This is an auto-generated mail on Fri Dec 21 23:00:00 PST 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. 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. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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>.  ------------------------------------------------------------------------------ CIDR REPORT for 21Dec01 0) General Status Table History ------------- Date Prefixes 141201 104473 151201 104490 161201 104499 171201 104515 181201 104565 191201 104617 201201 104497 211201 104932 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: 12187 Number of ASes announcing only one prefix: 7366 (4178 cidr, 3188 classful) Largest number of cidr routes: 773 announced by AS701 Largest number of classful routes: 1372 announced by AS701  1) Gains by aggregating at the origin AS level --- 21Dec01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1179 909 270 22.9% Telstra Pty Ltd AS701 1372 1142 230 16.8% UUNET Technologies, Inc. AS4151 292 160 132 45.2% USDA AS577 317 193 124 39.1% Bell Advanced Communications Inc. AS16473 199 77 122 61.3% Bell South AS7018 795 682 113 14.2% AT&T AS6595 162 58 104 64.2% DoD Education Activity Network As AS705 286 183 103 36.0% UUNET Technologies, Inc. AS852 399 302 97 24.3% Telus Advanced Communications AS17557 169 80 89 52.7% Pakistan Telecom AS8010 123 38 85 69.1% PublicNet Communications, Inc. AS7046 306 225 81 26.5% UUNET Technologies, Inc. AS4755 213 132 81 38.0% Videsh Sanchar Nigam Ltd. Autonom AS19632 92 11 81 88.0% Metropolis Intercom S.A. AS1239 490 411 79 16.1% Sprint AS2048 183 107 76 41.5% State of Louisiana AS12302 109 33 76 69.7% MobiFon S.A. AS724 220 158 62 28.2% DLA Systems Automation Center AS703 284 222 62 21.8% UUNET Technologies, Inc. AS3464 160 98 62 38.8% Alabama SuperComputer Network AS4200 112 55 57 50.9% Apex Global Information Services, AS16758 63 6 57 90.5% IKON Office Solutions AS4323 368 312 56 15.2% Time Warner Communications, Inc. AS3908 321 265 56 17.4% Supernet, Inc. AS2149 326 270 56 17.2% Performance Systems, Inc. AS13999 70 14 56 80.0% Mega Cable S.A. de C.V. AS1 514 458 56 10.9% BBN Planet AS6471 120 66 54 45.0% ENTEL CHILE S.A. AS209 297 246 51 17.2% Qwest AS855 144 94 50 34.7% Canadian Research Network 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