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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri Aug 17 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. 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 <[email protected]>. ------------------------------------------------------------------------------ CIDR REPORT for 17Aug01 0) General Status Table History ------------- Date Prefixes 100801 102845 110801 102706 120801 102533 130801 102657 140801 102662 150801 102621 160801 102577 170801 102866 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 82.105.0.0/16 from AS3269 *** Bogus 82.105.128.0/17 from AS3269 AS Summary ---------- Number of ASes in routing system: 11408 Number of ASes announcing only one prefix: 6792 (3875 cidr, 2917 classful) Largest number of cidr routes: 852 announced by AS701 Largest number of classful routes: 1406 announced by AS701 1) Gains by aggregating at the origin AS level --- 17Aug01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1258 970 288 22.9% Telstra Pty Ltd AS701 1406 1188 218 15.5% UUNET Technologies, Inc. AS2551 798 637 161 20.2% ICG NetAhead, Inc AS4151 289 165 124 42.9% USDA AS4293 379 270 109 28.8% Cable & Wireless USA AS6595 164 58 106 64.6% DoD Education Activity Network As AS577 294 188 106 36.1% Bell Advanced Communications Inc. AS16473 173 70 103 59.5% Bell South AS13999 113 11 102 90.3% Mega Cable S.A. de C.V. AS705 245 145 100 40.8% UUNET Technologies, Inc. AS6429 200 103 97 48.5% AT&T Chile Internet S.A. AS7018 741 652 89 12.0% AT&T AS4755 210 123 87 41.4% Videsh Sanchar Nigam Ltd. Autonom AS7046 324 254 70 21.6% UUNET Technologies, Inc. AS724 231 164 67 29.0% DLA Systems Automation Center AS6471 123 60 63 51.2% ENTEL CHILE S.A. AS12302 94 33 61 64.9% MobiFon S.A. AS1239 457 398 59 12.9% Sprint AS4200 126 68 58 46.0% Apex Global Information Services, AS3464 148 91 57 38.5% Alabama SuperComputer Network AS16758 63 6 57 90.5% IKON Office Solutions AS703 309 254 55 17.8% UUNET Technologies, Inc. AS3908 320 266 54 16.9% Supernet, Inc. AS226 147 94 53 36.1% Los Nettos AS1 543 490 53 9.8% BBN Planet AS6413 65 13 52 80.0% Southern Online Systems, Inc. AS209 284 232 52 18.3% Qwest AS4323 240 189 51 21.2% Time Warner Communications, Inc. AS17561 113 62 51 45.1% Internet service provision to Wes AS855 145 95 50 34.5% 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
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