The Cidr Report - 4byte ASN handling
Schiller, Heather A
heather.schiller at verizon.com
Thu Sep 15 23:51:04 UTC 2011
I thought AS-plain notation was the standard for 4-byte ASN's? Also to cidr report folks, in the web version, clicking on the ASN for these takes you to the page for AS3 (MIT)
46.18.104.0/21 AS3.746
195.54.52.0/23 AS3.523
195.54.52.0/24 AS3.523
195.54.53.0/24 AS3.523
route-views>sh ip bgp 195.54.52.0
BGP routing table entry for 195.54.52.0/24, version 218523
Paths: (34 available, best #34, table Default-IP-Routing-Table)
Not advertised to any peer
3257 3356 3255 3.523 3.523 3.523
89.149.178.10 from 89.149.178.10 (213.200.87.91)
Origin IGP, metric 10, localpref 100, valid, external
Community: 3257:8091 3257:30042 3257:50001 3257:54900 3257:54901
-----Original Message-----
From: cidr-report at potaroo.net [mailto:cidr-report at potaroo.net]
Sent: Friday, September 09, 2011 6:00 PM
To: cidr-report at potaroo.net
Cc: apops at apops.net; afnog at afnog.org; nanog at nanog.org; eof-list at ripe.net; routing-wg at ripe.net
Subject: The Cidr Report
This report has been generated at Fri Sep 9 21:12:28 2011 AEST.
The report analyses the BGP Routing Table of AS2.0 router and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
02-09-11 373096 219901
03-09-11 373636 219796
04-09-11 373666 219877
05-09-11 373566 219844
06-09-11 373748 219894
07-09-11 373965 219992
08-09-11 373797 219481
09-09-11 373405 220098
AS Summary
38831 Number of ASes in routing system
16392 Number of ASes announcing only one prefix
3564 Largest number of prefixes announced by an AS
AS6389 : BELLSOUTH-NET-BLK - BellSouth.net Inc.
108360672 Largest address span announced by an AS (/32s)
AS4134 : CHINANET-BACKBONE No.31,Jin-rong Street
Aggregation Summary
The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes').
--- 09Sep11 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 374093 219958 154135 41.2% All ASes
AS6389 3564 229 3335 93.6% BELLSOUTH-NET-BLK -
BellSouth.net Inc.
AS4766 2508 974 1534 61.2% KIXS-AS-KR Korea Telecom
AS18566 1912 378 1534 80.2% COVAD - Covad Communications
Co.
AS22773 1451 108 1343 92.6% ASN-CXA-ALL-CCI-22773-RDC -
Cox Communications Inc.
AS4755 1547 228 1319 85.3% TATACOMM-AS TATA
Communications formerly VSNL
is Leading ISP
AS4323 1627 397 1230 75.6% TWTC - tw telecom holdings,
inc.
AS10620 1661 591 1070 64.4% Telmex Colombia S.A.
AS1785 1825 778 1047 57.4% AS-PAETEC-NET - PaeTec
Communications, Inc.
AS19262 1394 400 994 71.3% VZGNI-TRANSIT - Verizon Online
LLC
AS7552 1415 431 984 69.5% VIETEL-AS-AP Vietel
Corporation
AS28573 1302 344 958 73.6% NET Servicos de Comunicao S.A.
AS18101 950 144 806 84.8% RELIANCE-COMMUNICATIONS-IN
Reliance Communications
Ltd.DAKC MUMBAI
AS24560 1177 386 791 67.2% AIRTELBROADBAND-AS-AP Bharti
Airtel Ltd., Telemedia
Services
AS8151 1411 659 752 53.3% Uninet S.A. de C.V.
AS4808 1077 339 738 68.5% CHINA169-BJ CNCGROUP IP
network China169 Beijing
Province Network
AS7303 1051 316 735 69.9% Telecom Argentina S.A.
AS7545 1581 860 721 45.6% TPG-INTERNET-AP TPG Internet
Pty Ltd
AS3356 1103 449 654 59.3% LEVEL3 Level 3 Communications
AS30036 1327 692 635 47.9% MEDIACOM-ENTERPRISE-BUSINESS -
Mediacom Communications Corp
AS3549 1080 449 631 58.4% GBLX Global Crossing Ltd.
AS14420 715 92 623 87.1% CORPORACION NACIONAL DE
TELECOMUNICACIONES - CNT EP
AS20115 1591 971 620 39.0% CHARTER-NET-HKY-NC - Charter
Communications
AS22561 973 365 608 62.5% DIGITAL-TELEPORT - Digital
Teleport Inc.
AS17676 675 70 605 89.6% GIGAINFRA Softbank BB Corp.
AS17974 1985 1400 585 29.5% TELKOMNET-AS2-AP PT
Telekomunikasi Indonesia
AS4804 660 87 573 86.8% MPX-AS Microplex PTY LTD
AS22047 579 31 548 94.6% VTR BANDA ANCHA S.A.
AS4780 759 230 529 69.7% SEEDNET Digital United Inc.
AS7011 1183 656 527 44.5% FRONTIER-AND-CITIZENS -
Frontier Communications of
America, Inc.
AS15475 512 8 504 98.4% NOL
Total 40595 13062 27533 67.8% Top 30 total
Possible Bogus Routes
10.86.64.32/30 AS65530 -Private Use AS-
10.86.64.36/30 AS65530 -Private Use AS-
10.86.65.32/30 AS65530 -Private Use AS-
10.86.65.36/30 AS65530 -Private Use AS-
10.255.255.0/30 AS65530 -Private Use AS-
10.255.255.4/30 AS65530 -Private Use AS-
10.255.255.8/30 AS65530 -Private Use AS-
41.222.79.0/24 AS36938 AMSCOTELECOMS Amsco Telecommunications Nigeria Limited
41.223.92.0/22 AS36936 CELTEL-GABON Celtel Gabon Internet Service
46.18.104.0/21 AS3.746
62.61.220.0/24 AS24974 TACHYON-EU Tachyon Europe BV
62.61.221.0/24 AS24974 TACHYON-EU Tachyon Europe BV
64.21.192.0/20 AS11610 INETNEBR-1 - Internet Nebraska Corporation
64.21.212.0/22 AS11610 INETNEBR-1 - Internet Nebraska Corporation
64.21.216.0/21 AS11610 INETNEBR-1 - Internet Nebraska Corporation
66.171.32.0/20 AS705 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
66.180.239.0/24 AS35888 VIGNETTE - VIGNETTE CORPORATION
66.206.47.0/24 AS17557 PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
66.207.32.0/20 AS23011
66.245.176.0/20 AS19318 NJIIX-AS-1 - NEW JERSEY INTERNATIONAL INTERNET EXCHANGE LLC
69.6.80.0/24 AS13442
71.19.134.0/23 AS3313 INET-AS BT Italia S.p.A.
76.77.32.0/19 AS2828 XO-AS15 - XO Communications
80.88.10.0/24 AS33774 DJAWEB
100.100.100.0/24 AS3549 GBLX Global Crossing Ltd.
110.34.44.0/22 AS12653 COMTONET KB Impuls Hellas
116.206.72.0/24 AS6461 MFNX MFN - Metromedia Fiber Network
116.206.85.0/24 AS6461 MFNX MFN - Metromedia Fiber Network
116.206.103.0/24 AS6461 MFNX MFN - Metromedia Fiber Network
117.120.56.0/21 AS4755 TATACOMM-AS TATA Communications formerly VSNL is Leading ISP
121.46.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
142.54.0.0/19 AS23498 CDSI - Cogeco Data Services Inc.
172.102.0.0/22 AS4812 CHINANET-SH-AP China Telecom (Group)
181.82.15.0/24 AS23982 SENDB-AS-KR Dongbu District Office of Education in Seoul
181.82.16.0/24 AS23982 SENDB-AS-KR Dongbu District Office of Education in Seoul
181.82.17.0/24 AS38418 SENSD-AS-KR seoul seondong district office of education
181.82.18.0/24 AS38418 SENSD-AS-KR seoul seondong district office of education
190.102.32.0/20 AS30058 FDCSERVERS - FDCservers.net
190.104.32.0/21 AS27882 Telefónica Celular de Bolivia S.A.
193.111.87.0/24 AS24812
200.6.93.0/24 AS6400 Compañía Dominicana de Teléfonos, C. por A. - CODETEL
200.6.94.0/24 AS6400 Compañía Dominicana de Teléfonos, C. por A. - CODETEL
200.6.95.0/24 AS6400 Compañía Dominicana de Teléfonos, C. por A. - CODETEL
200.23.84.0/24 AS8151 Uninet S.A. de C.V.
200.24.73.0/24 AS26061 Equant Colombia
200.24.76.0/24 AS7195 Telecorp Colombia S.A.
200.24.78.0/26 AS3549 GBLX Global Crossing Ltd.
200.24.78.64/26 AS3549 GBLX Global Crossing Ltd.
200.33.40.0/24 AS11172 Alestra, S. de R.L. de C.V.
200.34.0.0/20 AS6342 Instituto Tecnológico y de Estudios Superiores de Monterrey
200.53.0.0/19 AS13878 Diveo do Brasil Telecomunicacoes Ltda
202.1.224.0/24 AS10097 FLOWCOM Flow Communications 2/541 Kent St Sydney NSW 2000
202.9.55.0/24 AS2764 AAPT AAPT Limited
202.9.57.0/24 AS2764 AAPT AAPT Limited
202.58.113.0/24 AS19161
202.61.75.0/24 AS9927 PHILCOMNET-PH A Multihomed ISP Company
202.74.232.0/24 AS17557 PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
202.74.233.0/24 AS17557 PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
202.83.120.0/21 AS37972
202.83.124.0/24 AS37972
202.83.125.0/24 AS37972
202.83.126.0/24 AS37972
202.94.1.0/24 AS4808 CHINA169-BJ CNCGROUP IP network China169 Beijing Province Network
202.133.70.0/24 AS38616 WORLDCALL-AS-KHI Worldcall Telecom Limited
202.160.152.0/22 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD
202.174.125.0/24 AS9498 BBIL-AP BHARTI Airtel Ltd.
202.176.1.0/24 AS9942 COMINDICO-AP SOUL Converged Communications Australia
202.179.131.0/24 AS17557 PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
202.179.134.0/24 AS23966 LDN-AS-PK LINKdotNET Telecom Limited
202.179.144.0/24 AS17557 PKTELECOM-AS-PK Pakistan Telecommunication Company Limited
203.23.1.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.24.38.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.30.127.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.32.86.0/23 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.32.86.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.32.87.0/24 AS18111 NETSPEED-AS-AP Netspeed Internet Communications
203.32.188.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd
203.142.219.0/24 AS45149
203.175.107.0/24 AS45595 PKTELECOM-AS-PK Pakistan Telecom Company Limited
205.150.0.0/15 AS701 UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
205.175.214.0/24 AS5583 ORANGE-BUSINESS-SERVICES-BENELUX Orange Business Services (formerly Equant) AS for BENELUX
205.207.148.0/23 AS812 ROGERS-CABLE - Rogers Cable Communications Inc.
206.72.192.0/23 AS16526 BIRCH-TELECOM - Birch Telecom, Inc.
206.72.194.0/23 AS16526 BIRCH-TELECOM - Birch Telecom, Inc.
206.123.129.0/24 AS10790 INREACH-AS - InReach Internet
206.180.240.0/20 AS12083 KNOLOGY-NET - Knology Holdings
206.197.184.0/24 AS23304 DATOTEL-STL-AS - Datotel LLC, a NetLabs LLC Company
207.174.131.0/24 AS26116 INDRA - Indra's Net Inc.
207.174.132.0/23 AS26116 INDRA - Indra's Net Inc.
207.174.152.0/23 AS26116 INDRA - Indra's Net Inc.
207.174.154.0/24 AS26116 INDRA - Indra's Net Inc.
207.174.155.0/24 AS26116 INDRA - Indra's Net Inc.
207.174.200.0/24 AS22658 EARTHNET - Earthnet, Inc.
207.174.248.0/21 AS6653 PRIVATEI - privateI, LLC
207.231.96.0/19 AS11194 NUNETPA - NuNet Inc.
208.64.240.0/21 AS13871 TELEBYTE-NW - Telebyte NW
208.83.53.0/24 AS40569 YGOMI-AS - Ygomi LLC
209.148.64.0/19 AS13773 TELNETCOMM - Telnet Communications
209.177.64.0/20 AS6461 MFNX MFN - Metromedia Fiber Network
209.213.0.0/20 AS33005 ELTOPIA - Eltopia.com, LLC
210.56.150.0/23 AS38138 INTECH-TRANSIT-BD InTech Online Limited, INTERNET SERVICE LIMITED
216.21.160.0/20 AS13818 PHX-INTL-TELEPORT - Phoenix International Teleport
216.58.200.0/24 AS18530 ISOMEDIA-1 - Isomedia Inc.
216.194.160.0/20 AS13818 PHX-INTL-TELEPORT - Phoenix International Teleport
Please see http://www.cidr-report.org for the full report
------------------------------------
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