The Cidr Report
Tony Bates
tbates at cisco.com
Fri Oct 24 19:00:01 UTC 1997
This is an auto-generated mail on Fri Oct 24 12:00:00 PDT 1997
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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 24Oct97
0) General Status
Table History
-------------
Date Prefixes
171097 46329
181097 46308
191097 46343
201097 46215
211097 46566
221097 46192
231097 46291
241097 46322
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: 2794
Number of ASes announcing only one prefix: 1261 (669 cidr, 592 classful)
Largest number of cidr routes: 453 announced by AS3561
Largest number of classful routes: 946 announced by AS3561
1) Gains by aggregating at the origin AS level
--- 24Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 816 466 350 42.9% iSTAR Internet, Inc.
AS3602 529 307 222 42.0% Sprint Canada Inc.
AS174 853 660 193 22.6% Performance Systems International
AS4293 367 175 192 52.3% IMCI
AS816 506 352 154 30.4% UUNET Canada (ASN-UUNETCA-AS4)
AS719 687 559 128 18.6% LANLINK autonomous system
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 169 75 94 55.6% Videotron Telecom Ltee
AS701 931 854 77 8.3% Alternet
AS2704 257 180 77 30.0% HOOKUP-NET-A
AS1967 137 65 72 52.6% Middle East Technical University
AS2048 158 90 68 43.0% LaNet
AS3804 201 137 64 31.8% Bell Solutions
AS4648 207 147 60 29.0% NZIX 2
AS1239 619 560 59 9.5% SprintLink Backbone
AS5668 92 34 58 63.0% Century Telephone Inc.
AS1221 388 332 56 14.4% AARNET-AS
AS72 84 30 54 64.3% Schlumberger Information Network
AS3464 117 63 54 46.2% ASC-NET
AS1 893 840 53 5.9% BBNPLANET
AS549 215 165 50 23.3% ONet Backbone
AS4747 123 75 48 39.0% Taiwan Telecommunication Network
AS4763 112 65 47 42.0% Telstra New Zealand
AS271 107 60 47 43.9% BCnet Backbone
AS3561 946 900 46 4.9% MCI
AS7545 119 76 43 36.1% TPG Internet Pty Ltd
AS2711 96 57 39 40.6% SUNBELT-AS
AS6412 48 12 36 75.0% Gulfnet International
AS4755 63 27 36 57.1% Videsh Sanchar Nigam Ltd. India
AS1691 158 122 36 22.8% BCTEL
--- 23Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 842 481 361 42.9% UNKNOWN
AS174 938 716 222 23.7% UNKNOWN
AS3602 523 308 215 41.1% UNKNOWN
AS4293 363 176 187 51.5% UNKNOWN
AS816 500 350 150 30.0% UNKNOWN
AS719 688 560 128 18.6% UNKNOWN
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 168 74 94 56.0% UNKNOWN
AS701 934 855 79 8.5% UNKNOWN
AS2704 255 180 75 29.4% UNKNOWN
AS1967 135 64 71 52.6% Middle East Technical University
AS2048 158 92 66 41.8% UNKNOWN
AS5668 92 31 61 66.3% Century Telephone Inc.
AS4648 208 148 60 28.8% UNKNOWN
AS1239 614 555 59 9.6% UNKNOWN
AS1221 387 331 56 14.5% UNKNOWN
AS72 83 29 54 65.1% Schlumberger Information Network
AS3464 117 63 54 46.2% ASC-NET
AS1 894 841 53 5.9% UNKNOWN
AS549 221 170 51 23.1% UNKNOWN
AS4747 122 74 48 39.3% Taiwan Telecommunication Network
AS3561 953 905 48 5.0% UNKNOWN
AS4763 112 65 47 42.0% Telstra New Zealand
AS271 107 60 47 43.9% BCnet Backbone
AS721 355 311 44 12.4% UNKNOWN
AS7545 120 78 42 35.0% TPG Internet Pty Ltd
AS2711 96 57 39 40.6% SUNBELT-AS
AS6412 48 12 36 75.0% Gulfnet International
AS4755 62 26 36 58.1% Videsh Sanchar Nigam Ltd. India
AS1691 158 122 36 22.8% BCTEL
--- 22Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS174 936 713 223 23.8% Performance Systems International
AS2493 477 335 142 29.8% iSTAR Internet, Inc.
AS3602 368 242 126 34.2% Sprint Canada Inc.
AS816 438 315 123 28.1% UUNET Canada (ASN-UUNETCA-AS4)
AS4293 227 128 99 43.6% IMCI
AS839 123 31 92 74.8% CANET-ASN
AS2704 247 175 72 29.1% HOOKUP-NET-A
AS2048 160 91 69 43.1% LaNet
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS701 856 803 53 6.2% Alternet
AS1 895 842 53 5.9% BBNPLANET
AS3464 117 66 51 43.6% ASC-NET
AS4763 104 60 44 42.3% Telstra New Zealand
AS4747 100 56 44 44.0% Taiwan Telecommunication Network
AS719 499 459 40 8.0% LANLINK autonomous system
AS271 88 54 34 38.6% BCNET-AS
AS4200 103 76 27 26.2% AGIS (Apex Global Information Ser
AS278 78 52 26 33.3% Academic Network of Mexico, UNAM.
AS3404 79 54 25 31.6% COLORADOCOOP
AS1761 48 23 25 52.1% Texas Dept. of Information Resour
AS1239 511 486 25 4.9% SprintLink Backbone
AS3566 42 19 23 54.8% JRIVER-LINK
AS2764 366 343 23 6.3% connect.com.au pty ltd
AS7051 31 9 22 71.0% Secure Network Systems
AS5381 58 36 22 37.9% PowerTech Information Systems AS
AS6392 42 21 21 50.0% MidWest Communications, Inc.
AS5589 58 37 21 36.2% Telecom Finland iNET, Belgium
AS2907 176 155 21 11.9% SINET
AS4057 40 20 20 50.0% I2020
--- 21Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 837 483 354 42.3% iSTAR Internet, Inc.
AS174 931 710 221 23.7% Performance Systems International
AS3602 524 310 214 40.8% Sprint Canada Inc.
AS4293 363 176 187 51.5% IMCI
AS816 498 347 151 30.3% UUNET Canada (ASN-UUNETCA-AS4)
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 166 77 89 53.6% Videotron Telecom Ltee
AS701 988 901 87 8.8% Alternet
AS2704 255 180 75 29.4% HOOKUP-NET-A
AS1967 135 64 71 52.6% Middle East Technical University
AS2048 160 91 69 43.1% LaNet
AS4648 206 146 60 29.1% NZIX 2
AS1239 617 558 59 9.6% SprintLink Backbone
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS3464 117 63 54 46.2% ASC-NET
AS1 895 842 53 5.9% BBNPLANET
AS4747 122 74 48 39.3% Taiwan Telecommunication Network
AS4763 112 65 47 42.0% Telstra New Zealand
AS3561 946 899 47 5.0% MCI
AS271 100 55 45 45.0% BCnet Backbone
AS721 352 309 43 12.2% DLA-ASNBLOCK-AS
AS719 533 490 43 8.1% LANLINK autonomous system
AS2711 96 57 39 40.6% SUNBELT-AS
AS7545 116 78 38 32.8% TPG Internet Pty Ltd
AS6412 48 12 36 75.0% Gulfnet International
AS1691 158 122 36 22.8% BCTEL
AS4200 124 90 34 27.4% AGIS (Apex Global Information Ser
AS376 98 64 34 34.7% RISQ
AS3564 61 27 34 55.7% Microserve Infromation Systems In
--- 20Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 833 481 352 42.3% iSTAR Internet, Inc.
AS3602 530 314 216 40.8% Sprint Canada Inc.
AS174 918 703 215 23.4% Performance Systems International
AS816 500 347 153 30.6% UUNET Canada (ASN-UUNETCA-AS4)
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 166 77 89 53.6% Videotron Telecom Ltee
AS701 992 905 87 8.8% Alternet
AS4293 161 78 83 51.6% IMCI
AS2704 255 180 75 29.4% HOOKUP-NET-A
AS2048 160 89 71 44.4% LaNet
AS1967 135 64 71 52.6% Middle East Technical University
AS3804 201 137 64 31.8% Bell Solutions
AS5668 87 27 60 69.0% Century Telephone Inc.
AS4648 207 147 60 29.0% NZIX 2
AS1239 613 554 59 9.6% SprintLink Backbone
AS719 584 526 58 9.9% LANLINK autonomous system
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS3464 117 63 54 46.2% ASC-NET
AS1 891 838 53 5.9% BBNPLANET
AS549 222 174 48 21.6% ONet Backbone
AS4747 122 74 48 39.3% Taiwan Telecommunication Network
AS4763 112 65 47 42.0% Telstra New Zealand
AS3561 918 871 47 5.1% MCI
AS271 101 56 45 44.6% BCnet Backbone
AS721 346 303 43 12.4% DLA-ASNBLOCK-AS
AS2711 96 57 39 40.6% SUNBELT-AS
AS7545 115 77 38 33.0% TPG Internet Pty Ltd
AS6412 48 12 36 75.0% Gulfnet International
AS1691 158 122 36 22.8% BCTEL
--- 19Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 830 479 351 42.3% iSTAR Internet, Inc.
AS174 925 704 221 23.9% Performance Systems International
AS3602 530 314 216 40.8% Sprint Canada Inc.
AS4293 361 174 187 51.8% IMCI
AS816 496 345 151 30.4% UUNET Canada (ASN-UUNETCA-AS4)
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 166 77 89 53.6% Videotron Telecom Ltee
AS701 994 907 87 8.8% Alternet
AS2704 255 180 75 29.4% HOOKUP-NET-A
AS1967 135 64 71 52.6% Middle East Technical University
AS2048 159 90 69 43.4% LaNet
AS3804 201 137 64 31.8% Bell Solutions
AS5668 87 27 60 69.0% Century Telephone Inc.
AS4648 205 146 59 28.8% NZIX 2
AS1239 609 550 59 9.7% SprintLink Backbone
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS719 573 519 54 9.4% LANLINK autonomous system
AS3464 117 63 54 46.2% ASC-NET
AS1 894 841 53 5.9% BBNPLANET
AS549 222 174 48 21.6% ONet Backbone
AS4747 121 73 48 39.7% Taiwan Telecommunication Network
AS3561 944 896 48 5.1% MCI
AS4763 112 65 47 42.0% Telstra New Zealand
AS271 100 55 45 45.0% BCnet Backbone
AS721 344 301 43 12.5% DLA-ASNBLOCK-AS
AS2711 96 57 39 40.6% SUNBELT-AS
AS7545 114 76 38 33.3% TPG Internet Pty Ltd
AS852 151 115 36 23.8% AGT Advance Communication
AS6412 48 12 36 75.0% Gulfnet International
--- 18Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 831 480 351 42.2% iSTAR Internet, Inc.
AS174 929 705 224 24.1% Performance Systems International
AS3602 530 314 216 40.8% Sprint Canada Inc.
AS4293 359 176 183 51.0% IMCI
AS816 501 347 154 30.7% UUNET Canada (ASN-UUNETCA-AS4)
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 166 77 89 53.6% Le Groupe Videotron Ltee
AS701 993 906 87 8.8% Alternet
AS2704 257 181 76 29.6% HOOKUP-NET-A
AS1967 135 64 71 52.6% Middle East Technical University
AS2048 159 90 69 43.4% LaNet
AS3804 201 137 64 31.8% Bell Solutions
AS5668 87 27 60 69.0% Century Telephone Inc.
AS4648 206 146 60 29.1% NZIX 2
AS1239 603 545 58 9.6% SprintLink Backbone
AS719 583 526 57 9.8% LANLINK autonomous system
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS3464 117 63 54 46.2% ASC-NET
AS1 890 838 52 5.8% BBNPLANET
AS3561 945 897 48 5.1% MCI
AS4763 112 65 47 42.0% Telstra New Zealand
AS549 218 172 46 21.1% ONet Backbone
AS4747 117 71 46 39.3% Taiwan Telecommunication Network
AS271 100 55 45 45.0% BCnet Backbone
AS721 344 301 43 12.5% DLA-ASNBLOCK-AS
AS2711 96 57 39 40.6% SUNBELT-AS
AS7545 114 76 38 33.3% TPG Internet Pty Ltd
AS852 151 115 36 23.8% AGT Advance Communication
AS6412 48 12 36 75.0% Gulfnet International
--- 17Oct97 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2493 830 479 351 42.3% iSTAR Internet, Inc.
AS174 934 711 223 23.9% Performance Systems International
AS3602 529 315 214 40.5% Sprint Canada Inc.
AS4293 362 175 187 51.7% IMCI
AS816 496 347 149 30.0% UUNET Canada (ASN-UUNETCA-AS4)
AS839 124 27 97 78.2% North West Territories Regional N
AS5769 165 76 89 53.9% Le Groupe Videotron Ltee
AS701 978 893 85 8.7% Alternet
AS2704 245 173 72 29.4% HOOKUP-NET-A
AS1967 135 64 71 52.6% Middle East Technical University
AS2048 159 90 69 43.4% LaNet
AS5668 88 23 65 73.9% Century Telephone Inc.
AS3804 201 137 64 31.8% Bell Solutions
AS4648 207 147 60 29.0% NZIX 2
AS1239 613 554 59 9.6% SprintLink Backbone
AS719 583 526 57 9.8% LANLINK autonomous system
AS1221 387 331 56 14.5% AARNET-AS
AS72 83 29 54 65.1% Schlumberger Information Network
AS3464 116 64 52 44.8% ASC-NET
AS1 890 838 52 5.8% BBNPLANET
AS549 222 172 50 22.5% ONet Backbone
AS4763 112 65 47 42.0% Telstra New Zealand
AS3561 938 891 47 5.0% MCI
AS4747 118 72 46 39.0% Taiwan Telecommunication Network
AS271 101 56 45 44.6% BCnet Backbone
AS721 344 301 43 12.5% DLA-ASNBLOCK-AS
AS2711 96 57 39 40.6% SUNBELT-AS
AS7545 114 76 38 33.3% TPG Internet Pty Ltd
AS1691 159 122 37 23.3% BCTEL
AS852 151 115 36 23.8% AGT Advance Communication
2) Weekly Delta
This a daily snapshot of changes in classful routes being withdrawn and added.
the deltas are calculated over a rolling 7 day period. Please bear in mind this
is purely a "snapshot" and a large flucuation could be caused by a connectivity
problem for example. However, this does give some indication of service
providers that are moving to classless routing.
Top 20 Withdrawn Classful Routes from 17Oct97 to 24Oct97
-132 AS721 DLA-ASNBLOCK-AS
-81 AS174 Performance Systems International
-48 AS724 DLA-ASNBLOCK-AS
-47 AS701 Alternet
-42 AS400 AFCONC-BLOCK1-AS
-31 AS7051 Secure Network Systems
-23 AS1461 UNKNOWN
-22 AS6401 eConnect
-21 AS6595 DODDSEUR
-15 AS4200 AGIS (Apex Global Information Ser
-14 AS2493 iSTAR Internet, Inc.
-13 AS568 JIS (Joint Interconnection Servic
-12 AS2548 DIGEX-AS
-10 AS3563 Pilot Network Services, Inc.
-9 AS450 AFCONC-BLOCK1-AS
-8 AS6357 DBTECH
-7 AS549 ONet Backbone
-6 AS1564 UNKNOWN
-5 AS3527 NIH-NET
-4 AS2012 ELTENET
Top 20 Added Classful Routes from 17Oct97 to 24Oct97
106 AS2764 connect.com.au pty ltd
104 AS719 LANLINK autonomous system
63 AS4778 AUNET Corp.
44 AS4786 Ballarat NetConnect Pty Ltd
12 AS2704 HOOKUP-NET-A
11 AS2592 E.U. BAUM, Izmir, TURKIYE
10 AS802 York University
9 AS1251 ANBR-AS
8 AS3561 MCI
6 AS271 BCnet Backbone
5 AS4747 Taiwan Telecommunication Network
4 AS5668 Century Telephone Inc.
3 AS6140 ImpSat Corp
2 AS3354 THENET-AS-1
1 AS4805 Global IP
This a daily snapshot of changes in classles routes being withdrawn and added.
Top 20 Withdrawn Classles Routes from 17Oct97 to 24Oct97
-39 AS3336 Internet Services, Kolumbus proje
-16 AS568 JIS (Joint Interconnection Servic
-11 AS5074 ATT-WN-DP
-8 AS701 Alternet
-6 AS4780 INSTITUTE FOR INFORMATION INDUSTR
-5 AS4694 International Digital Communicati
-4 AS4433 Access One Pty Ltd (ASN-ACCESS-ON
-3 AS3763 Aimnet Corporation
-2 AS2563 KoRea Education Network
-1 AS2707 WEC
Top 20 Added Classles Routes from 17Oct97 to 24Oct97
54 AS7777 VIX2
27 AS174 Performance Systems International
19 AS2764 connect.com.au pty ltd
16 AS4778 AUNET Corp.
9 AS5006 Minnesota Internet eXchange
8 AS1333 ANS Atlanta - DNSS 107
7 AS3561 MCI
6 AS3758 SINGNET
5 AS2493 iSTAR Internet, Inc.
4 AS2871 Internet Services GmbH & Co
3 AS5408 Greek Research and Technology Net
2 AS6772 SUPERNOVA AS
1 AS3393 Computing Engineers
3) Interesting aggregates
List of possibly interesting aggregates
---------------------------------------
Aggregate | Origin | AS Description | Netname
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