This is an auto-generated mail on Fri Apr 23 12:00:00 PDT 1999 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. 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report.  ------------------------------------------------------------------------------ CIDR REPORT for 23Apr99 0) General Status Table History ------------- Date Prefixes 160499 58374 170499 58360 180499 58291 190499 58530 200499 58544 210499 58520 220499 58449 230499 58766 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 71.0.2.0/24 from AS1239 *** Bogus 221.43.160.0/19 from AS12323 AS Summary ---------- Number of ASes in routing system: 4930 Number of ASes announcing only one prefix: 2503 (1317 cidr, 1186 classful) Largest number of cidr routes: 375 announced by AS701 Largest number of classful routes: 801 announced by AS701  1) Gains by aggregating at the origin AS level --- 23Apr99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 360 148 212 58.9% BCnet Backbone AS577 291 181 110 37.8% Bell Canada Backbone AS4293 291 184 107 36.8% IMCI AS174 615 509 106 17.2% Performance Systems International AS4755 167 78 89 53.3% Videsh Sanchar Nigam Ltd. India AS2493 216 129 87 40.3% iSTAR Internet, Inc. AS3749 143 63 80 55.9% TECNET AS4200 175 100 75 42.9% AGIS (Apex Global Information Ser AS721 141 68 73 51.8% DLA-ASNBLOCK-AS AS1267 94 24 70 74.5% IUNET-AS AS7657 191 124 67 35.1% The Internet Group Limited AS7496 97 31 66 68.0% Power Up AS7545 110 46 64 58.2% TPG Internet Pty Ltd AS7046 261 198 63 24.1% UUNET-CUSTOMER AS1785 385 322 63 16.4% NYSERNet Backbone AS1221 449 387 62 13.8% AARNET-AS AS1239 527 467 60 11.4% SprintLink Backbone AS4740 331 274 57 17.2% Ozemail Pty Ltd (ASN-OZEMAIL) AS10928 110 53 57 51.8% UNKNOWN AS3493 238 184 54 22.7% INTERLINK AS719 470 417 53 11.3% LANLINK autonomous system AS72 92 40 52 56.5% Schlumberger Information Network AS803 79 35 44 55.7% SaskNet Backbone AS5674 80 36 44 55.0% PBI-NET-BLK AS3737 110 70 40 36.4% PenTeleData Inc. (ASN-PTD) AS1 508 473 35 6.9% BBNPLANET AS7122 109 77 32 29.4% MTS ADVANCED Network Policy AS9269 52 21 31 59.6% Hong Kong CTI AS4307 32 1 31 96.9% SVINET-1 AS11515 32 1 31 96.9% UNKNOWN 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