This report has been generated at Fri Dec 27 21:48:19 2002 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.
Check http://www.cidr-report.org/as4637 for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
20-12-02 116819 84591
21-12-02 117027 84645
22-12-02 116950 84680
23-12-02 117004 84625
24-12-02 117042 84622
25-12-02 117164 84618
26-12-02 117170 84663
27-12-02 117120 84778
AS Summary
14244 Number of ASes in routing system
5613 Number of ASes announcing only one prefix
1625 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
72982528 Largest address span announced by an AS (/32s)
AS568 : SUMNET-AS DISO-UNRRA
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').
--- 27Dec02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 117163 84785 32378 27.6% All ASes
AS3908 1173 684 489 41.7% SUPERNETASBLK SuperNet, Inc.
AS701 1625 1208 417 25.7% ALTERNET-AS UUNET
Technologies, Inc.
AS18566 414 5 409 98.8% COVAD Covad Communications
AS7018 1425 1030 395 27.7% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 531 188 343 64.6% TW-COMM Time Warner
Communications, Inc.
AS7843 629 289 340 54.1% ADELPHIA-AS Adelphia Corp.
AS1221 1147 831 316 27.6% ASN-TELSTRA Telstra Pty Ltd
AS6197 454 150 304 67.0% BATI-ATL BellSouth Network
Solutions, Inc
AS6347 360 85 275 76.4% DIAMOND SAVVIS Communications
Corporation
AS4355 407 135 272 66.8% ERMS-EARTHLNK EARTHLINK, INC
AS7046 581 311 270 46.5% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS1239 947 682 265 28.0% SPRINTLINK Sprint
AS705 422 188 234 55.5% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 249 15 234 94.0% CHINANET-BEIJING-AP China
Telecom (Group)
AS1 662 440 222 33.5% GNTY-1 Genuity
AS6198 422 200 222 52.6% BATI-MIA BellSouth Network
Solutions, Inc
AS17676 231 26 205 88.7% GIGAINFRA XTAGE CORPORATION
AS22291 226 29 197 87.2% CHARTER-LA Charter
Communications
AS690 513 319 194 37.8% MERIT-AS-27 Merit Network Inc.
AS6140 315 125 190 60.3% IMPSAT-USA ImpSat
AS4151 324 135 189 58.3% USDA-1 USDA
AS4134 289 108 181 62.6% ERX-CHINALINK Data
Communications Bureau
AS209 517 337 180 34.8% ASN-QWEST Qwest
AS852 619 445 174 28.1% ASN852 Telus Advanced
Communications
AS2048 255 84 171 67.1% LANET-1 State of Louisiana
AS6327 184 33 151 82.1% SHAWFIBER Shaw Fiberlink
Limited
AS17557 323 179 144 44.6% PKTELECOM-AS-AP Pakistan
Telecom
AS2386 370 228 142 38.4% INS-AS AT&T Data
Communications Services
AS3215 313 174 139 44.4% AS3215 France Telecom
Transpac
Total 16216 8685 7531 46.4% Top 30 total
Please see http://www.cidr-report.org for the full report