------------
You can access the RIPE documents in HTML format via WWW.
RIPE-259 is available at the following URL:
http://www.ripe.net/ripe/docs/smallest-alloc-sizes.html
The RIPE document store is also available via anonymous FTP to
ftp.ripe.net, in the directory ripe/docs.
The URLs for the new documents on the FTP-server are:
ftp://ftp.ripe.net/ripe/docs/ripe-259.ps PostScript version
ftp://ftp.ripe.net/ripe/docs/ripe-259.txt plain text version
1
0
>Date: Wed, 18 Sep 2002 09:09:51 -0400
>From: Zhuoqing Morley Mao <zmao(a)research.att.com>
>
>Could you elaborate on the phenonmeon you observed? In particular, how
>were you able to determine it was caused by the BGP convergence effects?
Hi Morley,
we (ACOnet/AS1853) do have our primary transit through Sprint/AS1239 and
a (lowerpref) backup through Geant/AS20965_3549. We are receiving a
full table from both (on two different routers). The path through
Sprint for most of the US Internet is shorter than through Geant. When
comparing the flap statistics on the two routers many of the listed
prefixes are the same with about the same "duration", but the number of
flaps seen through the longer path is much bigger (factor of 2-3 !)
As I wrote in a previous mail, feel free to use our looking-glass
http://www.aco.net/lookingglass/lg.html [flap statistics]
to see the enormous amount of flaps counted by our Geant connected
router. Unfortunately our Sprint connected router is not accessible
through the looking-glass. But if you like I could produce snapshots
and send them to you.
>We hope that someone in Europe could also help out with the experiment,
>details of which are described at http://www.psg.com/~zmao
I think there was the idea to eventually enable RIS boxes as BGP
beacons ? We do have a RIPE RIS box in Vienna at the VIX (RRC05).
>We currently have two beacons in the U.S., some topology diversity would
>really help.
If RIS doesn't help we are considering setting up an ACOnet beacon for
you, however this might not happen before begin of October.
>Thanks!
You are welcome !
Kind regards
CP
--- ---------------------------------------------------------------------- ---
--- Christian Panigl : Vienna University Computer Center - ACOnet ---
--- VUCC - ACOnet - VIX : -------------------------------------------- ---
--- Universitaetsstrasse 7 : Mail: Panigl(a)CC.UniVie.ac.at (CP8-RIPE) ---
--- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) ---
--- ---------------------------------------------------------------------- ---
3
2
ANNOUNCEMENT: RIPE NCC's New Projects Proudly Presents "RIS Routing Beacons"
by Matthew Williams 30 Sep '02
by Matthew Williams 30 Sep '02
30 Sep '02
[Apologies for duplicate emails]
Dear All,
RIPE NCC are pleased to announce "RIS Routing Beacons":
------------------------------------------------------
At RIPE 43, Randy Bush held an interesting talk about some unwanted
effects of route flap damping, as specified in RIPE-229. Subsequently,
RIPE NCC's RIS project offered to assist these studies by adding the
"Routing Beacon" functionality to our Remote Route Collectors (RRC). The
geographically disperse distribution of our collectors makes them ideal
for this purpose.
RIS Routing Beacon Address Schema:
----------------------------------
195.80.224.0/24 RRC00 - RIPE NCC, Amsterdam, NL
195.80.225.0/24 RRC01 - LINX, London, UK
195.80.226.0/24 RRC02 - SFINX, Paris, FR
195.80.227.0/24 RRC03 - AMS-IX, Amsterdam, NL
195.80.228.0/24 RRC04 - CIXP, Geneva, CH
195.80.229.0/24 RRC05 - VIX, Vienna, AT
195.80.230.0/24 RRC06 - NSPIXP2, Otemachi, JP
195.80.231.0/24 RRC07 - Netnod-IX, Stockholm, SE
195.80.232.0/24 RRC08 - MAE-WEST, San Jose, CA, US
These prefixes are advertised ("network x.x.x.x") at 00:00h, 04:00h,
08:00h, 12:00h, 16:00h and 20:00h (UTC) with the corresponding
withdrawals ("no network x.x.x.x") two hours later.
Please see URL:
http://www.ripe.net/ris/beacon.html
---------------------------------
For more information about the RIS:
http://www.ripe.net/ris/
Best regards,
The RIS team:
James Aldridge, Daniel Karrenberg,
Henk Uijterwaal, Arife Vural and Matthew Williams
---
> Matthew Williams-Bywater (MW243-RIPE)
> Customer Liaison Engineer
> RIPE NCC (http://www.ripe.net/np/)
1
0
This report has been generated at Sun Sep 29 06:32:47 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
22-09-02 121438 87731
23-09-02 121323 87980
24-09-02 121407 88246
25-09-02 121566 88349
26-09-02 121459 87822
27-09-02 122059 87644
28-09-02 123673 89338
29-09-02 123685 89454
Possible Bogus Routes
10.5.5.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.11.11.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.33.0.0/23 AS174 PSINET PSINet Inc.
10.33.8.0/24 AS174 PSINET PSINet Inc.
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
13991 Number of ASes in routing system
5313 Number of ASes announcing only one prefix
1940 Largest number of prefixes announced by an AS
AS174 : PSINET PSINet Inc.
73212416 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 29Sep02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 123655 89454 34201 27.7% All ASes
AS209 1818 1042 776 42.7% ASN-QWEST Qwest
AS3908 1124 622 502 44.7% SUPERNETASBLK SuperNet, Inc.
AS701 1786 1286 500 28.0% ALTERNET-AS UUNET
Technologies, Inc.
AS2548 1582 1119 463 29.3% ICIX-MD-AS Business Internet,
Inc.
AS7132 603 140 463 76.8% SBIS-AS Southwestern Bell
Internet Services
AS174 1940 1520 420 21.6% PSINET PSINet Inc.
AS7018 1360 959 401 29.5% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1306 940 366 28.0% ASN-TELSTRA Telstra Pty Ltd
AS4323 647 305 342 52.9% TW-COMM Time Warner
Communications, Inc.
AS7843 712 410 302 42.4% ADELPHIA-AS Adelphia Corp.
AS852 758 458 300 39.6% ASN852 Telus Advanced
Communications
AS6197 383 97 286 74.7% BATI-ATL BellSouth Network
Solutions, Inc
AS7046 585 312 273 46.7% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS18566 273 4 269 98.5% COVAD Covad Communications
AS4151 279 32 247 88.5% USDA-1 USDA
AS4355 383 145 238 62.1% ERMS-EARTHLNK EARTHLINK, INC
AS1 669 447 222 33.2% GNTY-1 Genuity
AS6347 393 173 220 56.0% DIAMOND SAVVIS Communications
Corporation
AS4814 255 37 218 85.5% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS705 409 199 210 51.3% ASN-ALTERNET UUNET
Technologies, Inc.
AS1239 849 652 197 23.2% SprintLink Sprint
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS690 518 325 193 37.3% NSFNET-T3-RT-AS Merit Network
Inc.
AS6595 250 68 182 72.8% DODDSEUR DoD Education
Activity Network Assistance
Center
AS4134 302 122 180 59.6% ERX-CHINALINK Data
Communications Bureau
AS2386 421 243 178 42.3% INS-AS AT&T Data
Communications Services
AS3356 389 212 177 45.5% LEVEL3 Level 3 Communications,
LLC
AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government
Systems Division
AS6327 180 20 160 88.9% SHAWFIBER Shaw Fiberlink
Limited
AS376 337 184 153 45.4% RISQ-AS Reseau
Interordinateurs Scientique
Quebecois (RISQ)
Total 20910 12114 8796 42.1% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)lists.apnic.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This report has been generated at Fri Sep 27 20:32:43 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
20-09-02 121329 87082
21-09-02 121481 87337
22-09-02 121438 87731
23-09-02 121323 87980
24-09-02 121407 88246
25-09-02 121566 88349
26-09-02 121459 87822
27-09-02 122059 87558
Possible Bogus Routes
7.1.1.0/30 AS12357 COMUNITEL Comunitel Global Autonomous System
10.5.5.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.11.11.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.33.0.0/23 AS174 PSINET PSINet Inc.
10.33.8.0/24 AS174 PSINET PSINet Inc.
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
13979 Number of ASes in routing system
5289 Number of ASes announcing only one prefix
1816 Largest number of prefixes announced by an AS
AS209 : ASN-QWEST Qwest
73220608 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').
--- 27Sep02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121705 87359 34346 28.2% All ASes
AS209 1816 1038 778 42.8% ASN-QWEST Qwest
AS3908 1124 621 503 44.8% SUPERNETASBLK SuperNet, Inc.
AS701 1786 1286 500 28.0% ALTERNET-AS UUNET
Technologies, Inc.
AS2548 1586 1123 463 29.2% ICIX-MD-AS Business Internet,
Inc.
AS7132 602 140 462 76.7% SBIS-AS Southwestern Bell
Internet Services
AS7018 1359 959 400 29.4% ATT-INTERNET4 AT&T WorldNet
Services
AS7843 711 341 370 52.0% ADELPHIA-AS Adelphia Corp.
AS1221 1304 938 366 28.1% ASN-TELSTRA Telstra Pty Ltd
AS4323 645 295 350 54.3% TW-COMM Time Warner
Communications, Inc.
AS852 756 458 298 39.4% ASN852 Telus Advanced
Communications
AS6197 382 97 285 74.6% BATI-ATL BellSouth Network
Solutions, Inc
AS7046 590 316 274 46.4% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS18566 272 4 268 98.5% COVAD Covad Communications
AS174 593 330 263 44.4% PSINET PSINet Inc.
AS4151 279 32 247 88.5% USDA-1 USDA
AS4355 382 144 238 62.3% ERMS-EARTHLNK EARTHLINK, INC
AS1 672 442 230 34.2% GNTY-1 Genuity
AS6347 397 170 227 57.2% DIAMOND SAVVIS Communications
Corporation
AS4814 255 36 219 85.9% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS705 408 198 210 51.5% ASN-ALTERNET UUNET
Technologies, Inc.
AS1580 210 11 199 94.8% HQ, 5th Signal Command
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS690 517 324 193 37.3% NSFNET-T3-RT-AS Merit Network
Inc.
AS1239 1110 930 180 16.2% SprintLink Sprint
AS2386 421 243 178 42.3% INS-AS AT&T Data
Communications Services
AS3356 389 214 175 45.0% LEVEL3 Level 3 Communications,
LLC
AS6595 232 60 172 74.1% DODDSEUR DoD Education
Activity Network Assistance
Center
AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government
Systems Division
AS4134 302 139 163 54.0% ERX-CHINALINK Data
Communications Bureau
AS6327 180 20 160 88.9% SHAWFIBER Shaw Fiberlink
Limited
Total 19679 10950 8729 44.4% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)lists.apnic.net
routing-wg(a)ripe.net
afnog(a)afnog.org
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 27 Sep, 2002
Analysis Summary
----------------
BGP routing table entries examined: 115493
Prefixes after maximum aggregation: 74306
Unique aggregates announced to Internet: 54740
Total ASes present in the Internet Routing Table: 13819
Origin-only ASes present in the Internet Routing Table: 11950
Origin ASes announcing only one prefix: 5354
Transit ASes present in the Internet Routing Table: 1869
Transit-only ASes present in the Internet Routing Table: 61
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 18
Illegal AS announcements present in the Routing Table: 7
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 35
Number of addresses announced to Internet: 1193952488
Equivalent to 71 /8s, 42 /16s and 68 /24s
Percentage of available address space announced: 32.2
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 54.6
Total number of prefixes smaller than registry allocations: 47686
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18725
Total APNIC prefixes after maximum aggregation: 11349
Prefixes being announced from the APNIC address blocks: 17243
Unique aggregates announced from the APNIC address blocks: 10956
APNIC Region origin ASes present in the Internet Routing Table: 1620
APNIC Region origin ASes announcing only one prefix: 529
APNIC Region transit ASes present in the Internet Routing Table: 280
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 97742368
Equivalent to 5 /8s, 211 /16s and 110 /24s
Percentage of available APNIC address space announced: 64.3
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72293
Total ARIN prefixes after maximum aggregation: 46009
Prefixes being announced from the ARIN address blocks: 50847
Unique aggregates announced from the ARIN address blocks: 15576
ARIN Region origin ASes present in the Internet Routing Table: 7759
ARIN Region origin ASes announcing only one prefix: 2546
ARIN Region transit ASes present in the Internet Routing Table: 753
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 181229888
Equivalent to 10 /8s, 205 /16s and 89 /24s
Percentage of available ARIN address space announced: 67.5
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 19657
Total RIPE prefixes after maximum aggregation: 14869
Prefixes being announced from the RIPE address blocks: 16289
Unique aggregates announced from the RIPE address blocks: 10077
RIPE Region origin ASes present in the Internet Routing Table: 4066
RIPE Region origin ASes announcing only one prefix: 2199
RIPE Region transit ASes present in the Internet Routing Table: 757
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 14
Number of RIPE addresses announced to Internet: 117783680
Equivalent to 7 /8s, 5 /16s and 60 /24s
Percentage of available RIPE address space announced: 78.0
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 4812
Total LACNIC prefixes after maximum aggregation: 2079
Prefixes being announced from the LACNIC address blocks: 4222
Unique aggregates announced from the LACNIC address blocks: 2619
LACNIC Region origin ASes present in the Internet Routing Table: 314
LACNIC Region origin ASes announcing only one prefix: 80
LACNIC Region transit ASes present in the Internet Routing Table: 67
Average LACNIC Region AS path length visible: 6.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 11311872
Equivalent to 0 /8s, 172 /16s and 155 /24s
Percentage of available LACNIC address space announced: 67.4
LACNIC AS Blocks 26592 - 26623
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1197 1187 881 Telstra Pty Ltd
703 396 368 311 UUNET
2907 359 1815 339 SINET Japan
2764 345 357 317 connect.com.au pty ltd
7474 305 275 205 Optus Communications Pty Ltd
4134 290 2268 96 Data Communications Bureau
17557 288 21 110 Pakistan Telecom
4755 253 141 73 Videsh Sanchar Nigam Ltd. Aut
4766 249 1808 157 Korea Internet Exchange for "
4814 224 80 16 China Telecom (Group)
17676 221 3458 32 XTAGE CORPORATION
9443 185 57 70 Primus Telecommunications
9583 175 32 5 Satyam Infoway Ltd.,
4515 139 102 80 Star Internet Services Ltd.
9768 136 385 74 Korea Telecom
7657 128 22 85 The Internet Group Limited
9800 122 188 24 CHINA UNICOM
4739 117 56 108 Commerical Internet eXchange
4713 116 1049 105 NTT Communications Corporatio
9498 109 8 21 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1787 9245 1287 UUNET Technologies, Inc.
7018 1323 7184 932 AT&T
1239 1121 3178 653 Sprint
3908 1047 1652 508 Supernet, Inc.
852 750 1145 454 Telus Advanced Communications
7843 713 371 304 Adelphia Corp.
1 657 8088 434 GENUITY
7132 602 638 140 Southwestern Bell Internet Se
7046 590 879 311 UUNET Technologies, Inc.
4323 523 435 165 Time Warner Communications, I
209 521 2066 348 Qwest
690 517 75 324 Merit Network
7066 488 204 258 Virginia Polytechnic Institut
2548 447 1118 274 Business Internet, Inc.
3549 418 727 298 Global Crossing
705 409 130 199 UUNET Technologies, Inc.
4355 382 292 104 EarthLink, Inc.
6197 382 597 39 BellSouth Network Solutions,
2914 368 2027 361 Verio, Inc.
15290 361 230 178 AT&T Canada IES
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 872 2406 727 UUNET - Commercial IP service
3301 385 907 341 TeliaNet Sweden
3215 294 677 170 France Telecom Transpac
3320 243 1966 221 Deutsche Telekom AG
680 238 2151 234 DFN-IP service G-WiN
5400 215 86 102 BT Ignite European Backbone
5515 214 783 177 Sonera Solution Autonomous Sy
1257 202 444 199 SWIPnet Swedish IP Network
719 190 306 130 LANLINK autonomous system
786 177 1873 177 The JANET IP Service
8708 148 41 143 Romania Data Systems S.A.
3303 143 532 142 Swisscom Ltd
2856 132 786 122 BTnet UK Regional network
12302 124 18 31 MobiFon S.A.
3246 123 373 116 Song Networks
5511 109 189 87 France Telecom
8220 108 168 101 COLT Internet - International
3233 107 10 8 RNC - Romanian Natioanal R&D
2874 104 85 40 Global One Services AB
3269 104 658 63 TELECOM ITALIA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 199 298 110 UniNet S.A. de C.V.
7303 172 27 50 Telecom Argentina Stet-France
11172 167 88 34 Servicios Alestra S.A de C.V
6503 159 206 113 AVANTEL, S.A.
10834 146 75 34 ADVANCE TELECOMUNICACIONES S.
16814 107 7 13 NSS, S.A.
13999 103 19 8 Mega Cable S.A. de C.V.
6140 99 76 27 ImpSat USA, Inc.
10620 93 6 29 TVCABLE BOGOTA
11340 80 2 25 Red Universitaria Nacional
15034 74 6 32 TIBA SA
1916 73 409 40 Fundacao de Amparo a Pesquisa
11992 70 7 30 Integrated Systems
4270 68 18 10 Red de Interconexion Universi
15311 68 24 31 Telefonica Empresas
2277 66 16 3 ECUANET - CORPORACION ECUATOR
7984 66 27 42 Global One Colombia
4926 64 4 52 Telintar S.A.
8065 59 6 16 Empresas Publicas de Medellin
16528 57 5 35 ImpSat S.A.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1047 539 Supernet, Inc.
1239 1121 468 Sprint
7132 602 462 Southwestern Bell Internet Se
7843 713 409 Adelphia Corp.
7018 1323 391 AT&T
4323 523 358 Time Warner Communications, I
6197 382 343 BellSouth Network Solutions,
1221 1197 316 Telstra Pty Ltd
852 750 296 Telus Advanced Communications
7046 590 279 UUNET Technologies, Inc.
4355 382 278 EarthLink, Inc.
6347 346 268 SAVVIS Communications Corpora
18566 272 268 Covad Communications
4151 279 264 USDA
376 343 233 Reseau Interordinateurs Scien
7066 488 230 Virginia Polytechnic Institut
1 657 223 GENUITY
705 409 210 UUNET Technologies, Inc.
4814 224 208 China Telecom (Group)
11492 215 201 Cable One
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65011 PRIVATE 207.8.204.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.8.227.0/24 4231 You Tools Corporatio
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65506 PRIVATE 207.106.30.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.58.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.90.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.122.0/24 4231 You Tools Corporatio
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 GENUITY
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.236.0.0/16 568 DISO-UNRRA
192.31.242.0/24 771 NASA Ames Research Center
192.44.0.0/19 702 UUNET - Commercial IP service
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.91.198.0/24 2568 CTS Network Services
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.136.136.0/24 7046 UUNET Technologies, Inc.
192.136.136.0/22 568 DISO-UNRRA
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.172.0.0/19 568 DISO-UNRRA
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:6 /10:7 /11:12 /12:37
/13:89 /14:236 /15:428 /16:7272 /17:1501 /18:2690
/19:7876 /20:7533 /21:5285 /22:8097 /23:9823 /24:63807
/25:165 /26:221 /27:115 /28:83 /29:48 /30:88
/31:0 /32:55
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 618 1047 Supernet, Inc.
702 536 872 UUNET - Commercial IP service
7843 524 713 Adelphia Corp.
701 487 1787 UUNET Technologies, Inc.
690 465 517 Merit Network
1239 445 1121 Sprint
7018 407 1323 AT&T
7066 386 488 Virginia Polytechnic Institut
7046 276 590 UUNET Technologies, Inc.
18566 268 272 Covad Communications
6197 267 382 BellSouth Network Solutions,
6198 241 310 BellSouth Network Solutions,
3301 228 385 TeliaNet Sweden
3215 225 294 France Telecom Transpac
4355 220 382 EarthLink, Inc.
11492 210 215 Cable One
1580 198 211 ANOSCEUR
209 193 521 Qwest
5400 189 215 BT Ignite European Backbone
705 185 409 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:550 13:10 15:4 17:7 20:5
24:849 25:1 32:41 38:18 40:7 44:1
55:1 57:14 61:355 62:240 63:1918 64:1273
65:1573 66:1172 67:107 68:159 80:295 81:60
128:66 129:147 130:21 131:55 132:11 133:2
134:130 135:9 136:583 137:100 138:158 139:69
140:151 141:73 142:71 143:48 144:142 145:17
146:251 147:143 148:248 149:78 150:42 151:61
152:297 153:38 154:9 155:105 156:102 157:111
158:65 159:136 160:23 161:72 162:123 163:88
164:261 165:126 166:106 167:269 168:284 169:57
170:177 171:3 192:5384 193:2407 194:2019 195:812
196:427 198:3601 199:3081 200:2613 202:3394 203:4774
204:3297 205:2153 206:2419 207:2485 208:2614 209:2590
210:607 211:245 212:889 213:716 214:7 215:19
216:2916 217:502 218:44 219:2
End of report
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This report has been generated at Mon Sep 16 18:33:13 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.
Check http://bgp.potaroo.net/cidr for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
09-09-02 121168 88703
10-09-02 121129 88787
11-09-02 121290 88946
12-09-02 121145 87146
13-09-02 121338 87745
14-09-02 121318 87720
15-09-02 121238 87859
16-09-02 122134 87830
Possible Bogus Routes
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
13914 Number of ASes in routing system
5301 Number of ASes announcing only one prefix
1804 Largest number of prefixes announced by an AS
AS209 : ASN-QWEST Qwest
73154816 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as
to preserve traffic transit policies. Aggregation is not
proposed across non-advertised address space ('holes').
--- 16Sep02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121976 88656 33320 27.3% All ASes
AS209 1804 1042 762 42.2% ASN-QWEST Qwest
AS3908 1133 650 483 42.6% SUPERNETASBLK SuperNet, Inc.
AS2548 1581 1127 454 28.7% ICIX-MD-AS Business Internet,
Inc.
AS7132 601 183 418 69.6% SBIS-AS Southwestern Bell
Internet Services
AS701 1762 1351 411 23.3% ALTERNET-AS UUNET
Technologies, Inc.
AS7018 1349 959 390 28.9% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1301 939 362 27.8% ASN-TELSTRA Telstra Pty Ltd
AS4323 645 307 338 52.4% TW-COMM Time Warner
Communications, Inc.
AS7046 607 312 295 48.6% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS6197 383 97 286 74.7% BATI-ATL BellSouth Network
Solutions, Inc
AS852 737 456 281 38.1% ASN852 Telus Advanced
Communications
AS7843 664 386 278 41.9% ADELPHIA-AS Adelphia Corp.
AS18566 270 4 266 98.5% COVAD Covad Communications
AS4151 284 32 252 88.7% USDA-1 USDA
AS1 682 449 233 34.2% GNTY-1 Genuity
AS6347 396 180 216 54.5% DIAMOND SAVVIS Communications
Corporation
AS4814 233 34 199 85.4% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS690 519 326 193 37.2% NSFNET-T3-RT-AS Merit Network
Inc.
AS4355 360 170 190 52.8% ERMS-EARTHLNK EARTHLINK, INC
AS1239 851 662 189 22.2% SprintLink Sprint
AS2386 418 233 185 44.3% INS-AS AT&T Data
Communications Services
AS4134 302 118 184 60.9% ERX-CHINALINK Data
Communications Bureau
AS6595 244 74 170 69.7% DODDSEUR DoD Education
Activity Network Assistance
Center
AS3356 392 226 166 42.3% LEVEL3 Level 3 Communications,
LLC
AS1791 186 23 163 87.6% SPRINTLINK3 Sprint Government
Systems Division
AS11371 169 7 162 95.9% UUNET-AS-11371 UUNET
Technologies, Inc.
AS376 341 184 157 46.0% RISQ-AS Reseau
Interordinateurs Scientique
Quebecois (RISQ)
AS17676 220 65 155 70.5% GIGAINFRA APNIC ASN block
AS6539 350 200 150 42.9% GROUPTLCOM GT Group Telecom
Services Corp.
AS577 424 275 149 35.1% BACOM Bell Advanced
Communications Inc.
Total 19208 11071 8137 42.4% Top 30 total
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)lists.apnic.net
routing-wg(a)ripe.net
afnog(a)afnog.org
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This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 20:00 +10GMT Fri 20 Sep, 2002
Analysis Summary
----------------
BGP routing table entries examined: 114692
Prefixes after maximum aggregation: 74114
Unique aggregates announced to Internet: 55245
Total ASes present in the Internet Routing Table: 13774
Origin-only ASes present in the Internet Routing Table: 11914
Origin ASes announcing only one prefix: 5352
Transit ASes present in the Internet Routing Table: 1860
Transit-only ASes present in the Internet Routing Table: 62
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 23
Illegal AS announcements present in the Routing Table: 12
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 36
Number of addresses announced to Internet: 1189119916
Equivalent to 70 /8s, 224 /16s and 135 /24s
Percentage of available address space announced: 32.1
Percentage of allocated address space announced: 58.8
Percentage of available address space allocated: 54.6
Total number of prefixes smaller than registry allocations: 47095
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18750
Total APNIC prefixes after maximum aggregation: 11397
Prefixes being announced from the APNIC address blocks: 17261
Unique aggregates announced from the APNIC address blocks: 10929
APNIC Region origin ASes present in the Internet Routing Table: 1617
APNIC Region origin ASes announcing only one prefix: 531
APNIC Region transit ASes present in the Internet Routing Table: 279
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 12
Number of APNIC addresses announced to Internet: 97317856
Equivalent to 5 /8s, 204 /16s and 243 /24s
Percentage of available APNIC address space announced: 64.0
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 71523
Total ARIN prefixes after maximum aggregation: 45806
Prefixes being announced from the ARIN address blocks: 50330
Unique aggregates announced from the ARIN address blocks: 15470
ARIN Region origin ASes present in the Internet Routing Table: 7743
ARIN Region origin ASes announcing only one prefix: 2547
ARIN Region transit ASes present in the Internet Routing Table: 743
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 181080384
Equivalent to 10 /8s, 203 /16s and 17 /24s
Percentage of available ARIN address space announced: 67.5
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 19553
Total RIPE prefixes after maximum aggregation: 14816
Prefixes being announced from the RIPE address blocks: 16175
Unique aggregates announced from the RIPE address blocks: 10715
RIPE Region origin ASes present in the Internet Routing Table: 4039
RIPE Region origin ASes announcing only one prefix: 2190
RIPE Region transit ASes present in the Internet Routing Table: 755
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 113790080
Equivalent to 6 /8s, 200 /16s and 76 /24s
Percentage of available RIPE address space announced: 75.4
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 4858
Total LACNIC prefixes after maximum aggregation: 2095
Prefixes being announced from the LACNIC address blocks: 4207
Unique aggregates announced from the LACNIC address blocks: 2631
LACNIC Region origin ASes present in the Internet Routing Table: 315
LACNIC Region origin ASes announcing only one prefix: 84
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 6.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 11206656
Equivalent to 0 /8s, 171 /16s and 0 /24s
Percentage of available LACNIC address space announced: 66.8
LACNIC AS Blocks 26592 - 26623
LACNIC Address Blocks 200/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1196 1187 881 Telstra Pty Ltd
703 392 367 307 UUNET
2907 361 1832 340 SINET Japan
2764 348 357 321 connect.com.au pty ltd
7474 306 275 206 Optus Communications Pty Ltd
4134 292 2268 96 Data Communications Bureau
17557 283 21 111 Pakistan Telecom
4755 260 142 75 Videsh Sanchar Nigam Ltd. Aut
4766 248 1792 156 Korea Internet Exchange for "
4814 221 79 15 China Telecom (Group)
17676 220 3442 29 XTAGE CORPORATION
9443 184 57 70 Primus Telecommunications
9583 175 32 5 Satyam Infoway Ltd.,
9768 145 385 74 Korea Telecom
4515 138 102 79 Star Internet Services Ltd.
7657 128 22 89 The Internet Group Limited
9800 122 188 24 CHINA UNICOM
4739 117 56 108 Commerical Internet eXchange
4713 116 1049 105 NTT Communications Corporatio
9498 102 8 23 BHARTI BT INTERNET LTD.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1798 9246 1295 UUNET Technologies, Inc.
7018 1318 7193 934 AT&T
3908 1045 1652 507 Supernet, Inc.
1239 853 3194 656 Sprint
852 743 1160 455 Telus Advanced Communications
7843 665 372 250 Adelphia Corp.
1 656 8088 433 GENUITY
7132 601 654 141 Southwestern Bell Internet Se
7046 590 863 313 UUNET Technologies, Inc.
4323 527 435 165 Time Warner Communications, I
690 519 75 326 Merit Network
209 514 2066 347 Qwest
7066 490 204 258 Virginia Polytechnic Institut
2548 444 1118 272 Business Internet, Inc.
3549 417 727 300 Global Crossing
6197 381 597 39 BellSouth Network Solutions,
4355 363 289 87 EarthLink, Inc.
15290 363 230 180 AT&T Canada IES
2914 362 2026 357 Verio, Inc.
6347 346 371 78 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 878 2414 732 UUNET - Commercial IP service
3301 387 907 343 TeliaNet Sweden
3215 292 673 179 France Telecom Transpac
3320 249 1965 215 Deutsche Telekom AG
680 238 2151 234 DFN-IP service G-WiN
5515 215 783 178 Sonera Solution Autonomous Sy
5400 214 86 101 BT Ignite European Backbone
1257 202 444 199 SWIPnet Swedish IP Network
719 189 306 130 LANLINK autonomous system
786 177 1873 177 The JANET IP Service
8708 147 41 142 Romania Data Systems S.A.
3303 143 532 142 Swisscom Ltd
2856 125 785 115 BTnet UK Regional network
12302 124 18 31 MobiFon S.A.
3246 123 373 116 Song Networks
5511 110 192 88 France Telecom
3233 108 10 9 RNC - Romanian Natioanal R&D
3269 104 658 63 TELECOM ITALIA
8220 104 167 98 COLT Internet - International
2874 103 85 40 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 189 305 106 UniNet S.A. de C.V.
7303 171 27 49 Telecom Argentina Stet-France
11172 167 88 34 Servicios Alestra S.A de C.V
6503 161 191 116 AVANTEL, S.A.
11340 147 4 48 Red Universitaria Nacional
10834 145 91 34 ADVANCE TELECOMUNICACIONES S.
16814 107 7 13 NSS, S.A.
13999 103 19 8 Mega Cable S.A. de C.V.
6140 95 52 23 ImpSat USA, Inc.
10620 93 6 29 TVCABLE BOGOTA
15034 76 6 31 TIBA SA
1916 72 409 40 Fundacao de Amparo a Pesquisa
11992 72 7 29 Integrated Systems
2277 69 16 3 ECUANET - CORPORACION ECUATOR
7984 69 27 43 Global One Colombia
4270 68 18 10 Red de Interconexion Universi
15311 68 24 31 Telefonica Empresas
4926 65 4 53 Telintar S.A.
8065 59 6 16 Empresas Publicas de Medellin
7993 58 9 30 Global One Chile
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3908 1045 538 Supernet, Inc.
7132 601 460 Southwestern Bell Internet Se
7843 665 415 Adelphia Corp.
7018 1318 384 AT&T
4323 527 362 Time Warner Communications, I
6197 381 342 BellSouth Network Solutions,
1221 1196 315 Telstra Pty Ltd
852 743 288 Telus Advanced Communications
7046 590 277 UUNET Technologies, Inc.
4355 363 276 EarthLink, Inc.
4151 285 270 USDA
6347 346 268 SAVVIS Communications Corpora
18566 272 268 Covad Communications
376 343 233 Reseau Interordinateurs Scien
7066 490 232 Virginia Polytechnic Institut
1 656 223 GENUITY
4814 221 206 China Telecom (Group)
1580 211 199 ANOSCEUR
11492 209 198 Cable One
1239 853 197 Sprint
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
578 UNALLOCATED 199.243.116.0/22 577 Bell Advanced Commun
64562 PRIVATE 203.152.128.0/21 11919 Loral Orion Services
64562 PRIVATE 203.152.136.0/21 11919 Loral Orion Services
65011 PRIVATE 207.8.204.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.8.227.0/24 4231 You Tools Corporatio
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
578 UNALLOCATED 207.61.186.0/24 577 Bell Advanced Commun
65506 PRIVATE 207.106.30.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.58.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.90.0/24 4231 You Tools Corporatio
65011 PRIVATE 207.106.122.0/24 4231 You Tools Corporatio
578 UNALLOCATED 216.209.156.0/24 577 Bell Advanced Commun
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 GENUITY
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.236.0.0/16 568 DISO-UNRRA
192.31.242.0/24 771 NASA Ames Research Center
192.44.0.0/19 702 UUNET - Commercial IP service
192.58.92.0/24 19548 Adelphia Business Solutions
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.91.198.0/24 2568 CTS Network Services
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.136.136.0/24 7046 UUNET Technologies, Inc.
192.136.136.0/22 568 DISO-UNRRA
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.172.0.0/19 568 DISO-UNRRA
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 7168 Northwest Link
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:6 /10:7 /11:12 /12:36
/13:89 /14:236 /15:428 /16:7268 /17:1485 /18:2685
/19:7843 /20:7498 /21:5258 /22:8059 /23:9726 /24:63159
/25:204 /26:243 /27:137 /28:83 /29:48 /30:111
/31:0 /32:53
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 615 1045 Supernet, Inc.
702 538 878 UUNET - Commercial IP service
701 492 1798 UUNET Technologies, Inc.
7843 469 665 Adelphia Corp.
690 465 519 Merit Network
7018 399 1318 AT&T
7066 388 490 Virginia Polytechnic Institut
7046 279 590 UUNET Technologies, Inc.
18566 268 272 Covad Communications
6197 266 381 BellSouth Network Solutions,
6198 243 312 BellSouth Network Solutions,
1239 240 853 Sprint
3301 229 387 TeliaNet Sweden
3215 224 292 France Telecom Transpac
4355 205 363 EarthLink, Inc.
11492 205 209 Cable One
1580 198 211 ANOSCEUR
5400 188 214 BT Ignite European Backbone
209 187 514 Qwest
3320 180 249 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:553 13:10 15:2 17:7 20:4
24:821 25:1 32:41 38:7 40:6 44:1
55:1 57:14 61:337 62:235 63:1844 64:1273
65:1504 66:1181 67:105 68:97 80:281 81:53
128:59 129:157 130:21 131:55 132:11 133:2
134:129 135:9 136:575 137:94 138:157 139:69
140:155 141:70 142:70 143:51 144:141 145:17
146:260 147:142 148:248 149:79 150:42 151:57
152:299 153:37 154:10 155:101 156:102 157:110
158:65 159:137 160:24 161:74 162:116 163:86
164:261 165:125 166:105 167:267 168:126 169:59
170:175 171:3 192:5382 193:2358 194:2024 195:800
196:431 198:3560 199:3084 200:2622 202:3376 203:4803
204:3271 205:2143 206:2408 207:2462 208:2559 209:2611
210:606 211:245 212:882 213:735 214:8 215:19
216:2896 217:495 218:46 219:2
End of report
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