Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Mar 22 05:05:00 EST 2002
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 20:00 +10GMT Fri 22 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109956
Prefixes after maximum aggregation: 72203
Unique aggregates announced to Internet: 52252
Total ASes present in the Internet Routing Table: 12779
Origin-only ASes present in the Internet Routing Table: 11065
Origin ASes announcing only one prefix: 4843
Transit ASes present in the Internet Routing Table: 1714
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 19
Illegal AS announcements present in the Routing Table: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1168580328
Equivalent to 69 /8s, 167 /16s and 30 /24s
Percentage of available address space announced: 31.5
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73621
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18137
Total APNIC prefixes after maximum aggregation: 10698
Prefixes being announced from the APNIC address blocks: 16655
Unique aggregates announced from the APNIC address blocks: 10053
APNIC Region origin ASes present in the Internet Routing Table: 1470
APNIC Region origin ASes announcing only one prefix: 477
APNIC Region transit ASes present in the Internet Routing Table: 259
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 82062400
Equivalent to 4 /8s, 228 /16s and 44 /24s
Percentage of available APNIC address space announced: 60.7
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 73404
Total ARIN prefixes after maximum aggregation: 47340
Prefixes being announced from the ARIN address blocks: 51865
Unique aggregates announced from the ARIN address blocks: 16357
ARIN Region origin ASes present in the Internet Routing Table: 7566
ARIN Region origin ASes announcing only one prefix: 2384
ARIN Region transit ASes present in the Internet Routing Table: 762
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 190253252
Equivalent to 11 /8s, 87 /16s and 8 /24s
Percentage of available ARIN address space announced: 70.9
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 18411
Total RIPE prefixes after maximum aggregation: 14165
Prefixes being announced from the RIPE address blocks: 15142
Unique aggregates announced from the RIPE address blocks: 10085
RIPE Region origin ASes present in the Internet Routing Table: 3687
RIPE Region origin ASes announcing only one prefix: 1982
RIPE Region transit ASes present in the Internet Routing Table: 679
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 107780960
Equivalent to 6 /8s, 108 /16s and 155 /24s
Percentage of available RIPE address space announced: 71.4
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1289 1213 952 Telstra Pty Ltd
4538 462 1194 17 China Education and Research
703 409 335 319 UUNET Technologies, Inc.
2907 405 1894 370 SINET Japan
2764 384 361 360 connect.com.au pty ltd
9394 317 113 4 CHINA RAILWAY Internet(CRNET)
7474 302 289 206 Optus Communications Pty Ltd
4755 293 113 85 Videsh Sanchar Nigam Ltd. Aut
9443 276 44 64 Primus Telecommunications
4134 272 1962 95 Data Communications Bureau
17557 246 16 94 Pakistan Telecom
4766 206 1516 146 Korea Internet Exchange for "
7539 166 239 160 TANet2, sponsored by NSC, TAI
4804 165 84 68 Microplex PTY LTD
9583 148 32 5 Satyam Infoway Ltd.,
9768 138 385 82 Korea Telecom
7657 122 22 85 The Internet Group Limited
4713 120 891 104 NTT Communications Corporatio
17676 119 1904 12 XTAGE CORPORATION
4780 118 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1032 2608 848 UUNET Technologies, Inc.
3301 394 924 349 TeliaNet Sweden
3215 265 586 158 France Telecom / &Equant
5515 262 696 168 Sonera Finland Autonomous Sys
680 232 2149 231 DFN-IP service G-WiN
1257 222 464 218 SWIPnet Swedish IP Network
5400 198 83 93 Concert European Core Network
3320 197 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 157 23 145 Romania Data Systems S.A.
2856 129 788 118 BTnet UK Regional network
3303 125 581 124 Swisscom Ltd
12302 125 8 46 MobiFon S.A.
8297 120 53 67 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
517 103 226 99 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
5511 100 193 89 France Telecom
2874 97 100 37 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2106 8368 1495 UUNET Technologies, Inc.
7018 1229 7529 914 AT&T
3908 848 1675 477 Supernet, Inc.
1 810 8123 605 BBN Planet
1239 809 3368 634 Sprint
852 672 5204 411 Telus Advanced Communications
4323 624 436 253 Time Warner Communications, I
7046 605 834 393 UUNET Technologies, Inc.
209 555 1992 319 Qwest
7132 518 545 158 Southwestern Bell Internet Se
3549 502 845 257 Global Crossing
690 462 69 305 Merit Network
2914 414 2169 410 Verio, Inc.
7843 398 314 49 Adelphia Corp.
705 378 116 270 UUNET Technologies, Inc.
2149 377 209 314 Performance Systems, Inc.
3741 343 731 233 The Internet Solution
6197 330 217 171 BellSouth Network Solutions,
3561 318 2151 285 Cable & Wireless USA
7066 318 203 251 Virginia Polytechnic Institut
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 462 445 China Education and Research
3908 848 371 Supernet, Inc.
4323 624 371 Time Warner Communications, I
7132 518 360 Southwestern Bell Internet Se
7843 398 349 Adelphia Corp.
1221 1289 337 Telstra Pty Ltd
7018 1229 315 AT&T
9394 317 313 CHINA RAILWAY Internet(CRNET)
4151 307 291 USDA
6198 310 279 BellSouth Network Solutions,
11371 277 271 Rhythms NetConnections
852 672 261 Telus Advanced Communications
3549 502 245 Global Crossing
6347 316 238 SAVVIS Communications Corpora
209 555 236 Qwest
7029 244 229 Alltel Information Services,
7046 605 212 UUNET Technologies, Inc.
9443 276 212 Primus Telecommunications
4755 293 208 Videsh Sanchar Nigam Ltd. Aut
1 810 205 BBN Planet
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises
65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:5 /10:8 /11:14 /12:35
/13:88 /14:229 /15:404 /16:7180 /17:1388 /18:2555
/19:7416 /20:6925 /21:4923 /22:7528 /23:9145 /24:61142
/25:219 /26:259 /27:115 /28:92 /29:102 /30:132
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1373 2106 UUNET Technologies, Inc.
1221 1147 1289 Telstra Pty Ltd
702 654 1032 UUNET Technologies, Inc.
7018 643 1229 AT&T
3908 580 848 Supernet, Inc.
4323 495 624 Time Warner Communications, I
1239 467 809 Sprint
690 457 462 Merit Network
852 424 672 Telus Advanced Communications
7046 420 605 UUNET Technologies, Inc.
1 403 810 BBN Planet
209 365 555 Qwest
3549 363 502 Global Crossing
2764 340 384 connect.com.au pty ltd
703 330 409 UUNET Technologies, Inc.
705 325 378 UUNET Technologies, Inc.
9394 303 317 CHINA RAILWAY Internet(CRNET)
7066 289 318 Virginia Polytechnic Institut
2149 286 377 Performance Systems, Inc.
6197 279 330 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:478 13:10 15:2 17:5
20:2 24:741 25:1 32:68 38:9 40:6
44:1 57:14 61:302 62:166 63:1894 64:1180
65:1095 66:812 67:53 68:3 80:221 81:6
128:64 129:126 130:23 131:57 132:10 133:3
134:128 135:10 136:283 137:102 138:149 139:49
140:187 141:90 142:84 143:38 144:145 145:11
146:220 147:147 148:135 149:92 150:39 151:50
152:326 153:33 154:5 155:90 156:75 157:118
158:72 159:125 160:26 161:54 162:139 163:104
164:121 165:123 166:221 167:193 168:90 169:51
170:292 171:2 192:5441 193:2221 194:2102 195:793
196:428 198:3732 199:3199 200:2375 201:1 202:3088
203:4559 204:3275 205:2147 206:2496 207:2606 208:2573
209:2781 210:581 211:204 212:857 213:594 214:9
215:19 216:3016 217:459 218:13
End of report
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