This is an auto-generated mail on Fri Dec 31 12:00:00 PST 1999 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 31Dec99 0) General Status Table History ------------- Date Prefixes 241299 69384 251299 69404 261299 69325 271299 69066 281299 69066 291299 69048 301299 69139 311299 68794 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 219.91.160.0/22 from AS7742 *** Bogus 219.91.164.0/23 from AS7742 AS Summary ---------- Number of ASes in routing system: 6346 Number of ASes announcing only one prefix: 3404 (1871 cidr, 1533 classful) Largest number of cidr routes: 676 announced by AS701 Largest number of classful routes: 957 announced by AS701  1) Gains by aggregating at the origin AS level --- 31Dec99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 383 141 242 63.2% BCnet Backbone AS7046 398 260 138 34.7% UUNET-CUSTOMER AS9269 134 21 113 84.3% Hong Kong CTI AS1221 636 525 111 17.5% TELSTRA-AS AS2609 124 20 104 83.9% EUnet-TN AS7657 281 182 99 35.2% The Internet Group Limited AS7545 153 60 93 60.8% TPG Internet Pty Ltd AS1653 129 38 91 70.5% SUNET Swedish University Network AS4293 238 150 88 37.0% Internal ASN for C&W AS6429 198 117 81 40.9% RDC-INTERNET AS174 550 469 81 14.7% Performance Systems International AS577 258 180 78 30.2% Bell Canada Backbone AS7496 111 36 75 67.6% Power Up AS9706 101 28 73 72.3% Pusan Metropolitan City Office of AS3749 128 57 71 55.5% TECNET AS705 237 171 66 27.8% ALTERNET-AS AS4200 171 105 66 38.6% AGIS (Apex Global Information Ser AS9304 82 21 61 74.4% Hutchcity AS816 233 177 56 24.0% UUNET Canada (ASN-UUNETCA-AS4) AS209 344 289 55 16.0% Qwest Communications AS4740 302 251 51 16.9% Ozemail Pty Ltd (ASN-OZEMAIL) AS684 92 46 46 50.0% Manitoba Regional Network Backbon AS4755 114 73 41 36.0% Videsh Sanchar Nigam Ltd. India AS1 519 479 40 7.7% GTE Internetworking AS1727 119 80 39 32.8% MRMS-WEST AS7568 54 16 38 70.4% C.S. Communications Co., Ltd. AS701 957 919 38 4.0% Alternet AS6528 46 8 38 82.6% WORLD-LYNX AS7029 78 41 37 47.4% ALLTELNET AS8013 128 92 36 28.1% PSINET-CA 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