- routing-wg - mailman.ripe.net

Re: unknown/undocumented AS numbers
by Christian Panigl, ACOnet/UniVie 20 Nov '98

20 Nov '98

>Date: Fri, 13 Nov 1998 18:58:19 -0700 >From: David Kessens <David.Kessens(a)qwest.net> > >For those people that are playing or want to play with the ISI RIPE >based server for RPSL: > >I have build in automatic referral support in case a NIC handle, >domain or AS# cannot be found in the local copy/mirror of the >database. This referral mechanism is not perfect but makes the >information that you get back more useful then it used to be... Hi David, great, however, it doesn't seem to work for my example, or there is no ARIN mirror for ASes or whatever reason: $ whois -h whois.6bone.net AS11042 % RIPEdb(3.0.0a13) with ISI RPSL extensions % referto: whois -h whois.internic.net -p 43 as11042 % referto: whois -h whois.internic.net -p 43 !as11042 $ whois -h whois.6bone.net 11042 % RIPEdb(3.0.0a13) with ISI RPSL extensions % No entries found in 6BONE database. Cheers Christian

2 1

The Cidr Report
by Tony Bates 20 Nov '98

20 Nov '98

This is an auto-generated mail on Fri Nov 20 12:00:00 PST 1998 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 20Nov98 0) General Status Table History ------------- Date Prefixes 131198 53601 141198 53727 151198 53552 161198 55111 171198 55374 181198 55152 191198 54897 201198 54986 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: 4227 Number of ASes announcing only one prefix: 2060 (1080 cidr, 980 classful) Largest number of cidr routes: 339 announced by AS3561 Largest number of classful routes: 1083 announced by AS3909 1) Gains by aggregating at the origin AS level --- 20Nov98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS3909 1083 567 516 47.6% Supernet, Inc. AS271 347 151 196 56.5% BCnet Backbone AS3749 230 70 160 69.6% TECNET AS2493 347 197 150 43.2% iSTAR Internet, Inc. AS1785 534 399 135 25.3% NYSERNet Backbone AS701 986 854 132 13.4% Alternet AS174 689 557 132 19.2% Performance Systems International AS4200 187 95 92 49.2% AGIS (Apex Global Information Ser AS5668 126 39 87 69.0% Century Telephone Inc. AS1267 108 29 79 73.1% IUNET-AS AS4755 134 60 74 55.2% Videsh Sanchar Nigam Ltd. India AS4293 207 135 72 34.8% IMCI AS549 222 158 64 28.8% ONet Backbone AS4740 374 317 57 15.2% Ozemail Pty Ltd (ASN-OZEMAIL) AS7046 254 198 56 22.0% UUNET-CUSTOMER AS8517 126 72 54 42.9% ULAKNET-ASN AS6335 71 19 52 73.2% NTRNET AS7545 117 66 51 43.6% TPG Internet Pty Ltd AS72 88 40 48 54.5% Schlumberger Information Network AS1239 528 480 48 9.1% SprintLink Backbone AS1221 363 316 47 12.9% AARNET-AS AS803 77 33 44 57.1% SaskNet Backbone AS7122 128 85 43 33.6% MTS ADVANCED Network Policy AS10928 91 48 43 47.3% UNKNOWN AS3221 84 42 42 50.0% EENet Autonomous System AS852 167 126 41 24.6% AGT Advance Communication AS3804 183 143 40 21.9% Bell Solutions AS719 436 400 36 8.3% LANLINK autonomous system AS7657 96 61 35 36.5% The Internet Group Limited AS7496 66 33 33 50.0% Power Up 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

1 0

Re: unknown/undocumented AS numbers
by Christian Panigl, ACOnet/UniVie 13 Nov '98

13 Nov '98

>Date: Wed, 11 Nov 1998 17:31:03 +0100 >From: Julia Edwards <julia(a)ripe.net> > >Dear Christian, > >I found this: > >julia@x7 ~ > whois -h whois.arin.net 11042 >Orion Network Systems, Inc. (ASN-ONSI-NET1) >[...] Dear Julia and Ralf, thanks and: OH NO :-( Question: Who else would be of the humble opinion that whois.arin.net should be probably as clever to find also "AS11042" not only "11042" ? Cheers Christian

5 4

The Cidr Report
by Tony Bates 13 Nov '98

13 Nov '98

This is an auto-generated mail on Fri Nov 13 12:00:00 PST 1998 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 13Nov98 0) General Status Table History ------------- Date Prefixes 061198 53673 071198 53323 081198 53161 091198 53249 101198 53388 111198 53419 121198 53674 131198 53601 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: 4244 Number of ASes announcing only one prefix: 2088 (1113 cidr, 975 classful) Largest number of cidr routes: 338 announced by AS3561 Largest number of classful routes: 975 announced by AS701 1) Gains by aggregating at the origin AS level --- 13Nov98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 349 150 199 57.0% BCnet Backbone AS1785 583 402 181 31.0% NYSERNet Backbone AS3749 230 70 160 69.6% TECNET AS2493 345 195 150 43.5% iSTAR Internet, Inc. AS701 975 842 133 13.6% Alternet AS174 690 562 128 18.6% Performance Systems International AS4200 187 95 92 49.2% AGIS (Apex Global Information Ser AS5668 127 40 87 68.5% Century Telephone Inc. AS4293 207 135 72 34.8% IMCI AS4755 128 64 64 50.0% Videsh Sanchar Nigam Ltd. India AS549 221 159 62 28.1% ONet Backbone AS4740 388 326 62 16.0% Ozemail Pty Ltd (ASN-OZEMAIL) AS7046 265 205 60 22.6% UUNET-CUSTOMER AS8517 127 72 55 43.3% ULAKNET-ASN AS7545 117 65 52 44.4% TPG Internet Pty Ltd AS6335 71 19 52 73.2% NTRNET AS72 88 40 48 54.5% Schlumberger Information Network AS1239 523 477 46 8.8% SprintLink Backbone AS803 77 33 44 57.1% SaskNet Backbone AS1221 354 310 44 12.4% AARNET-AS AS7122 127 85 42 33.1% MTS ADVANCED Network Policy AS3221 84 42 42 50.0% EENet Autonomous System AS852 166 125 41 24.7% AGT Advance Communication AS10928 91 50 41 45.1% UNKNOWN AS3804 182 143 39 21.4% Bell Solutions AS7496 66 33 33 50.0% Power Up AS2707 65 32 33 50.8% WEC AS6181 63 31 32 50.8% FUSE-NET AS719 432 401 31 7.2% LANLINK autonomous system AS4307 32 1 31 96.9% SVINET-1 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

1 0

unknown/undocumented AS numbers
by Christian Panigl, ACOnet/UniVie 12 Nov '98

12 Nov '98

Dear colleagues, does anybody have a hint for me where all those "unknown"/undocumented (usually 5digit) AS numbers are coming from ? Who is assigning them ? How can they be identified ? Sorry if this is a very stupid question, but I simply don't know where else to look for them (just an example, by "accident" I do know that AS11042 is used by LoralOrion): $ whois -h whois.ripe.net -a AS11042 [...] % No entries found for the selected source(s). [...] $ whois -h whois.ra.net -a AS11042 %% No entries found for the selected source(s). $ whois -h whois.arin.net AS11042 [...] No match for "AS11042". [...] Kind regards Christian --- ---------------------------------------------------------------------- --- --- Christian Panigl : Vienna University Computer Center - ACOnet --- --- VUCC - ACOnet - VIX : -------------------------------------------- --- --- Universitaetsstrasse 7 : Mail: Panigl(a)CC.UniVie.ac.at (CP8-RIPE) --- --- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) --- --- ---------------------------------------------------------------------- ---

3 2

RE: unknown/undocumented AS numbers
by Mike Norris 12 Nov '98

12 Nov '98

Many thanks, Marc - that's a good tip. I'll have forgotten it tomorrow, though, so I agree with Christian's plea. Mike ---------- From: Marc Roger[SMTP:Marc.Roger@belnet.be] Sent: 11 November 1998 18:04 To: Christian Panigl, ACOnet/UniVie Cc: routing-wg(a)ripe.net Subject: Re: unknown/undocumented AS numbers Christian, For the ARIN database (and some others), try not adding "AS" before the AS number, as in: % whois -h whois.arin.net 11042 Orion Network Systems, Inc. (ASN-ONSI-NET1) 2440 Research Blvd., Suite 400 Rockville, MD 20850 US Autonomous System Name: ONSI-NET1 Autonomous System Number: 11042 Coordinator: Azizi, Peyman (PA-ARIN) pazizi(a)ONSI.COM (301)670-6576 (FAX) (301)590-7401 Record last updated on 18-Mar-98. Database last updated on 10-Nov-98 16:11:10 EDT. The ARIN Registration Services Host contains ONLY Internet Network Information: Networks, ASN's, and related POC's. Please use the whois server at rs.internic.net for DOMAIN related Information and nic.mil for NIPRNET Information. On Wed, 11 Nov 1998, Christian Panigl, ACOnet/UniVie wrote: > $ whois -h whois.ra.net -a AS11042 > %% No entries found for the selected source(s). > > > $ whois -h whois.arin.net AS11042 > [...] > No match for "AS11042". > [...] -- Marc.Roger(a)belnet.be, BELNET, the National Research Network

1 0

The Cidr Report
by Tony Bates 06 Nov '98

06 Nov '98

This is an auto-generated mail on Fri Nov 6 12:00:00 PST 1998 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 06Nov98 0) General Status Table History ------------- Date Prefixes 301098 53608 311098 53383 011198 53362 021198 53333 031198 53404 041198 53761 051198 53388 061198 53673 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: 4196 Number of ASes announcing only one prefix: 2042 (1076 cidr, 966 classful) Largest number of cidr routes: 342 announced by AS3561 Largest number of classful routes: 963 announced by AS701 1) Gains by aggregating at the origin AS level --- 06Nov98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 347 148 199 57.3% BCnet Backbone AS1785 603 409 194 32.2% NYSERNet Backbone AS4293 407 230 177 43.5% IMCI AS3749 232 72 160 69.0% TECNET AS2493 344 194 150 43.6% iSTAR Internet, Inc. AS701 963 832 131 13.6% Alternet AS174 688 560 128 18.6% Performance Systems International AS4200 190 98 92 48.4% AGIS (Apex Global Information Ser AS5668 127 40 87 68.5% Century Telephone Inc. AS4740 395 332 63 15.9% Ozemail Pty Ltd (ASN-OZEMAIL) AS7046 254 196 58 22.8% UUNET-CUSTOMER AS4755 120 64 56 46.7% Videsh Sanchar Nigam Ltd. India AS7545 118 63 55 46.6% APNIC-AS-2-BLOCK AS8517 126 72 54 42.9% UNKNOWN AS6335 70 19 51 72.9% NTRNET AS549 197 147 50 25.4% ONet Backbone AS72 89 41 48 53.9% Schlumberger Information Network AS1239 522 476 46 8.8% SprintLink Backbone AS803 77 33 44 57.1% SaskNet Backbone AS3221 86 43 43 50.0% RIPE-ASNBLOCK4 AS1221 345 302 43 12.5% AARNET-AS AS10928 92 49 43 46.7% UNKNOWN AS852 166 125 41 24.7% AGT Advance Communication AS7122 121 80 41 33.9% MTS ADVANCED Network Policy AS3804 182 143 39 21.4% Bell Solutions AS6181 64 30 34 53.1% FUSE-NET AS4539 66 32 34 51.5% NETROPOLIS AS2707 65 32 33 50.8% WEC AS7496 66 34 32 48.5% APNIC-AS-2-BLOCK AS4307 32 1 31 96.9% SVINET-1 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

1 0

The Cidr Report
by Tony Bates 30 Oct '98

30 Oct '98

This is an auto-generated mail on Fri Oct 30 12:00:00 PST 1998 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 30Oct98 0) General Status Table History ------------- Date Prefixes 241098 53540 251098 53536 251098 53530 261098 53995 271098 53565 281098 53597 291098 53550 301098 53608 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: 4166 Number of ASes announcing only one prefix: 2015 (1071 cidr, 944 classful) Largest number of cidr routes: 615 announced by AS3561 Largest number of classful routes: 943 announced by AS701 1) Gains by aggregating at the origin AS level --- 30Oct98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 351 149 202 57.5% BCNET-AS AS1785 605 410 195 32.2% NYSERNet Backbone AS4293 414 239 175 42.3% IMCI AS3749 232 72 160 69.0% TECNET AS2493 349 197 152 43.6% iSTAR Internet, Inc. AS174 690 560 130 18.8% Performance Systems International AS701 943 814 129 13.7% Alternet AS4200 190 98 92 48.4% AGIS (Apex Global Information Ser AS5668 126 42 84 66.7% Century Telephone Inc. AS7046 272 195 77 28.3% UUNET-CUSTOMER AS3221 118 44 74 62.7% EENet Autonomous System AS4755 127 62 65 51.2% Videsh Sanchar Nigam Ltd. India AS4740 399 334 65 16.3% Ozemail Pty Ltd (ASN-OZEMAIL) AS7545 117 63 54 46.2% APNIC-AS-2-BLOCK AS8517 125 72 53 42.4% ULAKNET-ASN AS6335 71 19 52 73.2% NTRNET AS549 197 147 50 25.4% ONET-AS AS72 89 41 48 53.9% Schlumberger Information Network AS1239 523 476 47 9.0% SprintLink Backbone AS1221 362 315 47 13.0% AARNET-AS AS803 77 33 44 57.1% SASK-NET-AS AS852 166 125 41 24.7% CANET-ASN AS7122 123 82 41 33.3% MTS ADVANCED Network Policy AS4539 68 28 40 58.8% NETROPOLIS AS3804 189 149 40 21.2% WORLDLINX AS10928 87 48 39 44.8% UNKNOWN AS6181 64 30 34 53.1% FUSE-NET AS7496 64 31 33 51.6% APNIC-AS-2-BLOCK AS2707 65 32 33 50.8% WEC AS4307 32 1 31 96.9% SVINET-1 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

1 0

The Cidr Report
by Tony Bates 23 Oct '98

23 Oct '98

This is an auto-generated mail on Fri Oct 23 12:00:00 PDT 1998 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 23Oct98 0) General Status Table History ------------- Date Prefixes 161098 53167 171098 53211 181098 53097 191098 53201 201098 54125 211098 53433 221098 53407 231098 53585 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: 4133 Number of ASes announcing only one prefix: 2007 (1066 cidr, 941 classful) Largest number of cidr routes: 344 announced by AS3561 Largest number of classful routes: 944 announced by AS701 1) Gains by aggregating at the origin AS level --- 23Oct98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1785 654 397 257 39.3% NYSERNet Backbone AS271 355 153 202 56.9% BCnet Backbone AS4293 413 240 173 41.9% IMCI AS3749 232 72 160 69.0% TECNET AS2493 349 197 152 43.6% iSTAR Internet, Inc. AS3857 332 184 148 44.6% Internet Connect, Inc. AS701 944 815 129 13.7% Alternet AS174 690 561 129 18.7% Performance Systems International AS4200 191 98 93 48.7% AGIS (Apex Global Information Ser AS5668 128 41 87 68.0% Century Telephone Inc. AS7046 268 188 80 29.9% UUNET-CUSTOMER AS3221 118 44 74 62.7% EENet Autonomous System AS3804 229 156 73 31.9% Bell Solutions AS4755 120 55 65 54.2% Videsh Sanchar Nigam Ltd. India AS4740 395 331 64 16.2% Ozemail Pty Ltd (ASN-OZEMAIL) AS8517 125 72 53 42.4% ULAKNET-ASN AS7545 116 64 52 44.8% TPG Internet Pty Ltd AS6335 71 19 52 73.2% NTRNET AS549 195 146 49 25.1% ONet Backbone AS72 87 39 48 55.2% Schlumberger Information Network AS1239 538 491 47 8.7% SprintLink Backbone AS1221 361 315 46 12.7% AARNET-AS AS803 77 33 44 57.1% SaskNet Backbone AS3790 61 17 44 72.1% RACSANET AS7122 130 87 43 33.1% MTS ADVANCED Network Policy AS852 167 126 41 24.6% AGT Advance Communication AS4539 68 28 40 58.8% NETROPOLIS AS10928 88 49 39 44.3% UNKNOWN AS6181 64 30 34 53.1% FUSE-NET AS2707 64 31 33 51.6% WEC 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

1 0

The Cidr Report
by Tony Bates 16 Oct '98

16 Oct '98

This is an auto-generated mail on Fri Oct 16 12:00:00 PDT 1998 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 16Oct98 0) General Status Table History ------------- Date Prefixes 091098 52585 101098 52353 111098 52340 121098 52520 131098 52587 141098 52544 151098 52663 161098 53167 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: 4110 Number of ASes announcing only one prefix: 1971 (1039 cidr, 932 classful) Largest number of cidr routes: 343 announced by AS3561 Largest number of classful routes: 942 announced by AS701 1) Gains by aggregating at the origin AS level --- 16Oct98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1785 668 390 278 41.6% NYSERNet Backbone AS271 346 149 197 56.9% BCnet Backbone AS4293 420 247 173 41.2% IMCI AS3749 229 71 158 69.0% TECNET AS2493 356 202 154 43.3% iSTAR Internet, Inc. AS174 696 563 133 19.1% Performance Systems International AS701 942 815 127 13.5% Alternet AS4200 191 98 93 48.7% AGIS (Apex Global Information Ser AS5668 129 42 87 67.4% Century Telephone Inc. AS7046 262 187 75 28.6% UUNET-CUSTOMER AS3221 118 44 74 62.7% EENet Autonomous System AS3804 228 155 73 32.0% Bell Solutions AS4755 120 55 65 54.2% Videsh Sanchar Nigam Ltd. India AS4740 400 336 64 16.0% Ozemail Pty Ltd (ASN-OZEMAIL) AS8517 126 73 53 42.1% ULAKNET-ASN AS7545 116 64 52 44.8% TPG Internet Pty Ltd AS6335 71 19 52 73.2% NTRNET AS72 87 39 48 55.2% Schlumberger Information Network AS549 194 147 47 24.2% ONet Backbone AS1239 538 491 47 8.7% SprintLink Backbone AS1221 360 314 46 12.8% AARNET-AS AS803 77 33 44 57.1% SaskNet Backbone AS852 165 124 41 24.8% AGT Advance Communication AS7122 123 83 40 32.5% MTS ADVANCED Network Policy AS4539 68 28 40 58.8% NETROPOLIS AS10928 87 48 39 44.8% UNKNOWN AS6181 64 30 34 53.1% FUSE-NET AS2707 64 31 33 51.6% WEC AS7496 66 35 31 47.0% Power Up AS3564 65 34 31 47.7% Microserve Infromation Systems In 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

1 0