Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri May 17 06:05:04 EDT 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 17 May, 2002
Analysis Summary
----------------
BGP routing table entries examined: 112248
Prefixes after maximum aggregation: 73217
Unique aggregates announced to Internet: 52555
Total ASes present in the Internet Routing Table: 13075
Origin-only ASes present in the Internet Routing Table: 11335
Origin ASes announcing only one prefix: 4978
Transit ASes present in the Internet Routing Table: 1740
Transit-only ASes present in the Internet Routing Table: 49
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 11
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 40
Number of addresses announced to Internet: 1179664060
Equivalent to 70 /8s, 80 /16s and 62 /24s
Percentage of available address space announced: 31.8
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 53.7
Total number of prefixes smaller than registry allocations: 45313
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18016
Total APNIC prefixes after maximum aggregation: 10886
Prefixes being announced from the APNIC address blocks: 16528
Unique aggregates announced from the APNIC address blocks: 10235
APNIC Region origin ASes present in the Internet Routing Table: 1510
APNIC Region origin ASes announcing only one prefix: 497
APNIC Region transit ASes present in the Internet Routing Table: 270
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 84693696
Equivalent to 5 /8s, 12 /16s and 82 /24s
Percentage of available APNIC address space announced: 62.6
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: 75420
Total ARIN prefixes after maximum aggregation: 47997
Prefixes being announced from the ARIN address blocks: 53719
Unique aggregates announced from the ARIN address blocks: 16805
ARIN Region origin ASes present in the Internet Routing Table: 7725
ARIN Region origin ASes announcing only one prefix: 2446
ARIN Region transit ASes present in the Internet Routing Table: 754
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 192265156
Equivalent to 11 /8s, 117 /16s and 187 /24s
Percentage of available ARIN address space announced: 71.6
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
25600 - 26623
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: 18812
Total RIPE prefixes after maximum aggregation: 14334
Prefixes being announced from the RIPE address blocks: 15512
Unique aggregates announced from the RIPE address blocks: 9747
RIPE Region origin ASes present in the Internet Routing Table: 3791
RIPE Region origin ASes announcing only one prefix: 2035
RIPE Region transit ASes present in the Internet Routing Table: 699
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 114854192
Equivalent to 6 /8s, 216 /16s and 137 /24s
Percentage of available RIPE address space announced: 76.1
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 1270 1223 914 Telstra Pty Ltd
4538 478 1194 17 China Education and Research
2907 432 1910 373 SINET Japan
703 403 337 324 UUNET Technologies, Inc.
2764 396 360 363 connect.com.au pty ltd
7474 308 291 206 Optus Communications Pty Ltd
4134 281 2068 95 Data Communications Bureau
17557 270 18 108 Pakistan Telecom
4755 265 109 75 Videsh Sanchar Nigam Ltd. Aut
9443 253 44 59 Primus Telecommunications
4766 224 1518 156 Korea Internet Exchange for "
9583 177 32 5 Satyam Infoway Ltd.,
7539 152 218 146 TANet2, sponsored by NSC, TAI
9768 146 386 80 Korea Telecom
7657 131 22 87 The Internet Group Limited
4814 127 66 13 China Telecom (Group) - Beiji
17676 125 1954 10 XTAGE CORPORATION
4780 118 186 39 Digital United Inc.
4713 114 993 105 NTT Communications Corporatio
9800 114 186 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1035 2607 853 UUNET Technologies, Inc.
3301 394 908 346 TeliaNet Sweden
5515 268 776 176 Sonera Finland Autonomous Sys
3215 264 597 164 France Telecom / &Equant
680 231 2149 230 DFN-IP service G-WiN
3320 231 1947 178 Deutsche Telekom AG
1257 208 430 205 SWIPnet Swedish IP Network
5400 200 83 95 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 168 289 120 LANLINK autonomous system
8708 141 22 136 Romania Data Systems S.A.
12302 131 9 49 MobiFon S.A.
2856 126 786 116 BTnet UK Regional network
3303 117 546 115 Swisscom Ltd
8297 116 4137 62 Teleglobe Autonomous System i
3269 115 694 71 TELECOM ITALIA
5511 111 191 92 France Telecom
517 101 226 97 KPNQwest Germany GmbH
2830 100 244 76 UUNET Dual-Homed customers
2874 97 84 37 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2089 8380 1458 UUNET Technologies, Inc.
7018 1293 7558 936 AT&T
3908 883 1644 486 Supernet, Inc.
1239 828 3412 669 Sprint
1 813 8185 459 BBN Planet
7046 690 872 476 UUNET Technologies, Inc.
852 664 1132 422 Telus Advanced Communications
4323 632 436 257 Time Warner Communications, I
209 583 1967 325 Qwest
7132 568 606 136 Southwestern Bell Internet Se
690 564 82 366 Merit Network
3549 515 854 320 Global Crossing
7843 503 364 57 Adelphia Corp.
7066 473 202 248 Virginia Polytechnic Institut
2914 399 2110 390 Verio, Inc.
705 373 100 265 UUNET Technologies, Inc.
3741 344 731 236 The Internet Solution
4293 342 84 265 Cable & Wireless USA
2149 341 191 283 Performance Systems, Inc.
6197 341 260 164 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 478 461 China Education and Research
7843 503 446 Adelphia Corp.
7132 568 432 Southwestern Bell Internet Se
3908 883 397 Supernet, Inc.
4323 632 375 Time Warner Communications, I
7018 1293 357 AT&T
1221 1270 356 Telstra Pty Ltd
1 813 354 BBN Planet
11371 292 286 Rhythms NetConnections
4151 300 284 USDA
209 583 258 Qwest
6347 337 258 SAVVIS Communications Corpora
7029 261 246 Alltel Information Services,
852 664 242 Telus Advanced Communications
4355 276 238 EarthLink, Inc.
7066 473 225 Virginia Polytechnic Institut
7046 690 214 UUNET Technologies, Inc.
6198 313 209 BellSouth Network Solutions,
6517 240 206 Yipes Communications, Inc.
18566 209 205 Covad Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18189 UNALLOCATED 202.59.196.0/24 703 UUNET Technologies,
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
25810 UNALLOCATED 209.242.165.32/27 195 San Diego Supercompu
25810 UNALLOCATED 209.242.165.128/25 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.0/26 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.72/29 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.80/28 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.96/29 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.112/28 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.128/29 195 San Diego Supercompu
25810 UNALLOCATED 209.242.166.160/27 195 San Diego Supercompu
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.0.2.0/24 1103 SURFnet BV
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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
153.147.0.0/16 3561 Cable & Wireless USA
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
192.31.126.0/23 1103 SURFnet BV
192.31.128.0/21 1103 SURFnet BV
192.44.0.0/19 702 UUNET Technologies, Inc.
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.14.0/24 5515 Sonera Finland Autonomous Sys
192.83.16.0/20 5515 Sonera Finland Autonomous Sys
192.83.25.0/24 5515 Sonera Finland Autonomous Sys
192.83.32.0/19 5515 Sonera Finland Autonomous Sys
192.83.96.0/22 5515 Sonera Finland Autonomous Sys
192.83.100.0/24 5515 Sonera Finland Autonomous Sys
192.91.198.0/24 2568 CTS Network Services
192.92.167.0/24 297 NASA Science Network
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.135.248.0/23 109 Cisco Systems, Inc.
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.152.213.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.195.253.0/24 237 Merit Network
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 7168 Northwest Link
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:6 /10:7 /11:13 /12:32
/13:85 /14:232 /15:407 /16:7200 /17:1442 /18:2569
/19:7517 /20:7112 /21:5054 /22:7740 /23:9388 /24:62606
/25:215 /26:188 /27:89 /28:98 /29:46 /30:113
/31:0 /32:69
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 658 2089 UUNET Technologies, Inc.
702 643 1035 UUNET Technologies, Inc.
3908 472 883 Supernet, Inc.
690 455 564 Merit Network
7066 378 473 Virginia Polytechnic Institut
7018 336 1293 AT&T
7046 321 690 UUNET Technologies, Inc.
7843 293 503 Adelphia Corp.
209 267 583 Qwest
1 251 813 BBN Planet
7029 246 261 Alltel Information Services,
6197 245 341 BellSouth Network Solutions,
11371 245 292 Rhythms NetConnections
3301 237 394 TeliaNet Sweden
6198 231 313 BellSouth Network Solutions,
4293 220 342 Cable & Wireless USA
6517 218 240 Yipes Communications, Inc.
3549 216 515 Global Crossing
1239 215 828 Sprint
18566 205 209 Covad Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:508 13:10 15:2 17:7
20:2 24:768 25:1 32:40 38:8 40:6
44:1 57:13 61:219 62:202 63:1973 64:1197
65:1388 66:916 67:77 68:12 80:231 81:27
128:59 129:133 130:23 131:47 132:13 133:3
134:120 135:9 136:254 137:93 138:150 139:56
140:181 141:120 142:78 143:38 144:148 145:11
146:178 147:134 148:168 149:94 150:40 151:60
152:269 153:33 154:3 155:99 156:74 157:127
158:69 159:127 160:18 161:64 162:147 163:101
164:271 165:141 166:229 167:171 168:124 169:57
170:338 171:2 192:5441 193:2305 194:2108 195:797
196:410 198:3694 199:3243 200:2517 202:3135 203:4559
204:3270 205:2178 206:2618 207:2668 208:2817 209:2719
210:593 211:223 212:879 213:622 214:9 215:18
216:3023 217:457 218:17
End of report
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