- routing-wg - mailman.ripe.net

The Cidr Report
by Tony Bates 24 Apr '98

24 Apr '98

This is an auto-generated mail on Fri Apr 24 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 24Apr98 0) General Status Table History ------------- Date Prefixes 170498 51188 180498 51220 190498 51064 200498 51247 210498 51425 220498 51496 230498 51401 240498 51504 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: 3488 Number of ASes announcing only one prefix: 1659 (861 cidr, 798 classful) Largest number of cidr routes: 376 announced by AS3561 Largest number of classful routes: 1115 announced by AS701 1) Gains by aggregating at the origin AS level --- 24Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 657 413 244 37.1% iSTAR Internet, Inc. AS4293 441 217 224 50.8% IMCI AS816 670 461 209 31.2% UUNET Canada (ASN-UUNETCA-AS4) AS701 1115 939 176 15.8% Alternet AS3602 469 306 163 34.8% Sprint Canada Inc. AS3749 219 64 155 70.8% TECNET AS174 750 601 149 19.9% Performance Systems International AS8505 156 30 126 80.8% Middle East Technical University AS7046 253 149 104 41.1% UUNET-CUSTOMER AS5668 119 45 74 62.2% Century Telephone Inc. AS2048 162 90 72 44.4% LaNet AS3221 110 41 69 62.7% EENet Autonomous System AS4755 97 29 68 70.1% Videsh Sanchar Nigam Ltd. India AS11003 127 59 68 53.5% UNKNOWN AS10928 104 44 60 57.7% UNKNOWN AS271 111 52 59 53.2% BCnet Backbone AS3804 200 142 58 29.0% Bell Solutions AS4313 67 14 53 79.1% DELTANET AS549 209 159 50 23.9% ONet Backbone AS1239 541 492 49 9.1% SprintLink Backbone AS72 84 36 48 57.1% Schlumberger Information Network AS1221 275 227 48 17.5% AARNET-AS AS6392 80 33 47 58.8% MidWest Communications, Inc. AS4763 123 76 47 38.2% Telstra New Zealand AS684 94 52 42 44.7% Manitoba Regional Network Backbon AS852 157 117 40 25.5% AGT Advance Communication AS4740 353 314 39 11.0% ASN-OZEMAIL (Ozemail Pty Ltd) AS3493 164 126 38 23.2% INTERLINK AS4200 129 92 37 28.7% AGIS (Apex Global Information Ser AS803 72 36 36 50.0% SaskNet Backbone 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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The Cidr Report
by Tony Bates 17 Apr '98

17 Apr '98

This is an auto-generated mail on Fri Apr 17 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 17Apr98 0) General Status Table History ------------- Date Prefixes 100498 50729 110498 50709 120498 50690 130498 50676 140498 51036 150498 51181 160498 50874 170498 51188 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: 3462 Number of ASes announcing only one prefix: 1628 (850 cidr, 778 classful) Largest number of cidr routes: 378 announced by AS3561 Largest number of classful routes: 1088 announced by AS701 1) Gains by aggregating at the origin AS level --- 17Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 438 216 222 50.7% IMCI AS2493 560 344 216 38.6% iSTAR Internet, Inc. AS816 666 454 212 31.8% UUNET Canada (ASN-UUNETCA-AS4) AS3602 468 300 168 35.9% Sprint Canada Inc. AS701 1088 924 164 15.1% Alternet AS174 786 624 162 20.6% Performance Systems International AS3749 216 71 145 67.1% TECNET AS8505 155 34 121 78.1% Middle East Technical University AS7046 234 134 100 42.7% UUNET-CUSTOMER AS5668 118 44 74 62.7% Century Telephone Inc. AS2048 162 90 72 44.4% LaNet AS11003 129 57 72 55.8% UNKNOWN AS3221 110 41 69 62.7% EENet Autonomous System AS4755 91 28 63 69.2% Videsh Sanchar Nigam Ltd. India AS271 111 52 59 53.2% BCnet Backbone AS3804 200 142 58 29.0% Bell Solutions AS10928 100 42 58 58.0% UNKNOWN AS549 209 158 51 24.4% ONet Backbone AS1239 541 491 50 9.2% SprintLink Backbone AS72 84 36 48 57.1% Schlumberger Information Network AS6392 79 32 47 59.5% MidWest Communications, Inc. AS4763 123 76 47 38.2% Telstra New Zealand AS1221 286 239 47 16.4% AARNET-AS AS4740 356 313 43 12.1% ASN-OZEMAIL (Ozemail Pty Ltd) AS1982 162 119 43 26.5% Northwest Nexus, Inc. AS852 157 117 40 25.5% AGT Advance Communication AS684 94 54 40 42.6% Manitoba Regional Network Backbon AS4200 132 94 38 28.8% AGIS (Apex Global Information Ser AS3493 164 126 38 23.2% INTERLINK AS6335 63 27 36 57.1% NTRNET 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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The Cidr Report
by Tony Bates 10 Apr '98

10 Apr '98

This is an auto-generated mail on Fri Apr 10 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 10Apr98 0) General Status Table History ------------- Date Prefixes 030498 50479 040498 50660 050498 50519 060498 50595 070498 50748 080498 50724 090498 50529 100498 50729 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: 3448 Number of ASes announcing only one prefix: 1614 (846 cidr, 768 classful) Largest number of cidr routes: 412 announced by AS3561 Largest number of classful routes: 1036 announced by AS701 1) Gains by aggregating at the origin AS level --- 10Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 437 213 224 51.3% IMCI AS2493 553 338 215 38.9% iSTAR Internet, Inc. AS816 672 461 211 31.4% UUNET Canada (ASN-UUNETCA-AS4) AS3602 467 302 165 35.3% Sprint Canada Inc. AS174 774 617 157 20.3% Performance Systems International AS701 1036 881 155 15.0% Alternet AS3749 218 63 155 71.1% TECNET AS8505 154 34 120 77.9% Middle East Technical University AS2939 186 77 109 58.6% SCAROLINA-AS AS2048 162 90 72 44.4% LaNet AS11003 126 56 70 55.6% UNKNOWN AS5668 116 47 69 59.5% Century Telephone Inc. AS3221 107 39 68 63.6% EENet Autonomous System AS271 112 53 59 52.7% BCnet Backbone AS3804 199 141 58 29.1% Bell Solutions AS10928 99 41 58 58.6% UNKNOWN AS549 209 159 50 23.9% ONet Backbone AS1239 538 488 50 9.3% SprintLink Backbone AS1221 272 223 49 18.0% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS4755 85 37 48 56.5% Videsh Sanchar Nigam Ltd. India AS6392 79 32 47 59.5% MidWest Communications, Inc. AS7046 154 108 46 29.9% UUNET-CUSTOMER AS4763 122 76 46 37.7% Telstra New Zealand AS1982 161 118 43 26.7% Northwest Nexus, Inc. AS4740 351 309 42 12.0% ASN-OZEMAIL (Ozemail Pty Ltd) AS852 157 117 40 25.5% AGT Advance Communication AS684 92 52 40 43.5% Manitoba Regional Network Backbon AS4200 134 95 39 29.1% AGIS (Apex Global Information Ser AS3493 164 126 38 23.2% INTERLINK 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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The Cidr Report
by Tony Bates 03 Apr '98

03 Apr '98

This is an auto-generated mail on Fri Apr 3 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 03Apr98 0) General Status Table History ------------- Date Prefixes 270398 50071 280398 50139 290398 50082 300398 50063 310398 50599 010498 50557 020498 50527 030498 50479 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: 3404 Number of ASes announcing only one prefix: 1599 (840 cidr, 759 classful) Largest number of cidr routes: 418 announced by AS3561 Largest number of classful routes: 1043 announced by AS701 1) Gains by aggregating at the origin AS level --- 03Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 436 211 225 51.6% IMCI AS816 666 456 210 31.5% UUNET Canada (ASN-UUNETCA-AS4) AS2493 521 339 182 34.9% iSTAR Internet, Inc. AS3602 463 299 164 35.4% Sprint Canada Inc. AS174 778 619 159 20.4% Performance Systems International AS701 1043 887 156 15.0% Alternet AS3749 219 64 155 70.8% TECNET AS5668 117 45 72 61.5% Century Telephone Inc. AS11003 128 56 72 56.2% UNKNOWN AS3221 106 38 68 64.2% EENet Autonomous System AS2048 150 87 63 42.0% LaNet AS3804 202 142 60 29.7% Bell Solutions AS10928 100 42 58 58.0% UNKNOWN AS1239 550 493 57 10.4% SprintLink Backbone AS271 109 54 55 50.5% BCnet Backbone AS549 211 160 51 24.2% ONet Backbone AS1221 270 221 49 18.1% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS6392 79 32 47 59.5% MidWest Communications, Inc. AS4763 122 76 46 37.7% Telstra New Zealand AS7046 150 106 44 29.3% UUNET-CUSTOMER AS4740 355 312 43 12.1% ASN-OZEMAIL (Ozemail Pty Ltd) AS4755 82 40 42 51.2% Videsh Sanchar Nigam Ltd. India AS2711 98 56 42 42.9% SUNBELT-AS AS1982 157 115 42 26.8% Northwest Nexus, Inc. AS852 156 116 40 25.6% AGT Advance Communication AS684 91 52 39 42.9% Manitoba Regional Network Backbon AS4200 132 93 39 29.5% AGIS (Apex Global Information Ser AS3493 161 123 38 23.6% INTERLINK AS6335 63 27 36 57.1% NTRNET 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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The Cidr Report
by Tony Bates 27 Mar '98

27 Mar '98

This is an auto-generated mail on Fri Mar 27 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 27Mar98 0) General Status Table History ------------- Date Prefixes 200398 49893 210398 50064 220398 50031 230398 49930 240398 49998 250398 50244 260398 49981 270398 50071 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: 3371 Number of ASes announcing only one prefix: 1596 (826 cidr, 770 classful) Largest number of cidr routes: 418 announced by AS3561 Largest number of classful routes: 1039 announced by AS701 1) Gains by aggregating at the origin AS level --- 27Mar98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 437 213 224 51.3% IMCI AS2493 560 343 217 38.8% iSTAR Internet, Inc. AS816 653 448 205 31.4% UUNET Canada (ASN-UUNETCA-AS4) AS3602 465 300 165 35.5% Sprint Canada Inc. AS174 786 627 159 20.2% Performance Systems International AS3749 219 64 155 70.8% TECNET AS701 1039 885 154 14.8% Alternet AS11003 128 56 72 56.2% UNKNOWN AS5668 113 42 71 62.8% Century Telephone Inc. AS2048 160 92 68 42.5% LaNet AS3221 102 37 65 63.7% EENet Autonomous System AS3804 205 142 63 30.7% Bell Solutions AS1239 550 493 57 10.4% SprintLink Backbone AS271 110 54 56 50.9% BCnet Backbone AS10928 98 43 55 56.1% UNKNOWN AS549 211 160 51 24.2% ONet Backbone AS4755 84 34 50 59.5% Videsh Sanchar Nigam Ltd. India AS1221 272 223 49 18.0% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS4763 122 76 46 37.7% Telstra New Zealand AS7046 146 102 44 30.1% UUNET-CUSTOMER AS6392 73 29 44 60.3% MidWest Communications, Inc. AS4740 355 313 42 11.8% ASN-OZEMAIL (Ozemail Pty Ltd) AS2711 98 56 42 42.9% SUNBELT-AS AS852 157 117 40 25.5% AGT Advance Communication AS6335 63 23 40 63.5% NTRNET AS3493 162 124 38 23.5% INTERLINK AS684 90 53 37 41.1% Manitoba Regional Network Backbon AS6332 83 46 37 44.6% TELNOR AS4200 127 90 37 29.1% AGIS (Apex Global Information Ser 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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25 Mar '98

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by launch＠LAUNCHMASTER.COM 25 Mar '98

25 Mar '98

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The Cidr Report
by Tony Bates 20 Mar '98

20 Mar '98

This is an auto-generated mail on Fri Mar 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 20Mar98 0) General Status Table History ------------- Date Prefixes 130398 51228 140398 51211 150398 50931 160398 50729 170398 49792 180398 49992 190398 49667 200398 49893 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: 3346 Number of ASes announcing only one prefix: 1576 (819 cidr, 757 classful) Largest number of cidr routes: 447 announced by AS3561 Largest number of classful routes: 1034 announced by AS701 1) Gains by aggregating at the origin AS level --- 20Mar98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description 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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The Cidr Report
by Tony Bates 13 Mar '98

13 Mar '98

This is an auto-generated mail on Fri Mar 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 13Mar98 0) General Status Table History ------------- Date Prefixes 060398 49432 070398 49627 080398 49377 090398 49596 100398 49567 110398 49538 120398 49727 130398 51228 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: 3331 Number of ASes announcing only one prefix: 1563 (810 cidr, 753 classful) Largest number of cidr routes: 1773 announced by AS3561 Largest number of classful routes: 1015 announced by AS701 1) Gains by aggregating at the origin AS level --- 13Mar98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 581 359 222 38.2% iSTAR Internet, Inc. AS4293 435 216 219 50.3% IMCI AS816 627 445 182 29.0% UUNET Canada (ASN-UUNETCA-AS4) AS174 805 643 162 20.1% Performance Systems International AS3749 218 63 155 71.1% TECNET AS3602 459 304 155 33.8% Sprint Canada Inc. AS701 1015 866 149 14.7% Alternet AS3751 125 48 77 61.6% SNET-AS AS5668 108 40 68 63.0% Century Telephone Inc. AS3804 205 142 63 30.7% Bell Solutions AS2048 154 91 63 40.9% LaNet AS3221 95 35 60 63.2% EENet Autonomous System AS1239 557 500 57 10.2% SprintLink Backbone AS271 111 55 56 50.5% BCnet Backbone AS10928 98 43 55 56.1% UNKNOWN AS4755 83 33 50 60.2% Videsh Sanchar Nigam Ltd. India AS72 84 36 48 57.1% Schlumberger Information Network AS1221 270 222 48 17.8% AARNET-AS AS549 208 161 47 22.6% ONet Backbone AS4763 122 76 46 37.7% Telstra New Zealand AS6181 70 25 45 64.3% FUSE-NET AS7046 140 96 44 31.4% UUNET-CUSTOMER AS3561 1004 961 43 4.3% MCI AS6335 64 22 42 65.6% NTRNET AS2711 97 55 42 43.3% SUNBELT-AS AS10722 73 31 42 57.5% Aluminum Co. of America AS4740 350 311 39 11.1% ASN-OZEMAIL (Ozemail Pty Ltd) AS3493 166 127 39 23.5% INTERLINK AS4200 128 90 38 29.7% AGIS (Apex Global Information Ser AS719 427 390 37 8.7% LANLINK autonomous system 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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The Cidr Report
by Tony Bates 06 Mar '98

06 Mar '98

This is an auto-generated mail on Fri Mar 6 12:00:01 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 06Mar98 0) General Status Table History ------------- Date Prefixes 270298 49830 280298 49218 010398 49211 020398 49301 030398 49206 040398 49095 050398 49430 060398 49432 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: 3301 Number of ASes announcing only one prefix: 1558 (805 cidr, 753 classful) Largest number of cidr routes: 430 announced by AS3561 Largest number of classful routes: 1012 announced by AS701 1) Gains by aggregating at the origin AS level --- 06Mar98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 583 360 223 38.3% iSTAR Internet, Inc. AS4293 431 222 209 48.5% IMCI AS816 615 440 175 28.5% UUNET Canada (ASN-UUNETCA-AS4) AS174 800 639 161 20.1% Performance Systems International AS3602 460 307 153 33.3% Sprint Canada Inc. AS3749 216 66 150 69.4% TECNET AS701 1012 863 149 14.7% Alternet AS8505 150 36 114 76.0% Middle East Technical University AS3751 125 48 77 61.6% SNET-AS AS5668 110 38 72 65.5% Century Telephone Inc. AS4151 122 56 66 54.1% USDA Internet Access Network AS3804 206 143 63 30.6% Bell Solutions AS3221 94 34 60 63.8% EENet Autonomous System AS1239 579 520 59 10.2% SprintLink Backbone AS271 112 56 56 50.0% BCnet Backbone AS10928 94 40 54 57.4% UNKNOWN AS3464 118 65 53 44.9% Alabama Research and Education Ne AS549 211 162 49 23.2% ONet Backbone AS4755 82 33 49 59.8% Videsh Sanchar Nigam Ltd. India AS72 84 36 48 57.1% Schlumberger Information Network AS1221 266 218 48 18.0% AARNET-AS AS4763 124 78 46 37.1% Telstra New Zealand AS7046 138 94 44 31.9% UUNET-CUSTOMER AS6181 67 23 44 65.7% FUSE-NET AS6335 64 22 42 65.6% NTRNET AS3561 888 846 42 4.7% MCI AS2711 97 55 42 43.3% SUNBELT-AS AS10722 73 31 42 57.5% Aluminum Co. of America AS4740 348 307 41 11.8% ASN-OZEMAIL (Ozemail Pty Ltd) AS852 154 115 39 25.3% AGT Advance Communication 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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