This is an auto-generated mail on Fri Nov 27 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 27Nov98 0) General Status Table History ------------- Date Prefixes 201198 54986 211198 55088 221198 55084 231198 55066 241198 55125 251198 55118 261198 54086 271198 54161 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: 4262 Number of ASes announcing only one prefix: 2087 (1105 cidr, 982 classful) Largest number of cidr routes: 339 announced by AS3561 Largest number of classful routes: 1002 announced by AS701  1) Gains by aggregating at the origin AS level --- 27Nov98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 349 153 196 56.2% BCnet Backbone AS3749 229 73 156 68.1% TECNET AS2493 341 193 148 43.4% iSTAR Internet, Inc. AS701 1002 867 135 13.5% Alternet AS1785 535 400 135 25.2% NYSERNet Backbone AS174 686 555 131 19.1% Performance Systems International AS4200 188 96 92 48.9% AGIS (Apex Global Information Ser AS5668 126 39 87 69.0% Century Telephone Inc. AS1267 109 30 79 72.5% IUNET-AS AS4755 133 59 74 55.6% Videsh Sanchar Nigam Ltd. India AS4293 207 135 72 34.8% IMCI AS549 224 156 68 30.4% ONet Backbone AS4740 390 330 60 15.4% Ozemail Pty Ltd (ASN-OZEMAIL) AS8517 127 71 56 44.1% UNKNOWN AS7046 256 200 56 21.9% UUNET-CUSTOMER AS1221 382 327 55 14.4% AARNET-AS AS6335 71 19 52 73.2% NTRNET AS7545 117 66 51 43.6% TPG Internet Pty Ltd AS72 88 40 48 54.5% Schlumberger Information Network AS1239 529 481 48 9.1% SprintLink Backbone AS7657 138 92 46 33.3% The Internet Group Limited AS803 77 33 44 57.1% SaskNet Backbone AS7496 72 30 42 58.3% Power Up AS3221 84 42 42 50.0% RIPE-ASNBLOCK4 AS852 169 128 41 24.3% AGT Advance Communication AS10928 89 48 41 46.1% UNKNOWN AS719 440 402 38 8.6% LANLINK-AS AS7122 115 77 38 33.0% MTS ADVANCED Network Policy AS3804 157 124 33 21.0% Bell Solutions 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