This is an auto-generated mail on Fri Apr 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 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 27Apr01 0) General Status Table History ------------- Date Prefixes 200401 100216 210401 100108 220401 100099 230401 100219 240401 100457 250401 100635 260401 100755 270401 100797 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 218.6.128.0/17 from AS4134 AS Summary ---------- Number of ASes in routing system: 10591 Number of ASes announcing only one prefix: 6292 (3570 cidr, 2722 classful) Largest number of cidr routes: 1365 announced by AS705 Largest number of classful routes: 1602 announced by AS1221  1) Gains by aggregating at the origin AS level --- 27Apr01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1602 1190 412 25.7% TELSTRA-AS AS701 1409 1222 187 13.3% Alternet AS705 393 258 135 34.4% part of AS assignment AS701 - AS7 AS4151 257 145 112 43.6% part of AS assignment AS4151 - AS AS6429 216 105 111 51.4% ATT LA Internet Chile AS6595 163 62 101 62.0% autonomous system number assigned AS13999 104 8 96 92.3% autonomous system number assigned AS4293 372 279 93 25.0% part of AS assignment AS4287 - AS AS8013 326 239 87 26.7% autonomous system number assigned AS7018 698 613 85 12.2% AT&T WorldNet Service Backbone AS4755 229 144 85 37.1% part of AS assignment AS4608 - AS AS15412 260 183 77 29.6% FLAG Telecom Global Internet AS AS577 238 169 69 29.0% autonomous system number assigned AS6471 113 49 64 56.6% autonomous system number assigned AS5106 101 37 64 63.4% autonomous system number assigned AS3464 153 91 62 40.5% Alabama Research and Education Ne AS3749 120 59 61 50.8% autonomous system number assigned AS724 202 144 58 28.7% part of AS assignment AS721 - AS7 AS3602 253 195 58 22.9% Sprint Canada Inc. AS11252 92 34 58 63.0% autonomous system number assigned AS16758 63 6 57 90.5% autonomous system number assigned AS1 608 551 57 9.4% GTE Internetworking AS6413 67 11 56 83.6% autonomous system number assigned AS226 149 93 56 37.6% Los Nettos AS4323 232 179 53 22.8% Time Warner Telecom Internet AS852 203 155 48 23.6% autonomous system number assigned AS9269 109 62 47 43.1% Hong Kong CTI AS855 145 99 46 31.7% part of AS assignment AS853 - AS1 AS13544 68 22 46 67.6% autonomous system number assigned AS12235 49 3 46 93.9% Cove Software Systems Inc 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