This is an auto-generated mail on Fri Apr 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 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 20Apr01 0) General Status Table History ------------- Date Prefixes 130401 99823 140401 99656 150401 99795 160401 99731 170401 99601 180401 99779 190401 99884 200401 100216 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 223.255.46.0 from AS6853 *** Bogus 223.255.70.0 from AS6853 AS Summary ---------- Number of ASes in routing system: 10519 Number of ASes announcing only one prefix: 6219 (3531 cidr, 2688 classful) Largest number of cidr routes: 1218 announced by AS705 Largest number of classful routes: 1592 announced by AS1221  1) Gains by aggregating at the origin AS level --- 20Apr01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1592 1194 398 25.0% Telstra Pty Ltd AS701 1462 1276 186 12.7% 1 AS705 368 251 117 31.8% 1 AS6429 214 105 109 50.9% 1 AS4151 247 139 108 43.7% 1 AS6595 163 62 101 62.0% 1 AS13999 104 8 96 92.3% 1 AS4293 370 277 93 25.1% 1 AS7018 694 605 89 12.8% 1 AS15412 430 341 89 20.7% FLAG Telecom Global Internet AS AS8013 319 236 83 26.0% 1 AS4755 218 138 80 36.7% Videsh Sanchar Nigam Ltd. Autonom AS577 241 172 69 28.6% 1 AS5106 101 37 64 63.4% 1 AS3749 120 59 61 50.8% 1 AS9498 75 15 60 80.0% BHARTI BT INTERNET LTD. AS3464 151 92 59 39.1% 1 AS11252 92 34 58 63.0% 1 AS724 203 146 57 28.1% 1 AS16758 63 6 57 90.5% 1 AS1 609 552 57 9.4% 1 AS6413 67 11 56 83.6% 1 AS226 149 93 56 37.6% 1 AS7568 84 29 55 65.5% C.S. Communications Co., Ltd. AS6471 99 46 53 53.5% 1 AS4323 230 178 52 22.6% 1 AS9269 116 67 49 42.2% City Telecom (H.K.) Ltd. AS852 200 152 48 24.0% 1 AS10692 62 14 48 77.4% 1 AS9683 48 2 46 95.8% Kyonggi Cable TV 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