- routing-wg - mailman.ripe.net

The Cidr Report
by CIDR Report 02 Nov '01

02 Nov '01

This is an auto-generated mail on Fri Nov 2 23:00:01 PST 2001 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 02Nov01 0) General Status Table History ------------- Date Prefixes 271001 104354 281001 104082 281001 104104 291001 104430 301001 103922 311001 103786 011101 103634 021101 103427 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 219.0.0.0/16 from AS17676 *** Bogus 219.1.0.0/23 from AS17676 *** Bogus 219.1.0.0/16 from AS17676 *** Bogus 219.2.0.0/16 from AS17676 *** Bogus 219.3.0.0/16 from AS17676 *** Bogus 219.4.0.0/16 from AS17676 *** Bogus 219.5.0.0/16 from AS17676 *** Bogus 219.6.0.0/23 from AS17676 *** Bogus 219.6.0.0/16 from AS17676 *** Bogus 219.7.0.0/16 from AS17676 *** Bogus 219.8.0.0/16 from AS17676 *** Bogus 219.9.0.0/16 from AS17676 *** Bogus 219.10.0.0/16 from AS17676 *** Bogus 219.11.0.0/16 from AS17676 *** Bogus 219.12.0.0/16 from AS17676 *** Bogus 219.13.0.0/16 from AS17676 *** Bogus 219.14.0.0/16 from AS17676 *** Bogus 219.15.0.0/16 from AS17676 *** Bogus 219.16.0.0/16 from AS17676 *** Bogus 219.17.0.0/16 from AS17676 *** Bogus 219.18.0.0/16 from AS17676 *** Bogus 219.19.0.0/16 from AS17676 *** Bogus 219.20.0.0/16 from AS17676 *** Bogus 219.21.0.0/16 from AS17676 *** Bogus 219.22.0.0/16 from AS17676 *** Bogus 219.23.0.0/16 from AS17676 *** Bogus 219.24.0.0/16 from AS17676 *** Bogus 219.25.0.0/16 from AS17676 *** Bogus 219.26.0.0/16 from AS17676 *** Bogus 219.27.0.0/16 from AS17676 *** Bogus 219.28.0.0/16 from AS17676 *** Bogus 219.29.0.0/16 from AS17676 *** Bogus 219.30.0.0/16 from AS17676 *** Bogus 219.31.0.0/16 from AS17676 *** Bogus 219.32.0.0/16 from AS17676 *** Bogus 219.33.0.0/16 from AS17676 *** Bogus 219.34.0.0/16 from AS17676 *** Bogus 219.35.0.0/16 from AS17676 *** Bogus 219.36.0.0/16 from AS17676 *** Bogus 219.37.0.0/16 from AS17676 *** Bogus 219.38.0.0/16 from AS17676 *** Bogus 219.39.0.0/16 from AS17676 *** Bogus 219.40.0.0/16 from AS17676 *** Bogus 219.41.0.0/16 from AS17676 *** Bogus 219.42.0.0/16 from AS17676 *** Bogus 219.43.0.0/16 from AS17676 *** Bogus 219.44.0.0/16 from AS17676 *** Bogus 219.45.0.0/16 from AS17676 *** Bogus 219.46.0.0/16 from AS17676 *** Bogus 219.47.0.0/16 from AS17676 *** Bogus 219.48.0.0/16 from AS17676 *** Bogus 219.49.0.0/16 from AS17676 *** Bogus 219.50.0.0/16 from AS17676 *** Bogus 219.51.0.0/16 from AS17676 *** Bogus 219.52.0.0/16 from AS17676 *** Bogus 219.53.0.0/16 from AS17676 *** Bogus 219.54.0.0/16 from AS17676 *** Bogus 219.55.0.0/16 from AS17676 *** Bogus 219.56.0.0/16 from AS17676 *** Bogus 219.57.0.0/16 from AS17676 *** Bogus 219.58.0.0/16 from AS17676 *** Bogus 219.59.0.0/16 from AS17676 *** Bogus 219.60.0.0/16 from AS17676 *** Bogus 219.61.0.0/16 from AS17676 *** Bogus 219.62.0.0/16 from AS17676 *** Bogus 219.63.0.0/16 from AS17676 AS Summary ---------- Number of ASes in routing system: 8829 Number of ASes announcing only one prefix: 4020 (4020 cidr, 0 classful) Largest number of cidr routes: 818 announced by AS701 Largest number of classful routes: 0 announced by 1) Gains by aggregating at the origin AS level --- 02Nov01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1214 934 280 23.1% Telstra Pty Ltd AS701 1368 1157 211 15.4% UUNET Technologies, Inc. AS4151 318 180 138 43.4% USDA AS16473 202 77 125 61.9% Bell South AS7018 807 688 119 14.7% AT&T AS577 297 183 114 38.4% Bell Advanced Communications Inc. AS6595 171 61 110 64.3% DoD Education Activity Network As AS4293 361 257 104 28.8% Cable & Wireless USA AS705 270 170 100 37.0% UUNET Technologies, Inc. AS2048 215 117 98 45.6% State of Louisiana AS271 157 70 87 55.4% University of British Columbia AS13999 110 23 87 79.1% Mega Cable S.A. de C.V. AS4755 217 134 83 38.2% Videsh Sanchar Nigam Ltd. Autonom AS1239 478 404 74 15.5% Sprint AS17557 141 69 72 51.1% Pakistan Telecom AS12302 106 36 70 66.0% MobiFon S.A. AS6471 132 66 66 50.0% ENTEL CHILE S.A. AS4200 131 66 65 49.6% Apex Global Information Services, AS19632 72 7 65 90.3% Metropolis Intercom S.A. AS3464 160 96 64 40.0% Alabama SuperComputer Network AS7046 316 253 63 19.9% UUNET Technologies, Inc. AS4323 296 237 59 19.9% Time Warner Communications, Inc. AS724 200 142 58 29.0% DLA Systems Automation Center AS209 307 250 57 18.6% Qwest AS16758 63 6 57 90.5% IKON Office Solutions AS703 270 218 52 19.3% UUNET Technologies, Inc. AS3908 297 246 51 17.2% Supernet, Inc. AS17561 110 59 51 46.4% Internet service provision to Wes AS376 122 73 49 40.2% Reseau Interordinateurs Scientiqu AS16814 64 17 47 73.4% NSS, S.A. 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

RE: Strange information in different routing regestries?
by Wilfried Woeber, UniVie/ACOnet 02 Nov '01

02 Nov '01

>Subj: Strange information in different routing regestries? Well, "strange" ... ? Some organisations decided to run Routing Registries in order to support their mission and/or their own operational environment. In general, there is no mechanism to synchronise duplicate or multiple parallel entries when an update is made to _one_ of the registries. It is up to the user/maintainer of a certain block of addresses (or his or her up-stream ISP(s)) to (manually) keep those entries up-to-date or to get them removed - whatever is appropriate. >Is this normal? I wouldn't dare to classify what you c/should regard as normal" :-) Cheers, _________________________________:_____________________________________ Wilfried Woeber : e-mail: Woeber(a)CC.UniVie.ac.at UniVie Computer Center - ACOnet : Tel: +43 1 4277 - 140 33 Universitaetsstrasse 7 : Fax: +43 1 4277 - 9 140 A-1010 Vienna, Austria, Europe : RIPE-DB: WW144, PGP keyID 0xF0ACB369 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

5 4

Weekly Routing Table Report
by Routing Table Analysis 01 Nov '01

01 Nov '01

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 02 Nov, 2001 Analysis Summary ---------------- BGP routing table entries examined: 107928 Origin ASes present in the Internet Routing Table: 11854 Origin ASes announcing only one prefix: 4404 Transit ASes present in the Internet Routing Table: 1572 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 138 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: 1308006313 Equivalent to 77 /8s, 246 /16s and 151 /24s Percentage of available address space announced: 35.3 Percentage of allocated address space announced: 67.4 Percentage of available address space allocated: 52.4 Total number of prefixes smaller than registry allocations: 73128 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 16788 Prefixes being announced from the APNIC address blocks: 15282 APNIC Region origin ASes present in the Internet Routing Table: 1383 APNIC Region origin ASes announcing only one prefix: 450 APNIC Region transit ASes present in the Internet Routing Table: 238 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 17 Number of APNIC addresses announced to Internet: 88033909 Equivalent to 5 /8s, 63 /16s and 74 /24s Percentage of available APNIC address space announced: 74.3 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73139 Prefixes being announced from the ARIN address blocks: 52163 ARIN Region origin ASes present in the Internet Routing Table: 7108 ARIN Region origin ASes announcing only one prefix: 2141 ARIN Region transit ASes present in the Internet Routing Table: 739 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 235950737 Equivalent to 14 /8s, 16 /16s and 82 /24s Percentage of available ARIN address space announced: 87.9 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: 17999 Prefixes being announced from the RIPE address blocks: 14426 RIPE Region origin ASes present in the Internet Routing Table: 3413 RIPE Region origin ASes announcing only one prefix: 1813 RIPE Region transit ASes present in the Internet Routing Table: 599 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 142851711 Equivalent to 8 /8s, 131 /16s and 190 /24s Percentage of available RIPE address space announced: 94.6 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 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 Description 1221 1551 1304 Telstra Pty Ltd 2764 408 359 connect.com.au pty ltd 703 382 362 UUNET Technologies, Inc. 2907 374 1865 SINET Japan 4755 300 162 Videsh Sanchar Nigam Ltd. Aut 7474 295 275 Optus Communications Pty Ltd 4134 253 1902 Data Communications Bureau 4766 182 1415 Korea Internet Exchange for " 4740 167 26 OzEmail ISP 9443 163 53 Primus Telecommunications 17676 162 1957 XTAGE CORPORATION 1659 159 1221 Taiwan Academic Network (TANe 7539 153 159 TANet2, sponsored by NSC, TAI 17557 145 9 Pakistan Telecom 2521 138 171 PSINet Japan 4812 137 305 China Telecom (Group) 9768 128 362 Korea Telecom 9583 126 61 Satyam Infoway Ltd., 4786 123 14 NetConnect Communications Pty 4763 121 69 Telstra New Zealand RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 702 942 1945 UUNET Technologies, Inc. 3301 434 950 TeliaNet Sweden 1257 272 516 SWIPnet Swedish IP Network 680 239 2308 DFN-IP service G-WiN 3215 234 539 France Telecom / &Equant 5515 195 688 Sonera Finland Autonomous Sys 3320 193 1957 Deutsche Telekom AG 786 184 1890 The JANET IP Service 8708 161 16 Romania Data Systems S.A. 5495 156 3 University Network 5400 139 66 Concert European Core Network 15870 139 10 Global Center Frankfurt 719 133 289 LANLINK autonomous system 3303 131 560 Swisscom Ltd 2856 130 776 BTnet UK Regional network 5549 124 82 Nextra Deutschland GmbH + Co. 1270 119 705 UUNET Germany 517 111 251 KPNQwest Germany GmbH 12302 110 7 MobiFon S.A. 15878 110 9 Global Center Paris ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 701 2278 9038 UUNET Technologies, Inc. 3908 1181 1694 Supernet, Inc. 7018 1096 7324 AT&T 1 846 8555 BBN Planet 7046 838 1022 UUNET Technologies, Inc. 1239 709 3380 Sprint 3967 667 453 Exodus Communication 209 578 2196 Qwest 690 507 73 Merit Network 2914 477 2269 Verio, Inc. 4293 451 113 Cable & Wireless USA 2149 426 330 Performance Systems, Inc. 4323 426 386 Time Warner Communications, I 3561 380 2298 Cable & Wireless USA 4151 362 1254 USDA 705 359 68 UUNET Technologies, Inc. 3741 351 766 The Internet Solution 577 349 636 Bell Advanced Communications 15290 342 339 AT&T Canada IES 7132 334 466 Southwestern Bell Internet Se Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv Description 701 2278 9038 UUNET Technologies, Inc. 1221 1551 1304 Telstra Pty Ltd 3908 1181 1694 Supernet, Inc. 7018 1096 7324 AT&T 702 942 1945 UUNET Technologies, Inc. 1 846 8555 BBN Planet 7046 838 1022 UUNET Technologies, Inc. 1239 709 3380 Sprint 3967 667 453 Exodus Communication 209 578 2196 Qwest 690 507 73 Merit Network 2914 477 2269 Verio, Inc. 4293 451 113 Cable & Wireless USA 3301 434 950 TeliaNet Sweden 2149 426 330 Performance Systems, Inc. 4323 426 386 Time Warner Communications, I 2764 408 359 connect.com.au pty ltd 703 382 362 UUNET Technologies, Inc. 3561 380 2298 Cable & Wireless USA 2907 374 1865 SINET Japan List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 22190 UNALLOCATED 12.24.96.0/24 7018 AT&T 22396 UNALLOCATED 12.148.245.0/24 7018 AT&T 22535 UNALLOCATED 12.150.242.0/24 6388 bellsouth.net, inc. 65175 PRIVATE 24.169.224.0/20 11060 Time Warner Cable N 6971 UNALLOCATED 64.42.0.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.0.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.16.0/20 2914 Verio, Inc. 6971 UNALLOCATED 64.42.32.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.40.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.48.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.56.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.60.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.64.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.72.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.80.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.104.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.108.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.112.0/20 2914 Verio, Inc. 6971 UNALLOCATED 64.87.64.0/19 2516 Kokusai Denshin Denw 22141 UNALLOCATED 64.113.208.0/23 19029 New Edge Networks 22151 UNALLOCATED 65.115.37.0/24 5696 WINSTAR 21963 UNALLOCATED 65.117.88.0/21 3908 Supernet, Inc. 17970 UNALLOCATED 65.197.148.0/22 701 UUNET Technologies, 22557 UNALLOCATED 65.207.0.0/24 701 UUNET Technologies, 22141 UNALLOCATED 65.208.24.0/22 19029 New Edge Networks 22446 UNALLOCATED 65.211.132.0/24 701 UUNET Technologies, 22446 UNALLOCATED 65.211.132.0/23 701 UUNET Technologies, 22293 UNALLOCATED 65.213.118.0/24 701 UUNET Technologies, 22196 UNALLOCATED 66.54.252.0/24 6517 Yipes Communications 22196 UNALLOCATED 66.54.253.0/24 6517 Yipes Communications 22196 UNALLOCATED 66.54.254.0/24 6517 Yipes Communications 22196 UNALLOCATED 66.54.255.0/24 6517 Yipes Communications 6971 UNALLOCATED 66.182.0.0/18 2516 Kokusai Denshin Denw 21225 UNALLOCATED 80.71.32.0/20 15835 Moscow Network Acces 21260 UNALLOCATED 80.87.128.0/20 8426 ClaraNET 21279 UNALLOCATED 80.240.128.0/20 1755 Ebone Transit Core 21307 UNALLOCATED 80.241.224.0/20 15589 Edisontel S.p.A. 21314 UNALLOCATED 80.242.224.0/20 8582 Support Net bv 22373 UNALLOCATED 138.113.0.0/16 701 UUNET Technologies, 2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp. 22149 UNALLOCATED 157.245.0.0/20 7018 AT&T 22466 UNALLOCATED 192.43.219.0/24 174 PSINet Inc. 6971 UNALLOCATED 192.103.229.0/24 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.230.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.232.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.236.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.237.0/24 2516 Kokusai Denshin Denw 22388 UNALLOCATED 192.203.116.0/24 11537 University Corporati 22466 UNALLOCATED 192.231.172.0/24 174 PSINet Inc. 17926 UNALLOCATED 192.245.58.0/23 9740 Cable & Wireless Net 21227 UNALLOCATED 193.109.86.0/24 1257 SWIPnet Swedish IP N 21258 UNALLOCATED 193.109.92.0/24 12968 Crowley Data Poland, 21239 UNALLOCATED 193.109.126.0/24 702 UUNET Technologies, 21312 UNALLOCATED 193.110.16.0/22 6846 UKRPACK.NET 21279 UNALLOCATED 194.6.165.0/24 1755 Ebone Transit Core 21279 UNALLOCATED 194.209.81.0/24 1755 Ebone Transit Core 21279 UNALLOCATED 195.65.102.0/24 1755 Ebone Transit Core 22466 UNALLOCATED 199.43.117.0/24 174 PSINet Inc. 22466 UNALLOCATED 199.85.107.0/24 174 PSINet Inc. 22466 UNALLOCATED 199.164.129.0/24 174 PSINet Inc. 6971 UNALLOCATED 199.164.144.0/24 2914 Verio, Inc. 6971 UNALLOCATED 199.249.223.0/24 2516 Kokusai Denshin Denw 22080 UNALLOCATED 200.81.94.0/23 13591 MetroRED Telecomunic 4845 UNALLOCATED 202.165.143.0/24 3462 Data Communication B 65000 PRIVATE 203.21.200.0/24 1221 Telstra Pty Ltd 17970 UNALLOCATED 203.167.69.0/24 9658 Eastern Telecoms Phi 17970 UNALLOCATED 203.167.125.0/24 9658 Eastern Telecoms Phi 17970 UNALLOCATED 203.167.126.0/24 9658 Eastern Telecoms Phi 6971 UNALLOCATED 204.69.206.0/24 2914 Verio, Inc. 22482 UNALLOCATED 205.139.128.0/24 11855 InterNAP 6971 UNALLOCATED 205.163.58.0/24 2914 Verio, Inc. 6971 UNALLOCATED 206.58.248.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.248.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.252.0/23 2914 Verio, Inc. 6971 UNALLOCATED 206.58.254.0/23 2914 Verio, Inc. 22623 UNALLOCATED 206.208.154.0/24 15290 AT&T Canada IES 6971 UNALLOCATED 207.12.40.0/22 2914 Verio, Inc. 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 22463 UNALLOCATED 207.41.203.0/24 21687 Hudson Valley DataNe 22535 UNALLOCATED 207.203.138.0/24 7018 AT&T 22495 UNALLOCATED 208.0.121.0/24 701 UUNET Technologies, 6971 UNALLOCATED 208.1.124.0/23 2914 Verio, Inc. 6971 UNALLOCATED 208.1.200.0/21 2914 Verio, Inc. 22463 UNALLOCATED 208.3.198.0/23 21687 Hudson Valley DataNe 22463 UNALLOCATED 208.28.232.0/24 21687 Hudson Valley DataNe 22463 UNALLOCATED 208.28.236.0/24 21687 Hudson Valley DataNe 22397 UNALLOCATED 208.236.202.0/24 174 PSINet Inc. 22475 UNALLOCATED 208.253.52.0/23 174 PSINet Inc. 22077 UNALLOCATED 209.2.76.0/22 1785 AppliedTheory Corpor 22367 UNALLOCATED 209.39.42.0/24 2914 Verio, Inc. 17962 UNALLOCATED 211.148.192.0/19 10212 China Guangzhou Guan 21181 UNALLOCATED 213.9.194.0/24 8220 COLT Internet - Inte 21175 UNALLOCATED 213.177.160.0/21 5400 Concert European Cor 22164 UNALLOCATED 216.51.170.0/24 1239 Sprint 22466 UNALLOCATED 216.57.6.0/23 15290 AT&T Canada IES 22466 UNALLOCATED 216.57.12.0/23 15290 AT&T Canada IES 22466 UNALLOCATED 216.57.20.0/22 15290 AT&T Canada IES 22466 UNALLOCATED 216.57.56.0/22 15290 AT&T Canada IES 6971 UNALLOCATED 216.105.192.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.121.224.0/19 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.173.192.0/19 2914 Verio, Inc. 6971 UNALLOCATED 216.174.192.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.192.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.200.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.200.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.174.208.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.232.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.128.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.210.128.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.210.140.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.160.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.176.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.184.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.200.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.216.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.220.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.224.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.232.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.236.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.240.0/20 2914 Verio, Inc. 6971 UNALLOCATED 216.229.96.0/20 2516 Kokusai Denshin Denw 21271 UNALLOCATED 217.64.96.0/20 11300 Lyman Brothers 21271 UNALLOCATED 217.64.97.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.98.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.99.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.100.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.102.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.103.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.106.0/24 11300 Lyman Brothers 21271 UNALLOCATED 217.64.108.0/24 11300 Lyman Brothers 21294 UNALLOCATED 217.156.99.0/24 8338 Global One Romania A 4837 UNALLOCATED 218.30.0.0/22 4134 Data Communications 4815 UNALLOCATED 218.30.4.0/22 4134 Data Communications 4816 UNALLOCATED 218.30.8.0/22 4134 Data Communications 4837 UNALLOCATED 218.30.16.0/24 4134 Data Communications 4815 UNALLOCATED 218.30.17.0/24 4134 Data Communications 4816 UNALLOCATED 218.30.18.0/24 4134 Data Communications 17696 UNALLOCATED 218.40.160.0/19 4713 NTT Communications C Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 400 Headquarters Standard Systems 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. 153.34.0.0/15 701 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 /8:21 /9:5 /10:7 /11:12 /12:36 /13:90 /14:221 /15:390 /16:7068 /17:1322 /18:2407 /19:7033 /20:5956 /21:4763 /22:7095 /23:8973 /24:60808 /25:305 /26:296 /27:285 /28:300 /29:162 /30:193 /31:1 /32:179 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1467 2278 UUNET Technologies, Inc. 1221 1409 1551 Telstra Pty Ltd 3908 896 1181 Supernet, Inc. 7046 664 838 UUNET Technologies, Inc. 702 639 942 UUNET Technologies, Inc. 7018 572 1096 AT&T 690 504 507 Merit Network 3967 495 667 Exodus Communication 4293 436 451 Cable & Wireless USA 209 408 578 Qwest 1 406 846 BBN Planet 1239 402 709 Sprint 4323 365 426 Time Warner Communications, I 2764 363 408 connect.com.au pty ltd 4151 318 362 USDA 703 313 382 UUNET Technologies, Inc. 705 305 359 UUNET Technologies, Inc. 2149 301 426 Performance Systems, Inc. 11371 276 283 Rhythms NetConnections 7066 268 298 Virginia Polytechnic Institut Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:5 9:1 12:417 13:10 15:1 17:5 20:1 24:819 25:1 26:1 32:75 38:13 43:2 44:1 47:2 52:1 53:2 57:12 61:106 62:154 63:1951 64:1121 65:870 66:473 67:2 80:81 128:58 129:113 130:23 131:40 132:13 133:2 134:132 135:8 136:93 137:108 138:153 139:51 140:172 141:60 142:64 143:39 144:146 145:11 146:231 147:129 148:221 149:85 150:42 151:190 152:383 153:51 154:8 155:84 156:94 157:110 158:71 159:70 160:46 161:52 162:73 163:131 164:123 165:121 166:207 167:158 168:121 169:45 170:299 171:2 192:5409 193:2025 194:2050 195:846 196:455 198:3792 199:3482 200:2401 201:1 202:2841 203:4524 204:3347 205:2133 206:2835 207:2578 208:2994 209:3032 210:538 211:169 212:897 213:530 214:9 215:14 216:2914 217:427 218:5 End of report

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Strange information in different routing regestries?
by Zvezdelin Vladov 31 Oct '01

31 Oct '01

route: 212.124.64.0/19 descr: Verestar origin: AS11908 remarks: Verestar notify: maintainer(a)verestar.net mnt-by: VERE changed: support(a)verestar.com 20010711 source: RADB route: 212.124.86.0/24 descr: ANGELSOFT PA descr: From Internet Bulgaria PI origin: AS12829 notify: scc(a)internet-bg.net mnt-by: INTERNETBG-MNT changed: scc(a)internet-bg.net 20001215 source: RIPE route: 212.124.64.0/19 descr: Verestar origin: AS11908 mnt-by: ASN-ATCTELEPORTS changed: tmcneill(a)verestar.net 20010501 source: CW route: 212.124.64.0/19 descr: Verestar origin: AS11908 remarks: Verestar notify: support(a)verestar.com mnt-by: ATCTeleports changed: tmcneill(a)verestar.net 20010222 source: VERIO route: 212.124.64.0/19 descr: Verestar origin: AS11908 remarks: Verestar notify: maintainer(a)verestar.com mnt-by: VERESTAR-MNT changed: support(a)verestar.com 20010427 source: LEVEL3 Is this normal? Looked up at whois.radb.net Zvezdelin Vladov System&Network Manager AngelSoft Bulgaria Ph:+359 32 271209 Fax: +359 32 270934

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The Cidr Report
by CIDR Report 26 Oct '01

26 Oct '01

This is an auto-generated mail on Fri Oct 26 23:00:00 PDT 2001 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 26Oct01 0) General Status Table History ------------- Date Prefixes 191001 104997 201001 104988 211001 104985 221001 105173 231001 105209 241001 104135 251001 103926 261001 104244 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: 8804 Number of ASes announcing only one prefix: 3995 (3995 cidr, 0 classful) Largest number of cidr routes: 846 announced by AS701 Largest number of classful routes: 0 announced by 1) Gains by aggregating at the origin AS level --- 26Oct01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1223 940 283 23.1% Telstra Pty Ltd AS4151 298 164 134 45.0% USDA AS13999 136 9 127 93.4% Mega Cable S.A. de C.V. AS16473 196 75 121 61.7% Bell South AS4293 364 257 107 29.4% Cable & Wireless USA AS2048 215 116 99 46.0% State of Louisiana AS271 158 71 87 55.1% University of British Columbia AS4755 215 133 82 38.1% Videsh Sanchar Nigam Ltd. Autonom AS1239 476 400 76 16.0% Sprint AS12302 106 35 71 67.0% MobiFon S.A. AS17557 138 71 67 48.6% Pakistan Telecom AS4200 131 66 65 49.6% Apex Global Information Services, AS3464 161 96 65 40.4% Alabama SuperComputer Network AS19632 72 7 65 90.3% Metropolis Intercom S.A. AS16758 63 6 57 90.5% IKON Office Solutions AS209 304 249 55 18.1% Qwest AS226 144 91 53 36.8% Los Nettos AS4323 273 221 52 19.0% Time Warner Communications, Inc. AS3908 298 247 51 17.1% Supernet, Inc. AS17561 111 60 51 45.9% Internet service provision to Wes AS376 121 73 48 39.7% Reseau Interordinateurs Scientiqu AS10620 69 21 48 69.6% TVCABLE BOGOTA AS1 517 469 48 9.3% BBN Planet AS16814 65 18 47 72.3% NSS, S.A. AS15288 71 24 47 66.2% Alcanet International NA AS15290 247 201 46 18.6% AT&T Canada IES AS2652 129 85 44 34.1% Government Telecommunications and AS10292 70 27 43 61.4% TELECOMMUNICATIONS OF JAMAICA AS5416 51 9 42 82.4% BATELCO-BH AS5103 76 34 42 55.3% Ameritech Advanced Data Services, 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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Weekly Routing Table Report
by Routing Analysis 25 Oct '01

25 Oct '01

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 26 Oct, 2001 Analysis Summary ---------------- BGP routing table entries examined: 109470 Origin ASes present in the Internet Routing Table: 11961 Origin ASes announcing only one prefix: 4434 Transit ASes present in the Internet Routing Table: 1580 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 50 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: 1255266365 Equivalent to 74 /8s, 209 /16s and 216 /24s Percentage of available address space announced: 33.9 Percentage of allocated address space announced: 64.6 Percentage of available address space allocated: 52.4 Total number of prefixes smaller than registry allocations: 74577 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 16784 Prefixes being announced from the APNIC address blocks: 15268 APNIC Region origin ASes present in the Internet Routing Table: 1382 APNIC Region origin ASes announcing only one prefix: 459 APNIC Region transit ASes present in the Internet Routing Table: 240 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 14 Number of APNIC addresses announced to Internet: 83195575 Equivalent to 4 /8s, 245 /16s and 118 /24s Percentage of available APNIC address space announced: 70.2 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 74655 Prefixes being announced from the ARIN address blocks: 53426 ARIN Region origin ASes present in the Internet Routing Table: 7182 ARIN Region origin ASes announcing only one prefix: 2161 ARIN Region transit ASes present in the Internet Routing Table: 733 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 219300485 Equivalent to 13 /8s, 18 /16s and 66 /24s Percentage of available ARIN address space announced: 81.7 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: 18031 Prefixes being announced from the RIPE address blocks: 14444 RIPE Region origin ASes present in the Internet Routing Table: 3401 RIPE Region origin ASes announcing only one prefix: 1814 RIPE Region transit ASes present in the Internet Routing Table: 606 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 109440750 Equivalent to 6 /8s, 133 /16s and 238 /24s Percentage of available RIPE address space announced: 72.5 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 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 Description 1221 1574 1307 Telstra Pty Ltd 2764 408 359 connect.com.au pty ltd 703 377 361 UUNET Technologies, Inc. 2907 374 1865 SINET Japan 4755 300 163 Videsh Sanchar Nigam Ltd. Aut 7474 292 274 Optus Communications Pty Ltd 4134 251 1881 Data Communications Bureau 4766 186 1466 Korea Internet Exchange for " 4740 173 26 OzEmail ISP 1659 172 1173 Taiwan Academic Network (TANe 7539 162 157 TANet2, sponsored by NSC, TAI 9443 160 52 Primus Telecommunications 17557 143 9 Pakistan Telecom 2521 139 171 PSINet Japan 4812 132 298 China Telecom (Group) 9768 131 363 Korea Telecom 4786 123 14 NetConnect Communications Pty 9583 123 53 Satyam Infoway Ltd., 4763 121 69 Telstra New Zealand 4713 118 901 NTT Communications Corporatio RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 702 941 1943 UUNET Technologies, Inc. 3301 435 950 TeliaNet Sweden 1257 273 516 SWIPnet Swedish IP Network 680 241 2309 DFN-IP service G-WiN 3215 236 539 France Telecom / &Equant 5515 195 688 Sonera Finland Autonomous Sys 3320 193 1941 Deutsche Telekom AG 786 185 1890 The JANET IP Service 8708 164 17 Romania Data Systems S.A. 5495 162 3 University Network 15870 141 10 Global Center Frankfurt 5400 139 64 Concert European Core Network 719 133 289 LANLINK autonomous system 3303 130 560 Swisscom Ltd 2856 129 776 BTnet UK Regional network 1270 127 724 UUNET Germany 5549 124 82 Nextra Deutschland GmbH + Co. 1103 119 3974 SURFnet BV 15878 115 9 Global Center Paris 517 112 252 KPNQwest Germany GmbH ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 701 2279 9099 UUNET Technologies, Inc. 3908 1175 1691 Supernet, Inc. 7018 1077 7325 AT&T 7046 863 1024 UUNET Technologies, Inc. 1 849 8541 BBN Planet 1239 733 3242 Sprint 209 576 2238 Qwest 3967 542 461 Exodus Communication 690 507 74 Merit Network 2914 470 2265 Verio, Inc. 4293 450 113 Cable & Wireless USA 2149 410 329 Performance Systems, Inc. 3561 403 2350 Cable & Wireless USA 4323 402 372 Time Warner Communications, I 3549 387 843 Global Crossing 577 353 636 Bell Advanced Communications 705 352 64 UUNET Technologies, Inc. 15290 343 339 AT&T Canada IES 3741 342 757 The Internet Solution 4151 337 1250 USDA Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv Description 701 2279 9099 UUNET Technologies, Inc. 1221 1574 1307 Telstra Pty Ltd 3908 1175 1691 Supernet, Inc. 7018 1077 7325 AT&T 702 941 1943 UUNET Technologies, Inc. 7046 863 1024 UUNET Technologies, Inc. 1 849 8541 BBN Planet 1239 733 3242 Sprint 209 576 2238 Qwest 3967 542 461 Exodus Communication 690 507 74 Merit Network 2914 470 2265 Verio, Inc. 4293 450 113 Cable & Wireless USA 3301 435 950 TeliaNet Sweden 2149 410 329 Performance Systems, Inc. 2764 408 359 connect.com.au pty ltd 3561 403 2350 Cable & Wireless USA 4323 402 372 Time Warner Communications, I 3549 387 843 Global Crossing 703 377 361 UUNET Technologies, Inc. List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 6971 UNALLOCATED 64.42.0.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.0.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.16.0/20 2914 Verio, Inc. 6971 UNALLOCATED 64.42.32.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.40.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.48.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.56.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.60.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.64.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.72.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.80.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.104.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.108.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.112.0/20 2914 Verio, Inc. 6971 UNALLOCATED 64.87.64.0/19 2516 Kokusai Denshin Denw 22141 UNALLOCATED 65.208.26.0/23 701 UUNET Technologies, 2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp. 6971 UNALLOCATED 192.103.229.0/24 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.230.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.232.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.236.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.237.0/24 2516 Kokusai Denshin Denw 6971 UNALLOCATED 199.249.223.0/24 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.248.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.248.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.252.0/23 2914 Verio, Inc. 6971 UNALLOCATED 206.58.254.0/23 2914 Verio, Inc. 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 6971 UNALLOCATED 216.105.192.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.121.224.0/19 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.192.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.192.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.200.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.200.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.174.208.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.232.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.128.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.210.128.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.210.140.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.160.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.176.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.184.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.200.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.216.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.220.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.224.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.210.232.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.236.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.240.0/20 2914 Verio, Inc. 6971 UNALLOCATED 216.229.96.0/20 2516 Kokusai Denshin Denw Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 128.65.0.0/16 3463 ACES Research Inc 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 400 Headquarters Standard Systems 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. 153.34.0.0/15 701 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 /9:5 /10:7 /11:12 /12:34 /13:89 /14:227 /15:392 /16:7025 /17:1311 /18:2434 /19:7064 /20:6020 /21:4830 /22:7179 /23:9217 /24:61749 /25:346 /26:348 /27:294 /28:312 /29:162 /30:203 /31:1 /32:191 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 701 1459 2279 UUNET Technologies, Inc. 1221 1429 1574 Telstra Pty Ltd 3908 891 1175 Supernet, Inc. 7046 685 863 UUNET Technologies, Inc. 702 639 941 UUNET Technologies, Inc. 7018 567 1077 AT&T 690 504 507 Merit Network 4293 435 450 Cable & Wireless USA 1 410 849 BBN Planet 209 409 576 Qwest 1239 407 733 Sprint 3967 369 542 Exodus Communication 2764 363 408 connect.com.au pty ltd 4323 339 402 Time Warner Communications, I 5102 322 335 Ameritech Advanced Data Servi 703 309 377 UUNET Technologies, Inc. 705 299 352 UUNET Technologies, Inc. 11371 297 308 Rhythms NetConnections 4151 294 337 USDA 2149 286 410 Performance Systems, Inc. Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:5 9:1 12:431 13:10 15:1 17:5 20:1 24:818 25:1 26:1 32:75 38:13 43:2 44:2 47:2 52:1 53:2 57:13 61:106 62:155 63:1956 64:1355 65:876 66:505 67:3 80:73 128:52 129:108 130:26 131:47 132:13 133:2 134:132 135:8 136:106 137:108 138:194 139:51 140:201 141:56 142:62 143:39 144:145 145:13 146:229 147:129 148:219 149:88 150:44 151:190 152:383 153:51 154:22 155:84 156:85 157:111 158:73 159:70 160:46 161:60 162:70 163:161 164:117 165:127 166:208 167:157 168:122 169:40 170:287 171:2 192:5432 193:2007 194:2096 195:838 196:460 198:3793 199:3520 200:2458 201:1 202:2822 203:4555 204:3384 205:2206 206:2864 207:2619 208:3039 209:3114 210:592 211:150 212:893 213:527 214:9 215:16 216:2989 217:412 218:2 End of report

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RE: Multihoming - Resilience or Independence
by Lu, Ping 23 Oct '01

23 Oct '01

> > > Even for PI and swamp space, if the organization divides > their space among > > different ISPs for > > multi-homed links. You still got a problem. > > That is what I thought this thread was about? > > > > That is not the suggestion. See above. The assignments per > > > block and RIR > > > is well known. > > > > Well known and lots of holes in it. That's the problem. > > Uhm, say again? You mean that there are people that take address > assignments with them when they change provider? I think that > is a much > larger problem than that of multihoming then... > I mean when a customer get a second link from a backup ISP using the same block from the primary ISP. Then it became a hole in the primary ISP's CIDR block. Ping Lu Cable & Wireless USA Network Tools and Analysis Group W: +1-703-292-2359 E: plu(a)cw.net

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RE: Multihoming - Resilience or Independence
by Lu, Ping 22 Oct '01

22 Oct '01

> > That's why filtering /20 only without re-aligning the holes > in the block > > won't > > work. In the end /20 make the routing table looks pretty > but they are > > black-holing > > lots of traffic. > > Well, it won't. The proposal for filtering is to filter on assigment > boundary, and for swamp space filter on /24. Now, what will break is > people punching holes in their PA space for multihomed users. Funny > enough, this has never been discussed (to my knowledge) as a > problem in > PTOMAIN WG of the IETF. There the argument was for traffic > engineering and > commercial relationships... > Even for PI and swamp space, if the organization divides their space among different ISPs for multi-homed links. You still got a problem. > > As we all agree that re-assign address is NOT practical at > all thus just > > filtering > > /20 block is not a good solution. > > That is not the suggestion. See above. The assignments per > block and RIR > is well known. Well known and lots of holes in it. That's the problem. Ping Lu Cable & Wireless USA Network Tools and Analysis Group W: +1-703-292-2359 E: plu(a)cw.net

2 1

Revised Document available: RIPE-229
by RIPE NCC Document Announcement Service 22 Oct '01

22 Oct '01

Revised RIPE Document Announcement -------------------------------------- A revised document is available from the RIPE document store. Short content description ------------------------- This document recommends a set of route-flap damping parameters that should be applied by all ISPs in the Internet and should be deployed as default values by BGP router vendors. This document obsoletes ripe-210 and ripe-178. The document is available in HTML format at: http://www.ripe.net/ripe/docs/ripe-229.html Accessing the RIPE document store --------------------------------- The RIPE document store is 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-229.ps PostScript version ftp://ftp.ripe.net/ripe/docs/ripe-229.txt plain text version

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The Cidr Report
by CIDR Report 19 Oct '01

19 Oct '01

This is an auto-generated mail on Fri Oct 19 23:00:00 PDT 2001 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 19Oct01 0) General Status Table History ------------- Date Prefixes 121001 104773 131001 104893 141001 104864 151001 104979 161001 105115 171001 105004 181001 105147 191001 104997 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: 11802 Number of ASes announcing only one prefix: 7010 (3983 cidr, 3027 classful) Largest number of cidr routes: 852 announced by AS701 Largest number of classful routes: 1392 announced by AS701 1) Gains by aggregating at the origin AS level --- 19Oct01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1231 944 287 23.3% Telstra Pty Ltd AS4151 306 171 135 44.1% USDA AS13999 136 9 127 93.4% Mega Cable S.A. de C.V. AS16473 201 76 125 62.2% Bell South AS577 304 184 120 39.5% Bell Advanced Communications Inc. AS4293 373 266 107 28.7% Cable & Wireless USA AS2048 216 116 100 46.3% State of Louisiana AS271 161 74 87 54.0% University of British Columbia AS11686 224 143 81 36.2% Education Networks of America AS4755 201 124 77 38.3% Videsh Sanchar Nigam Ltd. Autonom AS1239 488 414 74 15.2% Sprint AS12302 106 35 71 67.0% MobiFon S.A. AS4200 141 74 67 47.5% Apex Global Information Services, AS19632 72 7 65 90.3% Metropolis Intercom S.A. AS3464 160 96 64 40.0% Alabama SuperComputer Network AS17557 131 69 62 47.3% Pakistan Telecom AS16758 63 6 57 90.5% IKON Office Solutions AS209 308 253 55 17.9% Qwest AS306 60 6 54 90.0% National Guard Bureau AS226 146 93 53 36.3% Los Nettos AS400 136 85 51 37.5% Headquarters Standard Systems Cen AS17561 111 60 51 45.9% Internet service provision to Wes AS1913 155 106 49 31.6% Defense Logistics Agency AS1 527 479 48 9.1% BBN Planet AS10620 68 21 47 69.1% TVCABLE BOGOTA AS4323 247 201 46 18.6% Time Warner Communications, Inc. AS15290 248 202 46 18.5% AT&T Canada IES AS376 120 75 45 37.5% Reseau Interordinateurs Scientiqu AS16814 64 19 45 70.3% NSS, S.A. AS5106 81 38 43 53.1% Ameritech Advanced Data Services, 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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