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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 Mon 18 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107948
Prefixes after maximum aggregation: 71891
Unique aggregates announced to Internet: 52635
Total ASes present in the Internet Routing Table: 12555
Origin-only ASes present in the Internet Routing Table: 10865
Origin ASes announcing only one prefix: 4758
Transit ASes present in the Internet Routing Table: 1690
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 22
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: 1165147528
Equivalent to 69 /8s, 114 /16s and 189 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.5
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71925
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17389
Total APNIC prefixes after maximum aggregation: 10585
Prefixes being announced from the APNIC address blocks: 15890
Unique aggregates announced from the APNIC address blocks: 9760
APNIC Region origin ASes present in the Internet Routing Table: 1446
APNIC Region origin ASes announcing only one prefix: 483
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: 79567680
Equivalent to 4 /8s, 190 /16s and 27 /24s
Percentage of available APNIC address space announced: 58.8
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: 72678
Total ARIN prefixes after maximum aggregation: 47302
Prefixes being announced from the ARIN address blocks: 51321
Unique aggregates announced from the ARIN address blocks: 17278
ARIN Region origin ASes present in the Internet Routing Table: 7437
ARIN Region origin ASes announcing only one prefix: 2317
ARIN Region transit ASes present in the Internet Routing Table: 768
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 186600644
Equivalent to 11 /8s, 31 /16s and 76 /24s
Percentage of available ARIN address space announced: 69.5
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: 17881
Total RIPE prefixes after maximum aggregation: 14004
Prefixes being announced from the RIPE address blocks: 14709
Unique aggregates announced from the RIPE address blocks: 9942
RIPE Region origin ASes present in the Internet Routing Table: 3611
RIPE Region origin ASes announcing only one prefix: 1958
RIPE Region transit ASes present in the Internet Routing Table: 656
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 106697728
Equivalent to 6 /8s, 92 /16s and 20 /24s
Percentage of available RIPE address space announced: 70.7
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 1315 1258 959 Telstra Pty Ltd
4538 453 1162 16 China Education and Research
2907 399 1942 366 SINET Japan
703 396 358 309 UUNET Technologies, Inc.
2764 389 361 364 connect.com.au pty ltd
7474 300 289 203 Optus Communications Pty Ltd
4755 292 111 86 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 243 112 3 CHINA RAILWAY Internet(CRNET)
17557 214 16 96 Pakistan Telecom
4766 205 1393 145 Korea Internet Exchange for "
9443 160 44 58 Primus Telecommunications
7539 159 204 153 TANet2, sponsored by NSC, TAI
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 115 186 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 1066 2600 854 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 256 487 247 SWIPnet Swedish IP Network
3215 241 570 156 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 216 705 173 Sonera Finland Autonomous Sys
5400 200 83 95 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 155 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 95 101 35 Global One Services AB
1267 91 1471 41 Infostrada S.p.A.
5511 91 192 80 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2084 8428 1496 UUNET Technologies, Inc.
7018 1227 7498 926 AT&T
1 829 8103 601 BBN Planet
3908 829 1676 479 Supernet, Inc.
1239 802 3324 619 Sprint
4323 648 433 243 Time Warner Communications, I
7046 636 851 426 UUNET Technologies, Inc.
852 613 1125 409 Telus Advanced Communications
209 535 1909 306 Qwest
7132 456 510 164 Southwestern Bell Internet Se
2914 451 2192 419 Verio, Inc.
3549 444 822 230 Global Crossing
690 437 66 283 Merit Network
2149 381 225 319 Performance Systems, Inc.
705 380 114 268 UUNET Technologies, Inc.
7843 364 290 50 Adelphia Corp.
3561 359 2219 315 Cable & Wireless USA
577 352 588 218 Bell Advanced Communications
3741 343 730 234 The Internet Solution
2386 332 355 190 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 453 437 China Education and Research
4323 648 405 Time Warner Communications, I
1221 1315 356 Telstra Pty Ltd
3908 829 350 Supernet, Inc.
7843 364 314 Adelphia Corp.
7018 1227 301 AT&T
7132 456 292 Southwestern Bell Internet Se
4151 304 288 USDA
11371 278 271 Rhythms NetConnections
9394 243 240 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 535 229 Qwest
1 829 228 BBN Planet
3549 444 214 Global Crossing
702 1066 212 UUNET Technologies, Inc.
7046 636 210 UUNET Technologies, Inc.
4755 292 206 Videsh Sanchar Nigam Ltd. Aut
4355 244 205 EarthLink, Inc.
852 613 204 Telus Advanced Communications
1580 211 200 HQ, 5th Signal Command
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 /8:18 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:395 /16:7140 /17:1432 /18:2509
/19:7375 /20:6742 /21:4805 /22:7258 /23:8911 /24:60045
/25:219 /26:253 /27:118 /28:86 /29:89 /30:129
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1334 2084 UUNET Technologies, Inc.
1221 1169 1315 Telstra Pty Ltd
702 693 1066 UUNET Technologies, Inc.
7018 642 1227 AT&T
3908 583 829 Supernet, Inc.
4323 529 648 Time Warner Communications, I
1239 473 802 Sprint
7046 453 636 UUNET Technologies, Inc.
690 433 437 Merit Network
1 427 829 BBN Planet
852 372 613 Telus Advanced Communications
209 355 535 Qwest
2764 345 389 connect.com.au pty ltd
705 327 380 UUNET Technologies, Inc.
703 319 396 UUNET Technologies, Inc.
3549 310 444 Global Crossing
2149 288 381 Performance Systems, Inc.
6197 275 328 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 12:482 13:10 15:1 17:5
20:5 24:766 25:1 32:68 38:9 40:6
44:1 57:14 61:227 62:171 63:1888 64:1127
65:1033 66:690 67:33 68:5 80:190 81:4
128:62 129:123 130:21 131:57 132:11 133:3
134:129 135:10 136:244 137:106 138:149 139:47
140:162 141:61 142:81 143:36 144:154 145:12
146:217 147:154 148:148 149:92 150:40 151:45
152:302 153:32 154:7 155:83 156:77 157:121
158:81 159:88 160:24 161:53 162:101 163:113
164:93 165:123 166:224 167:169 168:111 169:49
170:292 171:2 189:1 192:5427 193:2128 194:2006
195:788 196:444 198:3699 199:3230 200:2311 201:1
202:2894 203:4467 204:3303 205:2167 206:2530 207:2614
208:2575 209:2835 210:530 211:158 212:889 213:554
214:9 215:18 216:2971 217:439 218:10
End of report
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