This is an auto-generated mail on Fri Sep 21 23:00:01 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. 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 21Sep01 0) General Status Table History ------------- Date Prefixes 140901 102582 150901 102950 160901 102809 170901 103092 180901 103047 190901 102981 200901 103292 210901 103625 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: 11609 Number of ASes announcing only one prefix: 6928 (3946 cidr, 2982 classful) Largest number of cidr routes: 854 announced by AS701 Largest number of classful routes: 1379 announced by AS701  1) Gains by aggregating at the origin AS level --- 21Sep01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1259 956 303 24.1% Telstra Pty Ltd AS701 1379 1176 203 14.7% UUNET Technologies, Inc. AS4151 296 169 127 42.9% USDA AS577 314 193 121 38.5% Bell Advanced Communications Inc. AS4293 379 270 109 28.8% Cable & Wireless USA AS6595 166 59 107 64.5% DoD Education Activity Network As AS705 249 152 97 39.0% UUNET Technologies, Inc. AS7018 769 672 97 12.6% AT&T AS6429 196 101 95 48.5% AT&T Chile Internet S.A. AS13999 109 15 94 86.2% Mega Cable S.A. de C.V. AS2048 212 120 92 43.4% State of Louisiana AS16473 154 65 89 57.8% Bell South AS4755 210 124 86 41.0% Videsh Sanchar Nigam Ltd. Autonom AS12302 98 28 70 71.4% MobiFon S.A. AS4200 142 74 68 47.9% Apex Global Information Services, AS1239 465 398 67 14.4% Sprint AS7046 317 252 65 20.5% UUNET Technologies, Inc. AS6471 127 62 65 51.2% ENTEL CHILE S.A. AS724 218 155 63 28.9% DLA Systems Automation Center AS17557 125 65 60 48.0% Pakistan Telecom AS19632 67 9 58 86.6% Metropolis Intercom S.A. AS16758 63 6 57 90.5% IKON Office Solutions AS209 313 258 55 17.6% Qwest AS703 301 249 52 17.3% UUNET Technologies, Inc. AS3464 147 95 52 35.4% Alabama SuperComputer Network AS226 145 93 52 35.9% Los Nettos AS17561 113 62 51 45.1% Internet service provision to Wes AS1 535 484 51 9.5% BBN Planet AS4323 249 199 50 20.1% Time Warner Communications, Inc. AS10620 67 20 47 70.1% TVCABLE BOGOTA 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