This is an auto-generated mail on Fri Dec 18 12:00:00 PST 1998 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 18Dec98 0) General Status Table History ------------- Date Prefixes 111298 54438 121298 54337 131298 54282 141298 54446 151298 54647 161298 54628 171298 54720 181298 54712 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: 4332 Number of ASes announcing only one prefix: 2126 (1136 cidr, 990 classful) Largest number of cidr routes: 358 announced by AS3561 Largest number of classful routes: 991 announced by AS701  1) Gains by aggregating at the origin AS level --- 18Dec98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 390 148 242 62.1% BCnet Backbone AS3749 229 70 159 69.4% TECNET AS2493 326 179 147 45.1% iSTAR Internet, Inc. AS1785 541 403 138 25.5% NYSERNet Backbone AS701 991 855 136 13.7% Alternet AS174 676 549 127 18.8% Performance Systems International AS5668 133 36 97 72.9% Century Telephone Inc. AS4200 191 98 93 48.7% AGIS (Apex Global Information Ser AS1267 109 30 79 72.5% IUNET-AS AS4293 207 135 72 34.8% IMCI AS4755 133 62 71 53.4% Videsh Sanchar Nigam Ltd. India AS549 220 154 66 30.0% ONet Backbone AS4740 394 330 64 16.2% Ozemail Pty Ltd (ASN-OZEMAIL) AS8517 128 71 57 44.5% UNKNOWN AS1221 384 328 56 14.6% AARNET-AS AS7046 247 194 53 21.5% UUNET-CUSTOMER AS7657 137 86 51 37.2% The Internet Group Limited AS7545 116 66 50 43.1% TPG Internet Pty Ltd AS1239 532 483 49 9.2% SprintLink Backbone AS72 88 40 48 54.5% Schlumberger Information Network AS7496 74 29 45 60.8% Power Up AS577 208 163 45 21.6% Bell Canada Backbone AS3221 84 42 42 50.0% RIPE-ASNBLOCK4 AS10928 90 49 41 45.6% UNKNOWN AS852 172 133 39 22.7% AGT Advance Communication AS719 440 403 37 8.4% LANLINK-AS AS803 71 35 36 50.7% SaskNet Backbone AS7122 111 76 35 31.5% MTS ADVANCED Network Policy AS3564 69 36 33 47.8% Microserve Infromation Systems In AS2707 65 32 33 50.8% WEC 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