This is an auto-generated mail on Fri Jul 27 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report.  ------------------------------------------------------------------------------ CIDR REPORT for 27Jul01 0) General Status Table History ------------- Date Prefixes 200701 100950 210701 101113 220701 101068 230701 101044 240701 101039 250701 101495 260701 101472 270701 101541 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 82.105.0.0/16 from AS3269 *** Bogus 82.105.128.0/17 from AS3269 AS Summary ---------- Number of ASes in routing system: 11297 Number of ASes announcing only one prefix: 6733 (3865 cidr, 2868 classful) Largest number of cidr routes: 869 announced by AS701 Largest number of classful routes: 1414 announced by AS701  1) Gains by aggregating at the origin AS level --- 27Jul01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1330 989 341 25.6% Telstra Pty Ltd AS701 1414 1199 215 15.2% UUNET Technologies, Inc. AS4293 385 276 109 28.3% Cable & Wireless USA AS6595 167 60 107 64.1% DoD Education Activity Networ AS6429 200 101 99 49.5% RdC Internet AS13999 104 8 96 92.3% Mega Cable S.A. de C.V. AS705 237 142 95 40.1% UUNET Technologies, Inc. AS4755 215 121 94 43.7% VSNL India AS7018 723 633 90 12.4% AT&T AS2551 429 342 87 20.3% NETCOM On-Line Communication AS4151 164 80 84 51.2% USDA AS8013 295 216 79 26.8% PSINet Ltd. Canada AS724 232 159 73 31.5% DLA Systems Automation Center AS577 247 174 73 29.6% Bell Canada AS7046 314 247 67 21.3% UUNET Technologies, Inc. AS16473 127 60 67 52.8% Bell South AS6471 124 60 64 51.6% ENTEL CHILE S.A. AS3464 152 90 62 40.8% Alabama SuperComputer Network AS4200 120 60 60 50.0% Apex Global Information Servi AS1239 461 402 59 12.8% Sprint ICM-Inria AS16758 63 6 57 90.5% IKON Office Solutions AS12302 89 33 56 62.9% MobiFon S.A. AS1 567 511 56 9.9% BBN Planet AS226 143 90 53 37.1% Los Nettos AS6413 65 13 52 80.0% Southern Online Systems, Inc. AS3908 200 149 51 25.5% Supernet, Inc. AS17561 112 61 51 45.5% Internet Service West Austral AS852 214 164 50 23.4% Telus Advanced Communications AS9842 54 5 49 90.7% Lotte Data Communication Comp AS4323 235 186 49 20.9% Time Warner Communications, I 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