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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 Wed 20 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108199
Prefixes after maximum aggregation: 71922
Unique aggregates announced to Internet: 52553
Total ASes present in the Internet Routing Table: 12577
Origin-only ASes present in the Internet Routing Table: 10885
Origin ASes announcing only one prefix: 4767
Transit ASes present in the Internet Routing Table: 1692
Transit-only ASes present in the Internet Routing Table: 57
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: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1167084300
Equivalent to 69 /8s, 144 /16s and 75 /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: 72080
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17473
Total APNIC prefixes after maximum aggregation: 10631
Prefixes being announced from the APNIC address blocks: 16006
Unique aggregates announced from the APNIC address blocks: 9854
APNIC Region origin ASes present in the Internet Routing Table: 1452
APNIC Region origin ASes announcing only one prefix: 485
APNIC Region transit ASes present in the Internet Routing Table: 250
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79649600
Equivalent to 4 /8s, 191 /16s and 91 /24s
Percentage of available APNIC address space announced: 58.9
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: 72808
Total ARIN prefixes after maximum aggregation: 47276
Prefixes being announced from the ARIN address blocks: 51353
Unique aggregates announced from the ARIN address blocks: 17073
ARIN Region origin ASes present in the Internet Routing Table: 7443
ARIN Region origin ASes announcing only one prefix: 2320
ARIN Region transit ASes present in the Internet Routing Table: 764
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 188072772
Equivalent to 11 /8s, 53 /16s and 195 /24s
Percentage of available ARIN address space announced: 70.1
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: 17918
Total RIPE prefixes after maximum aggregation: 14015
Prefixes being announced from the RIPE address blocks: 14744
Unique aggregates announced from the RIPE address blocks: 9946
RIPE Region origin ASes present in the Internet Routing Table: 3624
RIPE Region origin ASes announcing only one prefix: 1962
RIPE Region transit ASes present in the Internet Routing Table: 665
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 106877184
Equivalent to 6 /8s, 94 /16s and 209 /24s
Percentage of available RIPE address space announced: 70.8
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 1309 1257 957 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 401 359 310 UUNET Technologies, Inc.
2907 399 1942 366 SINET Japan
2764 389 361 364 connect.com.au pty ltd
7474 299 289 203 Optus Communications Pty Ltd
4755 288 111 89 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 243 112 3 CHINA RAILWAY Internet(CRNET)
4766 217 1392 149 Korea Internet Exchange for "
17557 178 14 81 Pakistan Telecom
7539 161 204 155 TANet2, sponsored by NSC, TAI
9443 160 44 58 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 139 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 117 186 40 Digital United Inc.
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1065 2616 856 UUNET Technologies, Inc.
3301 397 924 350 TeliaNet Sweden
1257 255 487 246 SWIPnet Swedish IP Network
3215 239 570 155 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 203 672 164 Sonera Finland Autonomous Sys
5400 197 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 181 1858 181 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 156 21 144 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 115 40 65 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
2874 96 101 35 Global One Services AB
2830 91 210 73 UUNET Dual-Homed customers
5511 91 192 80 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2104 8444 1502 UUNET Technologies, Inc.
7018 1222 7514 924 AT&T
3908 830 1677 480 Supernet, Inc.
1 824 8103 597 BBN Planet
1239 804 3340 620 Sprint
4323 654 433 243 Time Warner Communications, I
7046 635 851 425 UUNET Technologies, Inc.
852 614 1125 410 Telus Advanced Communications
209 536 1973 307 Qwest
7132 456 510 164 Southwestern Bell Internet Se
2914 451 2192 419 Verio, Inc.
3549 446 822 232 Global Crossing
690 437 66 283 Merit Network
705 385 114 273 UUNET Technologies, Inc.
2149 377 209 315 Performance Systems, Inc.
7843 372 294 51 Adelphia Corp.
577 357 588 221 Bell Advanced Communications
3561 357 2219 314 Cable & Wireless USA
3741 343 730 234 The Internet Solution
2386 333 355 191 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 654 411 Time Warner Communications, I
1221 1309 352 Telstra Pty Ltd
3908 830 350 Supernet, Inc.
7843 372 321 Adelphia Corp.
7018 1222 298 AT&T
7132 456 292 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 271 Rhythms NetConnections
9394 243 240 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 536 229 Qwest
1 824 227 BBN Planet
3549 446 214 Global Crossing
7046 635 210 UUNET Technologies, Inc.
702 1065 209 UUNET Technologies, Inc.
4355 245 206 EarthLink, Inc.
852 614 204 Telus Advanced Communications
7029 215 200 Alltel Information Services,
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
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
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 /9:6 /10:7 /11:12 /12:37
/13:91 /14:233 /15:394 /16:7148 /17:1433 /18:2519
/19:7387 /20:6763 /21:4803 /22:7270 /23:8904 /24:60230
/25:221 /26:252 /27:124 /28:88 /29:89 /30:131
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1351 2104 UUNET Technologies, Inc.
1221 1163 1309 Telstra Pty Ltd
702 690 1065 UUNET Technologies, Inc.
7018 636 1222 AT&T
3908 584 830 Supernet, Inc.
4323 534 654 Time Warner Communications, I
1239 472 804 Sprint
7046 452 635 UUNET Technologies, Inc.
690 433 437 Merit Network
1 424 824 BBN Planet
852 372 614 Telus Advanced Communications
209 354 536 Qwest
2764 345 389 connect.com.au pty ltd
705 332 385 UUNET Technologies, Inc.
703 324 401 UUNET Technologies, Inc.
3549 312 446 Global Crossing
2149 285 377 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 275 304 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:485 13:10 15:1 17:5
20:5 24:772 25:1 32:68 38:9 40:6
44:1 57:14 61:228 62:171 63:1891 64:1115
65:1033 66:702 67:33 68:5 80:192 81:4
128:62 129:123 130:21 131:57 132:11 133:3
134:128 135:10 136:245 137:100 138:148 139:47
140:166 141:61 142:82 143:37 144:153 145:12
146:216 147:154 148:146 149:92 150:40 151:45
152:300 153:32 154:7 155:83 156:77 157:120
158:81 159:88 160:23 161:55 162:114 163:114
164:95 165:120 166:224 167:170 168:116 169:49
170:293 171:2 189:1 192:5433 193:2134 194:2007
195:791 196:444 198:3738 199:3225 200:2319 201:1
202:2945 203:4492 204:3311 205:2176 206:2524 207:2617
208:2565 209:2836 210:526 211:168 212:901 213:557
214:9 215:18 216:2963 217:444 218:10
End of report
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