This is an auto-generated mail on Fri Jan 15 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 15Jan99 0) General Status Table History ------------- Date Prefixes 080199 54976 090199 54679 100199 54744 110199 54918 120199 54860 130199 54884 140199 55099 150199 55155 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: 4408 Number of ASes announcing only one prefix: 2168 (1156 cidr, 1012 classful) Largest number of cidr routes: 355 announced by AS3561 Largest number of classful routes: 1013 announced by AS701  1) Gains by aggregating at the origin AS level --- 15Jan99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 389 144 245 63.0% UNKNOWN AS701 1013 860 153 15.1% UNKNOWN AS2493 319 173 146 45.8% UNKNOWN AS174 650 536 114 17.5% UNKNOWN AS5668 129 35 94 72.9% UNKNOWN AS3749 157 65 92 58.6% UNKNOWN AS4200 178 91 87 48.9% UNKNOWN AS1267 111 30 81 73.0% UNKNOWN AS4755 147 74 73 49.7% UNKNOWN AS4293 208 137 71 34.1% UNKNOWN AS549 218 152 66 30.3% UNKNOWN AS4740 388 326 62 16.0% UNKNOWN AS8517 134 75 59 44.0% UNKNOWN AS1221 395 336 59 14.9% UNKNOWN AS7657 142 87 55 38.7% UNKNOWN AS7545 111 58 53 47.7% UNKNOWN AS72 89 37 52 58.4% UNKNOWN AS3493 252 200 52 20.6% UNKNOWN AS7046 238 187 51 21.4% UNKNOWN AS1239 531 484 47 8.9% UNKNOWN AS10928 96 49 47 49.0% UNKNOWN AS7496 74 28 46 62.2% UNKNOWN AS577 210 164 46 21.9% UNKNOWN AS852 175 132 43 24.6% UNKNOWN AS719 452 409 43 9.5% UNKNOWN AS3221 84 42 42 50.0% UNKNOWN AS803 71 35 36 50.7% UNKNOWN AS6897 62 27 35 56.5% UNKNOWN AS7122 109 75 34 31.2% UNKNOWN AS2764 327 294 33 10.1% UNKNOWN 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