This is an auto-generated mail on Fri Jul 20 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. 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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@cisco.com>. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report.  ------------------------------------------------------------------------------ CIDR REPORT for 20Jul01 0) General Status Table History ------------- Date Prefixes 130701 100848 140701 100609 150701 101337 160701 100485 170701 100311 180701 100565 190701 100739 200701 100950 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: 11241 Number of ASes announcing only one prefix: 6694 (3840 cidr, 2854 classful) Largest number of cidr routes: 865 announced by AS701 Largest number of classful routes: 1414 announced by AS701  1) Gains by aggregating at the origin AS level --- 20Jul01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1347 1001 346 25.7% Telstra Pty Ltd AS701 1414 1199 215 15.2% UUNET Technologies, Inc. AS4293 391 280 111 28.4% Cable & Wireless USA AS6595 169 59 110 65.1% DoD Education Activity Networ AS6429 199 102 97 48.7% RdC Internet AS13999 104 8 96 92.3% Mega Cable S.A. de C.V. AS705 232 137 95 40.9% UUNET Technologies, Inc. AS7018 726 634 92 12.7% AT&T AS4755 211 121 90 42.7% VSNL India AS4151 161 79 82 50.9% USDA AS8013 298 217 81 27.2% PSINet Ltd. Canada AS577 246 173 73 29.7% Bell Canada AS724 230 158 72 31.3% DLA Systems Automation Center AS7046 313 249 64 20.4% UUNET Technologies, Inc. AS6471 122 58 64 52.5% ENTEL CHILE S.A. AS16473 121 58 63 52.1% Bell South AS4200 131 70 61 46.6% Apex Global Information Servi AS3464 148 91 57 38.5% Alabama SuperComputer Network AS16758 63 6 57 90.5% IKON Office Solutions AS1 569 513 56 9.8% BBN Planet AS1239 447 392 55 12.3% Sprint ICM-Inria AS6413 65 13 52 80.0% Southern Online Systems, Inc. AS3908 203 152 51 25.1% Supernet, Inc. AS17561 112 61 51 45.5% Internet Service West Austral AS852 213 163 50 23.5% Telus Advanced Communications AS4323 235 185 50 21.3% Time Warner Communications, I AS2149 320 270 50 15.6% Performance Systems, Inc. AS12302 83 33 50 60.2% MobiFon S.A. AS703 268 220 48 17.9% UUNET Technologies, Inc. AS5106 81 33 48 59.3% Ameritech Advanced Data Servi 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