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February 2002
- 4 participants
- 8 discussions
Hi ris-users,
my name is Fabrizio Lombardozzi, I've developed a system to monitor
inter-AS routing instabilities (route flaps) at the Computer Networks
Research Group, of the Roma III University, Italy.
The system retrieves BGP data from RIS, and produces interactive graphs
and animations using a graph drawing engine and intuitive morphing
animations, with a reasonably friendly web graphic user interface
(it's an applet).
I will be grateful if you could give me some comments and hopefully
suggestions.
At the url http://www.dia.uniroma3.it/~compunet/
you will find detailed instructions to start the applet and also a gallery
with screenshots and animations.
Thanks in Advance
Fabrizio
2
2
This is an auto-generated mail on Fri Feb 22 23:00:00 PST 2002
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amont of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 22Feb02
0) General Status
Table History
-------------
Date Prefixes
150202 105693
160202 105736
170202 105803
180202 105879
190202 105989
200202 106186
210202 105821
220202 106236
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 96.0.0.0/20 from AS3549
AS Summary
----------
Number of ASes in routing system: 12451
Number of ASes announcing only one prefix: 7566 (4299 cidr, 3267 classful)
Largest number of cidr routes: 728 announced by AS701
Largest number of classful routes: 1369 announced by AS701
1) Gains by aggregating at the origin AS level
--- 22Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1150 886 264 23.0% Telstra Pty Ltd
AS701 1369 1125 244 17.8% UUNET Technologies, Inc.
AS17557 224 96 128 57.1% Pakistan Telecom
AS7018 836 712 124 14.8% AT&T
AS577 320 197 123 38.4% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS4151 254 149 105 41.3% USDA
AS705 309 205 104 33.7% UUNET Technologies, Inc.
AS852 425 324 101 23.8% Telus Advanced Communications
AS6595 150 55 95 63.3% DoD Education Activity Network As
AS7046 324 239 85 26.2% UUNET Technologies, Inc.
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 186 105 81 43.5% State of Louisiana
AS12302 110 31 79 71.8% MobiFon S.A.
AS1239 482 405 77 16.0% Sprint
AS4323 432 356 76 17.6% Time Warner Communications, Inc.
AS4755 221 147 74 33.5% Videsh Sanchar Nigam Ltd. Autonom
AS3908 339 271 68 20.1% Supernet, Inc.
AS3464 157 97 60 38.2% Alabama SuperComputer Network
AS724 215 156 59 27.4% DLA Systems Automation Center
AS7303 106 48 58 54.7% Telecom Argentina Stet-France Tel
AS16758 63 6 57 90.5% IKON Office Solutions
AS226 145 89 56 38.6% Los Nettos
AS19834 63 8 55 87.3% NetForce, Inc.
AS10620 77 22 55 71.4% TVCABLE BOGOTA
AS9051 75 22 53 70.7% INCONET Autonomous System
AS702 621 568 53 8.5% UUNET Technologies, Inc.
AS703 271 219 52 19.2% UUNET Technologies, Inc.
AS2149 305 253 52 17.0% Performance Systems, Inc.
AS209 300 248 52 17.3% Qwest
Total 53958 42075 11883 22.0%
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
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 22 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108511
Prefixes after maximum aggregation: 71931
Unique aggregates announced to Internet: 51754
Total ASes present in the Internet Routing Table: 12591
Origin-only ASes present in the Internet Routing Table: 10899
Origin ASes announcing only one prefix: 4778
Transit ASes present in the Internet Routing Table: 1692
Transit-only ASes present in the Internet Routing Table: 58
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1174523208
Equivalent to 70 /8s, 1 /16s and 205 /24s
Percentage of available address space announced: 31.7
Percentage of allocated address space announced: 60.0
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72403
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17358
Total APNIC prefixes after maximum aggregation: 10557
Prefixes being announced from the APNIC address blocks: 15867
Unique aggregates announced from the APNIC address blocks: 9799
APNIC Region origin ASes present in the Internet Routing Table: 1445
APNIC Region origin ASes announcing only one prefix: 491
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79641920
Equivalent to 4 /8s, 191 /16s and 61 /24s
Percentage of available APNIC address space announced: 58.9
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 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72928
Total ARIN prefixes after maximum aggregation: 47301
Prefixes being announced from the ARIN address blocks: 51446
Unique aggregates announced from the ARIN address blocks: 16297
ARIN Region origin ASes present in the Internet Routing Table: 7449
ARIN Region origin ASes announcing only one prefix: 2322
ARIN Region transit ASes present in the Internet Routing Table: 766
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 194750084
Equivalent to 11 /8s, 155 /16s and 166 /24s
Percentage of available ARIN address space announced: 72.6
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 18225
Total RIPE prefixes after maximum aggregation: 14073
Prefixes being announced from the RIPE address blocks: 14981
Unique aggregates announced from the RIPE address blocks: 9993
RIPE Region origin ASes present in the Internet Routing Table: 3638
RIPE Region origin ASes announcing only one prefix: 1965
RIPE Region transit ASes present in the Internet Routing Table: 660
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106891520
Equivalent to 6 /8s, 95 /16s and 9 /24s
Percentage of available RIPE address space announced: 70.8
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
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1311 1246 963 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 402 359 311 UUNET Technologies, Inc.
2907 399 1942 365 SINET Japan
2764 387 361 362 connect.com.au pty ltd
7474 302 290 206 Optus Communications Pty Ltd
4755 290 111 88 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 253 112 3 CHINA RAILWAY Internet(CRNET)
17557 226 17 95 Pakistan Telecom
4766 213 1392 151 Korea Internet Exchange for "
7539 162 220 155 TANet2, sponsored by NSC, TAI
9443 162 44 60 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 140 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4780 118 186 40 Digital United Inc.
4713 117 914 103 NTT Communications Corporatio
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1063 2631 856 UUNET Technologies, Inc.
3301 398 924 352 TeliaNet Sweden
1257 247 487 243 SWIPnet Swedish IP Network
3215 238 570 155 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 197 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 181 1858 181 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 157 22 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
2118 126 109 20 EUnet/RELCOM Autonomous Syste
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 116 40 65 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
5536 97 13 25 Internet Egypt Network
2874 95 100 35 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2106 8443 1503 UUNET Technologies, Inc.
7018 1237 7511 932 AT&T
3908 834 1661 481 Supernet, Inc.
1 817 8102 596 BBN Planet
1239 805 3348 621 Sprint
4323 658 434 257 Time Warner Communications, I
7046 616 850 416 UUNET Technologies, Inc.
852 614 1127 410 Telus Advanced Communications
209 537 1974 309 Qwest
7132 455 510 164 Southwestern Bell Internet Se
2914 453 2193 421 Verio, Inc.
3549 451 807 234 Global Crossing
690 437 66 283 Merit Network
7843 377 298 47 Adelphia Corp.
705 373 114 263 UUNET Technologies, Inc.
2149 373 209 311 Performance Systems, Inc.
577 353 588 221 Bell Advanced Communications
3561 350 2204 310 Cable & Wireless USA
3741 343 730 234 The Internet Solution
2386 332 354 189 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 658 401 Time Warner Communications, I
3908 834 353 Supernet, Inc.
1221 1311 348 Telstra Pty Ltd
7843 377 330 Adelphia Corp.
7018 1237 305 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 279 272 Rhythms NetConnections
9394 253 250 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
7029 244 229 Alltel Information Services,
209 537 228 Qwest
1 817 221 BBN Planet
3549 451 217 Global Crossing
702 1063 207 UUNET Technologies, Inc.
852 614 204 Telus Advanced Communications
4355 243 204 EarthLink, Inc.
4755 290 202 Videsh Sanchar Nigam Ltd. Aut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
172.16.0.0/12 9367 Tokyo Institute of Technology
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
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 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
189.186.184.0/24 4471 Michigan Internet Cooperative
201.115.100.0/24 7018 AT&T
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 /10:8 /11:12 /12:38
/13:90 /14:233 /15:396 /16:7146 /17:1433 /18:2528
/19:7364 /20:6760 /21:4801 /22:7291 /23:8889 /24:60555
/25:216 /26:260 /27:120 /28:87 /29:91 /30:130
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1351 2106 UUNET Technologies, Inc.
1221 1166 1311 Telstra Pty Ltd
702 687 1063 UUNET Technologies, Inc.
7018 652 1237 AT&T
3908 589 834 Supernet, Inc.
4323 537 658 Time Warner Communications, I
1239 472 805 Sprint
690 433 437 Merit Network
7046 433 616 UUNET Technologies, Inc.
1 420 817 BBN Planet
852 372 614 Telus Advanced Communications
209 355 537 Qwest
2764 343 387 connect.com.au pty ltd
703 324 402 UUNET Technologies, Inc.
705 320 373 UUNET Technologies, Inc.
3549 318 451 Global Crossing
2149 282 373 Performance Systems, Inc.
7066 276 305 Virginia Polytechnic Institut
6197 275 326 BellSouth Network Solutions,
11371 273 279 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:481 13:10 15:1 17:5
20:2 24:771 25:1 32:68 38:9 40:6
44:1 57:14 61:230 62:171 63:1880 64:1128
65:1032 66:721 67:34 68:7 80:204 81:5
128:62 129:123 130:21 131:57 132:11 133:3
134:128 135:10 136:247 137:101 138:148 139:47
140:185 141:62 142:88 143:37 144:152 145:12
146:216 147:156 148:146 149:92 150:39 151:45
152:352 153:32 154:7 155:85 156:75 157:121
158:78 159:89 160:23 161:55 162:139 163:115
164:95 165:120 166:225 167:182 168:119 169:51
170:293 171:2 189:1 192:5436 193:2180 194:2103
195:817 196:443 198:3741 199:3236 200:2318 201:1
202:2906 203:4459 204:3337 205:2174 206:2526 207:2626
208:2570 209:2820 210:528 211:184 212:895 213:567
214:9 215:18 216:2969 217:452 218:10
End of report
1
0
This is an auto-generated mail on Fri Feb 15 23:00:00 PST 2002
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amont of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 15Feb02
0) General Status
Table History
-------------
Date Prefixes
080202 105598
090202 105704
100202 105732
110202 105576
120202 105729
130202 105810
140202 105555
150202 105693
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 96.0.0.0/20 from AS3549
AS Summary
----------
Number of ASes in routing system: 12420
Number of ASes announcing only one prefix: 7568 (4308 cidr, 3260 classful)
Largest number of cidr routes: 722 announced by AS701
Largest number of classful routes: 1371 announced by AS701
1) Gains by aggregating at the origin AS level
--- 15Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1152 889 263 22.8% Telstra Pty Ltd
AS701 1371 1126 245 17.9% UUNET Technologies, Inc.
AS577 324 198 126 38.9% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 821 703 118 14.4% AT&T
AS6595 172 60 112 65.1% DoD Education Activity Network As
AS4151 253 148 105 41.5% USDA
AS705 307 203 104 33.9% UUNET Technologies, Inc.
AS852 427 326 101 23.7% Telus Advanced Communications
AS7046 318 232 86 27.0% UUNET Technologies, Inc.
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 186 105 81 43.5% State of Louisiana
AS12302 111 32 79 71.2% MobiFon S.A.
AS1239 479 403 76 15.9% Sprint
AS4323 416 344 72 17.3% Time Warner Communications, Inc.
AS3908 337 270 67 19.9% Supernet, Inc.
AS4755 192 129 63 32.8% Videsh Sanchar Nigam Ltd. Autonom
AS3464 157 97 60 38.2% Alabama SuperComputer Network
AS703 275 216 59 21.5% UUNET Technologies, Inc.
AS7303 107 49 58 54.2% Telecom Argentina Stet-France Tel
AS724 212 154 58 27.4% DLA Systems Automation Center
AS16758 63 6 57 90.5% IKON Office Solutions
AS226 145 89 56 38.6% Los Nettos
AS19834 63 8 55 87.3% NetForce, Inc.
AS10620 77 22 55 71.4% TVCABLE BOGOTA
AS702 624 570 54 8.7% UUNET Technologies, Inc.
AS209 302 250 52 17.2% Qwest
AS1 478 426 52 10.9% BBN Planet
AS9051 74 23 51 68.9% INCONET Autonomous System
AS2149 304 253 51 16.8% Performance Systems, Inc.
Total 53554 41894 11660 21.8%
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
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 15 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107865
Prefixes after maximum aggregation: 71870
Unique aggregates announced to Internet: 51605
Total ASes present in the Internet Routing Table: 12551
Origin-only ASes present in the Internet Routing Table: 10860
Origin ASes announcing only one prefix: 4759
Transit ASes present in the Internet Routing Table: 1691
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 19
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1172878088
Equivalent to 69 /8s, 232 /16s and 179 /24s
Percentage of available address space announced: 31.6
Percentage of allocated address space announced: 59.9
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71809
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17369
Total APNIC prefixes after maximum aggregation: 10575
Prefixes being announced from the APNIC address blocks: 15870
Unique aggregates announced from the APNIC address blocks: 9270
APNIC Region origin ASes present in the Internet Routing Table: 1446
APNIC Region origin ASes announcing only one prefix: 480
APNIC Region transit ASes present in the Internet Routing Table: 254
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 83565888
Equivalent to 4 /8s, 251 /16s and 29 /24s
Percentage of available APNIC address space announced: 61.8
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 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72603
Total ARIN prefixes after maximum aggregation: 47272
Prefixes being announced from the ARIN address blocks: 51295
Unique aggregates announced from the ARIN address blocks: 17275
ARIN Region origin ASes present in the Internet Routing Table: 7429
ARIN Region origin ASes announcing only one prefix: 2313
ARIN Region transit ASes present in the Internet Routing Table: 768
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 186573124
Equivalent to 11 /8s, 30 /16s and 225 /24s
Percentage of available ARIN address space announced: 69.5
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 17893
Total RIPE prefixes after maximum aggregation: 14023
Prefixes being announced from the RIPE address blocks: 14698
Unique aggregates announced from the RIPE address blocks: 9419
RIPE Region origin ASes present in the Internet Routing Table: 3620
RIPE Region origin ASes announcing only one prefix: 1966
RIPE Region transit ASes present in the Internet Routing Table: 655
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 110064128
Equivalent to 6 /8s, 143 /16s and 114 /24s
Percentage of available RIPE address space announced: 72.9
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
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1314 1258 959 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 403 359 309 UUNET Technologies, Inc.
2907 399 1942 366 SINET Japan
2764 389 361 364 connect.com.au pty ltd
7474 300 289 203 Optus Communications Pty Ltd
4134 270 1874 98 Data Communications Bureau
4755 265 111 82 Videsh Sanchar Nigam Ltd. Aut
9394 243 112 3 CHINA RAILWAY Internet(CRNET)
4766 205 1393 145 Korea Internet Exchange for "
7539 161 204 155 TANet2, sponsored by NSC, TAI
9443 157 44 58 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 134 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 115 186 40 Digital United Inc.
9800 115 4231 13 CHINA UNICOM
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1073 2617 860 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 256 487 247 SWIPnet Swedish IP Network
3215 242 570 156 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 214 689 172 Sonera Finland Autonomous Sys
5400 200 83 95 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 155 21 144 Romania Data Systems S.A.
2856 130 790 119 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
12302 115 7 36 MobiFon S.A.
8297 114 40 64 Teleglobe Autonomous System i
517 100 226 98 KPNQwest Germany GmbH
5511 94 193 83 France Telecom
1267 91 1471 41 Infostrada S.p.A.
2830 89 210 71 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2105 8429 1502 UUNET Technologies, Inc.
7018 1230 7498 929 AT&T
3908 828 1676 479 Supernet, Inc.
1 827 8103 599 BBN Planet
1239 806 3340 622 Sprint
4323 648 433 243 Time Warner Communications, I
852 615 1125 407 Telus Advanced Communications
7046 612 849 413 UUNET Technologies, Inc.
209 535 1908 305 Qwest
7132 456 510 164 Southwestern Bell Internet Se
2914 452 2193 420 Verio, Inc.
3549 438 821 224 Global Crossing
690 437 66 283 Merit Network
705 383 114 271 UUNET Technologies, Inc.
2149 374 209 313 Performance Systems, Inc.
3561 365 2220 320 Cable & Wireless USA
577 353 588 219 Bell Advanced Communications
7843 349 290 50 Adelphia Corp.
3741 344 730 235 The Internet Solution
2386 333 355 191 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 648 405 Time Warner Communications, I
1221 1314 355 Telstra Pty Ltd
3908 828 349 Supernet, Inc.
7018 1230 301 AT&T
7843 349 299 Adelphia Corp.
7132 456 292 Southwestern Bell Internet Se
4151 304 288 USDA
11371 278 271 Rhythms NetConnections
9394 243 240 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 535 230 Qwest
1 827 228 BBN Planet
3549 438 214 Global Crossing
702 1073 213 UUNET Technologies, Inc.
852 615 208 Telus Advanced Communications
4355 244 205 EarthLink, Inc.
6198 301 204 BellSouth Network Solutions,
1580 211 200 HQ, 5th Signal Command
7046 612 199 UUNET Technologies, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
96.0.0.0/20 3549 Global Crossing
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 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:394 /16:7146 /17:1430 /18:2506
/19:7380 /20:6738 /21:4794 /22:7273 /23:8918 /24:59954
/25:220 /26:251 /27:121 /28:85 /29:85 /30:125
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1354 2105 UUNET Technologies, Inc.
1221 1168 1314 Telstra Pty Ltd
702 698 1073 UUNET Technologies, Inc.
7018 644 1230 AT&T
3908 582 828 Supernet, Inc.
4323 529 648 Time Warner Communications, I
1239 476 806 Sprint
7046 437 612 UUNET Technologies, Inc.
690 433 437 Merit Network
1 426 827 BBN Planet
852 374 615 Telus Advanced Communications
209 356 535 Qwest
2764 345 389 connect.com.au pty ltd
705 330 383 UUNET Technologies, Inc.
703 327 403 UUNET Technologies, Inc.
3549 306 438 Global Crossing
2149 283 374 Performance Systems, Inc.
6197 275 328 BellSouth Network Solutions,
7066 275 304 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:482 13:10 15:1 17:5
20:5 24:750 25:1 32:68 38:9 40:6
44:1 57:14 61:227 62:170 63:1886 64:1109
65:1031 66:695 67:33 68:5 80:188 81:4
128:63 129:120 130:21 131:57 132:11 133:3
134:128 135:10 136:245 137:106 138:148 139:47
140:162 141:61 142:67 143:37 144:155 145:12
146:217 147:154 148:146 149:91 150:40 151:45
152:302 153:32 154:7 155:83 156:77 157:82
158:81 159:88 160:24 161:54 162:102 163:114
164:94 165:124 166:222 167:168 168:114 169:49
170:292 171:2 192:5423 193:2116 194:2010 195:784
196:445 198:3736 199:3239 200:2319 201:1 202:2889
203:4436 204:3312 205:2163 206:2534 207:2619 208:2574
209:2829 210:531 211:158 212:882 213:558 214:9
215:18 216:2962 217:438 218:10
End of report
1
0
This is an auto-generated mail on Fri Feb 8 23:00:00 PST 2002
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amont of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 08Feb02
0) General Status
Table History
-------------
Date Prefixes
010202 105568
020202 105595
030202 105578
040202 105667
050202 105600
060202 105584
070202 105721
080202 105598
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 96.0.0.0/20 from AS3549
AS Summary
----------
Number of ASes in routing system: 12381
Number of ASes announcing only one prefix: 7537 (4280 cidr, 3257 classful)
Largest number of cidr routes: 717 announced by AS701
Largest number of classful routes: 1357 announced by AS701
1) Gains by aggregating at the origin AS level
--- 08Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1156 892 264 22.8% Telstra Pty Ltd
AS701 1357 1126 231 17.0% UUNET Technologies, Inc.
AS577 323 197 126 39.0% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 821 703 118 14.4% AT&T
AS4151 261 149 112 42.9% USDA
AS6595 168 60 108 64.3% DoD Education Activity Network As
AS17557 195 88 107 54.9% Pakistan Telecom
AS705 293 189 104 35.5% UUNET Technologies, Inc.
AS852 425 325 100 23.5% Telus Advanced Communications
AS7046 329 230 99 30.1% UUNET Technologies, Inc.
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 185 105 80 43.2% State of Louisiana
AS12302 110 31 79 71.8% MobiFon S.A.
AS1239 475 398 77 16.2% Sprint
AS4755 221 150 71 32.1% Videsh Sanchar Nigam Ltd. Autonom
AS4323 406 340 66 16.3% Time Warner Communications, Inc.
AS703 279 217 62 22.2% UUNET Technologies, Inc.
AS3464 157 97 60 38.2% Alabama SuperComputer Network
AS7303 107 49 58 54.2% Telecom Argentina Stet-France Tel
AS724 209 151 58 27.8% DLA Systems Automation Center
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 320 264 56 17.5% Supernet, Inc.
AS226 145 89 56 38.6% Los Nettos
AS13999 70 14 56 80.0% Mega Cable S.A. de C.V.
AS19834 63 8 55 87.3% NetForce, Inc.
AS702 654 600 54 8.3% UUNET Technologies, Inc.
AS1 491 438 53 10.8% BBN Planet
AS2149 308 256 52 16.9% Performance Systems, Inc.
AS9051 73 22 51 69.9% INCONET Autonomous System
Total 53855 42131 11724 21.8%
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
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 08 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107908
Prefixes after maximum aggregation: 71978
Unique aggregates announced to Internet: 52602
Total ASes present in the Internet Routing Table: 12515
Origin-only ASes present in the Internet Routing Table: 10824
Origin ASes announcing only one prefix: 4729
Transit ASes present in the Internet Routing Table: 1691
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 20
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1164266760
Equivalent to 69 /8s, 101 /16s and 77 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71887
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17523
Total APNIC prefixes after maximum aggregation: 10668
Prefixes being announced from the APNIC address blocks: 16019
Unique aggregates announced from the APNIC address blocks: 9821
APNIC Region origin ASes present in the Internet Routing Table: 1450
APNIC Region origin ASes announcing only one prefix: 481
APNIC Region transit ASes present in the Internet Routing Table: 253
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79436352
Equivalent to 4 /8s, 188 /16s and 26 /24s
Percentage of available APNIC address space announced: 58.7
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 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72415
Total ARIN prefixes after maximum aggregation: 47252
Prefixes being announced from the ARIN address blocks: 51059
Unique aggregates announced from the ARIN address blocks: 17199
ARIN Region origin ASes present in the Internet Routing Table: 7401
ARIN Region origin ASes announcing only one prefix: 2294
ARIN Region transit ASes present in the Internet Routing Table: 762
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 185726788
Equivalent to 11 /8s, 17 /16s and 247 /24s
Percentage of available ARIN address space announced: 69.2
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 17970
Total RIPE prefixes after maximum aggregation: 14058
Prefixes being announced from the RIPE address blocks: 14778
Unique aggregates announced from the RIPE address blocks: 9905
RIPE Region origin ASes present in the Internet Routing Table: 3603
RIPE Region origin ASes announcing only one prefix: 1954
RIPE Region transit ASes present in the Internet Routing Table: 657
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106625024
Equivalent to 6 /8s, 90 /16s and 248 /24s
Percentage of available RIPE address space announced: 70.6
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
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1318 1258 963 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 405 363 307 UUNET Technologies, Inc.
2907 395 1893 364 SINET Japan
2764 392 361 369 connect.com.au pty ltd
7474 301 290 204 Optus Communications Pty Ltd
4755 287 111 89 Videsh Sanchar Nigam Ltd. Aut
4134 269 1858 100 Data Communications Bureau
9394 236 112 3 CHINA RAILWAY Internet(CRNET)
4766 206 1393 145 Korea Internet Exchange for "
17557 200 15 90 Pakistan Telecom
7539 162 220 155 TANet2, sponsored by NSC, TAI
9443 161 44 59 Primus Telecommunications
9768 146 385 88 Korea Telecom
9583 139 32 5 Satyam Infoway Ltd.,
4197 130 13 5 Global OnLine Japan K.K.
4740 124 17 104 OzEmail ISP
7657 121 22 84 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 115 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1112 2619 863 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 252 487 248 SWIPnet Swedish IP Network
3215 242 570 156 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 166 289 120 LANLINK autonomous system
8708 159 21 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 122 576 122 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
5603 93 12 59 SiOL Internet d.o.o.
5511 92 192 81 France Telecom
1267 91 1471 41 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2087 8303 1510 UUNET Technologies, Inc.
7018 1233 7510 928 AT&T
1 842 8153 613 BBN Planet
3908 810 1662 470 Supernet, Inc.
1239 795 3216 615 Sprint
4323 635 432 239 Time Warner Communications, I
7046 632 833 417 UUNET Technologies, Inc.
852 616 1141 409 Telus Advanced Communications
209 529 1908 301 Qwest
690 492 72 307 Merit Network
7132 455 508 163 Southwestern Bell Internet Se
2914 453 2195 422 Verio, Inc.
3549 436 821 217 Global Crossing
705 390 116 274 UUNET Technologies, Inc.
2149 390 210 326 Performance Systems, Inc.
3561 369 2237 325 Cable & Wireless USA
577 352 604 219 Bell Advanced Communications
3741 348 731 239 The Internet Solution
2386 329 355 190 AT&T Data Communications Serv
6197 327 227 161 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 635 396 Time Warner Communications, I
1221 1318 355 Telstra Pty Ltd
3908 810 340 Supernet, Inc.
7018 1233 305 AT&T
4151 311 295 USDA
7132 455 292 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1112 249 UUNET Technologies, Inc.
9394 236 233 CHINA RAILWAY Internet(CRNET)
6347 311 232 SAVVIS Communications Corpora
1 842 229 BBN Planet
209 529 228 Qwest
7843 259 221 Adelphia Corp.
3549 436 219 Global Crossing
7046 632 215 UUNET Technologies, Inc.
852 616 207 Telus Advanced Communications
4355 233 204 EarthLink, Inc.
6198 296 202 BellSouth Network Solutions,
1580 211 200 HQ, 5th Signal Command
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
96.0.0.0/20 3549 Global Crossing
126.0.0.0/8 7336 Compass Communications
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 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
201.115.100.0/24 7018 AT&T
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
/13:91 /14:231 /15:392 /16:7137 /17:1421 /18:2498
/19:7344 /20:6700 /21:4791 /22:7265 /23:8915 /24:60015
/25:219 /26:278 /27:128 /28:100 /29:103 /30:162
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1336 2087 UUNET Technologies, Inc.
1221 1172 1318 Telstra Pty Ltd
702 735 1112 UUNET Technologies, Inc.
7018 646 1233 AT&T
3908 565 810 Supernet, Inc.
4323 517 635 Time Warner Communications, I
690 488 492 Merit Network
1239 471 795 Sprint
7046 460 632 UUNET Technologies, Inc.
1 435 842 BBN Planet
852 375 616 Telus Advanced Communications
209 351 529 Qwest
2764 348 392 connect.com.au pty ltd
705 336 390 UUNET Technologies, Inc.
703 327 405 UUNET Technologies, Inc.
3549 305 436 Global Crossing
2149 297 390 Performance Systems, Inc.
7066 275 304 Virginia Polytechnic Institut
6197 274 327 BellSouth Network Solutions,
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:466 13:10 15:1 17:5
20:8 24:664 25:1 32:68 38:9 40:6
44:1 57:14 61:218 62:163 63:1874 64:1099
65:1028 66:668 67:32 68:5 80:179 81:4
128:65 129:119 130:23 131:52 132:11 133:3
134:128 135:10 136:243 137:105 138:148 139:47
140:163 141:61 142:67 143:39 144:154 145:12
146:216 147:148 148:144 149:86 150:40 151:43
152:328 153:32 154:8 155:81 156:77 157:120
158:80 159:88 160:24 161:55 162:101 163:117
164:95 165:126 166:222 167:167 168:114 169:48
170:291 171:3 192:5445 193:2232 194:2031 195:790
196:444 198:3736 199:3261 200:2315 201:1 202:2923
203:4507 204:3281 205:2157 206:2515 207:2628 208:2566
209:2850 210:525 211:146 212:865 213:553 214:9
215:19 216:2938 217:439 218:10
End of report
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This is an auto-generated mail on Fri Feb 1 23:00:00 PST 2002
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amont of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 01Feb02
0) General Status
Table History
-------------
Date Prefixes
250102 104855
260102 104659
270102 104702
280102 104727
290102 104793
300102 105544
310102 105664
010202 105568
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
----------
Number of ASes in routing system: 12323
Number of ASes announcing only one prefix: 7490 (4238 cidr, 3252 classful)
Largest number of cidr routes: 705 announced by AS701
Largest number of classful routes: 1364 announced by AS701
1) Gains by aggregating at the origin AS level
--- 01Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1171 901 270 23.1% Telstra Pty Ltd
AS701 1364 1130 234 17.2% UUNET Technologies, Inc.
AS4151 287 156 131 45.6% USDA
AS577 318 194 124 39.0% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 818 700 118 14.4% AT&T
AS6595 172 61 111 64.5% DoD Education Activity Network As
AS17557 196 85 111 56.6% Pakistan Telecom
AS705 286 183 103 36.0% UUNET Technologies, Inc.
AS7046 327 226 101 30.9% UUNET Technologies, Inc.
AS852 384 288 96 25.0% Telus Advanced Communications
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 185 105 80 43.2% State of Louisiana
AS12302 112 33 79 70.5% MobiFon S.A.
AS1239 469 393 76 16.2% Sprint
AS4755 222 151 71 32.0% Videsh Sanchar Nigam Ltd. Autonom
AS703 275 213 62 22.5% UUNET Technologies, Inc.
AS3464 159 97 62 39.0% Alabama SuperComputer Network
AS4200 118 57 61 51.7% Apex Global Information Services,
AS7303 107 49 58 54.2% Telecom Argentina Stet-France Tel
AS724 210 153 57 27.1% DLA Systems Automation Center
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 329 273 56 17.0% Supernet, Inc.
AS226 145 89 56 38.6% Los Nettos
AS13999 70 14 56 80.0% Mega Cable S.A. de C.V.
AS702 654 599 55 8.4% UUNET Technologies, Inc.
AS19834 63 8 55 87.3% NetForce, Inc.
AS4323 384 330 54 14.1% Time Warner Communications, Inc.
AS2149 310 257 53 17.1% Performance Systems, Inc.
AS1 487 436 51 10.5% BBN Planet
Total 53887 42128 11759 21.8%
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
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