This is an auto-generated mail on Fri May 31 23:00:01 PDT 2002 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 amount 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 31May02 0) General Status Table History ------------- Date Prefixes 240502 110020 250502 110319 260502 109931 270502 110178 280502 110335 290502 110367 300502 110842 310502 110978 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 220.36.0.0/16 from AS17676 *** Bogus 220.40.0.0/16 from AS17676 *** Bogus 220.47.0.0/16 from AS17676 AS Summary ---------- Number of ASes in routing system: 13044 Number of ASes announcing only one prefix: 7934 (4445 cidr, 3489 classful) Largest number of cidr routes: 635 announced by AS701 Largest number of classful routes: 1357 announced by AS701  1) Gains by aggregating at the origin AS level --- 31May02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1357 1087 270 19.9% UUNET Technologies, Inc. AS1221 1109 860 249 22.5% UNREGISTERED AS17557 285 109 176 61.8% Pakistan Telecom AS852 587 428 159 27.1% Telus Advanced Communications AS7018 816 685 131 16.1% AT&T AS16473 198 77 121 61.1% Bell South AS6595 167 56 111 66.5% DoD Education Activity Network As AS705 304 203 101 33.2% UUNET Technologies, Inc. AS4151 236 141 95 40.3% USDA AS19632 98 4 94 95.9% Metropolis Intercom S.A. AS1239 511 423 88 17.2% Sprint AS16814 104 19 85 81.7% NSS, S.A. AS12302 120 35 85 70.8% SingNet AS7046 328 244 84 25.6% UUNET Technologies, Inc. AS7303 148 68 80 54.1% Telecom Argentina Stet-France Tel AS2048 181 104 77 42.5% State of Louisiana AS577 267 194 73 27.3% Bell Advanced Communications Inc. AS4323 416 345 71 17.1% Time Warner Communications, Inc. AS724 220 154 66 30.0% DLA Systems Automation Center AS226 154 91 63 40.9% Los Nettos AS3464 166 104 62 37.3% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 83 23 60 72.3% TVCABLE BOGOTA AS4755 169 110 59 34.9% Videsh Sanchar Nigam Ltd. Autonom AS1 455 397 58 12.7% GENUITY AS3908 311 254 57 18.3% Supernet, Inc. AS16758 63 6 57 90.5% IKON Office Solutions AS209 312 256 56 17.9% Qwest AS9051 81 26 55 67.9% INCONET Autonomous System AS3233 105 51 54 51.4% RNC - Romanian Natioanal R&D Netw Total 55292 42691 12601 22.8% 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