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[bgp-stats] Routing Table Report - Japan view
* BGP Statistics focusing on the Asia Pacific Region *
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Routing Table Report 04:00 +10GMT Sun 10 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109795
Prefixes after maximum aggregation: 72141
Unique aggregates announced to Internet: 51991
Total ASes present in the Internet Routing Table: 12698
Origin-only ASes present in the Internet Routing Table: 10996
Origin ASes announcing only one prefix: 4805
Transit ASes present in the Internet Routing Table: 1702
Transit-only ASes present in the Internet Routing Table: 56
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 8
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1167452584
Equivalent to 69 /8s, 149 /16s and 233 /24s
Percentage of available address space announced: 31.5
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73603
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17909
Total APNIC prefixes after maximum aggregation: 10630
Prefixes being announced from the APNIC address blocks: 16444
Unique aggregates announced from the APNIC address blocks: 9980
APNIC Region origin ASes present in the Internet Routing Table: 1453
APNIC Region origin ASes announcing only one prefix: 479
APNIC Region transit ASes present in the Internet Routing Table: 251
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81495104
Equivalent to 4 /8s, 219 /16s and 132 /24s
Percentage of available APNIC address space announced: 60.2
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: 73601
Total ARIN prefixes after maximum aggregation: 47378
Prefixes being announced from the ARIN address blocks: 52004
Unique aggregates announced from the ARIN address blocks: 16277
ARIN Region origin ASes present in the Internet Routing Table: 7525
ARIN Region origin ASes announcing only one prefix: 2350
ARIN Region transit ASes present in the Internet Routing Table: 770
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 190061252
Equivalent to 11 /8s, 84 /16s and 26 /24s
Percentage of available ARIN address space announced: 70.8
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: 18284
Total RIPE prefixes after maximum aggregation: 14133
Prefixes being announced from the RIPE address blocks: 15032
Unique aggregates announced from the RIPE address blocks: 10035
RIPE Region origin ASes present in the Internet Routing Table: 3663
RIPE Region origin ASes announcing only one prefix: 1976
RIPE Region transit ASes present in the Internet Routing Table: 670
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107465504
Equivalent to 6 /8s, 103 /16s and 203 /24s
Percentage of available RIPE address space announced: 71.2
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 1301 1229 960 Telstra Pty Ltd
4538 462 1162 16 China Education and Research
2907 408 1975 372 SINET Japan
703 402 333 313 UUNET Technologies, Inc.
2764 386 361 362 connect.com.au pty ltd
9394 301 113 4 CHINA RAILWAY Internet(CRNET)
7474 295 289 200 Optus Communications Pty Ltd
4755 291 111 88 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 97 Data Communications Bureau
9443 273 44 63 Primus Telecommunications
17557 234 15 100 Pakistan Telecom
4766 213 1521 147 Korea Internet Exchange for "
7539 164 237 157 TANet2, sponsored by NSC, TAI
4804 148 84 68 Microplex PTY LTD
9583 143 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 126 898 103 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 117 186 40 Digital United Inc.
17676 117 1872 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1037 2630 850 UUNET Technologies, Inc.
3301 394 923 348 TeliaNet Sweden
3215 258 570 157 France Telecom / &Equant
1257 236 487 232 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 216 697 173 Sonera Finland Autonomous Sys
5400 199 83 93 Concert European Core Network
3320 196 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 158 23 147 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 122 577 122 Swisscom Ltd
12302 121 8 42 MobiFon S.A.
3269 116 693 70 TELECOM ITALIA
8297 115 37 65 Teleglobe Autonomous System i
517 101 226 99 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
2874 97 100 37 Global One Services AB
5511 91 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2141 8406 1513 UUNET Technologies, Inc.
7018 1214 7495 914 AT&T
3908 850 1659 481 Supernet, Inc.
1 836 8123 610 BBN Planet
1239 795 3382 623 Sprint
4323 639 435 252 Time Warner Communications, I
852 634 1128 415 Telus Advanced Communications
7046 620 835 407 UUNET Technologies, Inc.
209 547 1993 316 Qwest
7132 516 543 158 Southwestern Bell Internet Se
3549 480 843 245 Global Crossing
690 436 66 282 Merit Network
2914 421 2176 417 Verio, Inc.
7843 382 311 50 Adelphia Corp.
2149 380 225 316 Performance Systems, Inc.
705 368 115 259 UUNET Technologies, Inc.
3741 345 731 235 The Internet Solution
2386 337 356 192 AT&T Data Communications Serv
6197 330 215 168 BellSouth Network Solutions,
577 324 602 217 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 462 446 China Education and Research
4323 639 387 Time Warner Communications, I
3908 850 369 Supernet, Inc.
7132 516 358 Southwestern Bell Internet Se
1221 1301 341 Telstra Pty Ltd
7843 382 332 Adelphia Corp.
7018 1214 300 AT&T
9394 301 297 CHINA RAILWAY Internet(CRNET)
4151 306 290 USDA
11371 289 283 Rhythms NetConnections
6198 309 276 BellSouth Network Solutions,
6347 315 237 SAVVIS Communications Corpora
3549 480 235 Global Crossing
209 547 231 Qwest
7029 243 228 Alltel Information Services,
1 836 226 BBN Planet
852 634 219 Telus Advanced Communications
7046 620 213 UUNET Technologies, Inc.
9443 273 210 Primus Telecommunications
4355 242 205 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23336 UNALLOCATED 65.163.175.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.166.167.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.171.130.0/24 701 UUNET Technologies,
23336 UNALLOCATED 65.222.19.0/24 701 UUNET Technologies,
23339 UNALLOCATED 66.181.32.0/20 701 UUNET Technologies,
65012 PRIVATE 164.117.0.0/16 765 Communications Syste
23336 UNALLOCATED 204.182.49.0/24 701 UUNET Technologies,
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
101.101.5.0/24 684 Manitoba Regional Network
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
189.186.184.0/24 4471 Michigan Internet Cooperative
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 /14:231 /15:404 /16:7168 /17:1382 /18:2539
/19:7392 /20:6910 /21:4925 /22:7487 /23:9168 /24:61032
/25:228 /26:266 /27:119 /28:90 /29:109 /30:131
/31:0 /32:45
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1382 2141 UUNET Technologies, Inc.
1221 1158 1301 Telstra Pty Ltd
702 659 1037 UUNET Technologies, Inc.
7018 634 1214 AT&T
3908 585 850 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 454 795 Sprint
7046 437 620 UUNET Technologies, Inc.
1 433 836 BBN Planet
690 432 436 Merit Network
852 388 634 Telus Advanced Communications
209 359 547 Qwest
3549 343 480 Global Crossing
2764 342 386 connect.com.au pty ltd
703 324 402 UUNET Technologies, Inc.
705 315 368 UUNET Technologies, Inc.
9394 288 301 CHINA RAILWAY Internet(CRNET)
2149 287 380 Performance Systems, Inc.
11371 283 289 Rhythms NetConnections
6197 279 330 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:486 13:10 15:1 17:5
20:2 24:758 25:1 32:69 38:9 40:6
44:1 57:15 61:284 62:171 63:1887 64:1147
65:1072 66:808 67:52 68:5 80:213 81:5
101:1 128:63 129:121 130:23 131:74 132:11
133:3 134:125 135:10 136:251 137:102 138:193
139:48 140:185 141:61 142:88 143:37 144:142
145:12 146:217 147:164 148:130 149:91 150:41
151:49 152:343 153:33 154:8 155:90 156:75
157:119 158:73 159:118 160:23 161:55 162:139
163:108 164:94 165:123 166:225 167:187 168:119
169:49 170:290 171:2 189:1 192:5417 193:2201
194:2077 195:800 196:427 198:3694 199:3227 200:2374
201:1 202:3036 203:4529 204:3327 205:2170 206:2568
207:2627 208:2565 209:2810 210:544 211:200 212:859
213:585 214:9 215:18 216:2979 217:442 218:21
End of report
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