This is an auto-generated mail on Fri Jan 22 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 22Jan99 0) General Status Table History ------------- Date Prefixes 150199 55155 160199 55240 170199 55247 180199 55241 190199 55868 200199 55938 210199 55534 220199 55393 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: 4442 Number of ASes announcing only one prefix: 2186 (1168 cidr, 1018 classful) Largest number of cidr routes: 355 announced by AS3561 Largest number of classful routes: 1012 announced by AS701  1) Gains by aggregating at the origin AS level --- 22Jan99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 387 143 244 63.0% UNKNOWN AS701 1012 859 153 15.1% UNKNOWN AS2493 319 173 146 45.8% UNKNOWN AS174 655 541 114 17.4% UNKNOWN AS11305 115 7 108 93.9% UNKNOWN AS4200 189 97 92 48.7% UNKNOWN AS3749 158 66 92 58.2% UNKNOWN AS1267 111 30 81 73.0% UNKNOWN AS4755 147 72 75 51.0% UNKNOWN AS4293 208 137 71 34.1% UNKNOWN AS549 218 152 66 30.3% UNKNOWN AS4740 387 325 62 16.0% UNKNOWN AS1221 399 339 60 15.0% UNKNOWN AS7046 253 196 57 22.5% UNKNOWN AS1239 540 486 54 10.0% UNKNOWN AS72 89 37 52 58.4% UNKNOWN AS7657 140 89 51 36.4% UNKNOWN AS7545 110 59 51 46.4% UNKNOWN AS577 221 172 49 22.2% UNKNOWN AS10928 98 49 49 50.0% UNKNOWN AS7496 76 28 48 63.2% UNKNOWN AS852 177 134 43 24.3% UNKNOWN AS719 452 409 43 9.5% UNKNOWN AS3221 84 42 42 50.0% UNKNOWN AS803 72 36 36 50.0% UNKNOWN AS6897 64 28 36 56.2% UNKNOWN AS3561 723 687 36 5.0% UNKNOWN AS7122 110 76 34 30.9% UNKNOWN AS2764 324 291 33 10.2% UNKNOWN AS6332 101 70 31 30.7% 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