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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 Fri 08 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108199
Prefixes after maximum aggregation: 72037
Unique aggregates announced to Internet: 52088
Total ASes present in the Internet Routing Table: 12520
Origin-only ASes present in the Internet Routing Table: 10823
Origin ASes announcing only one prefix: 4731
Transit ASes present in the Internet Routing Table: 1697
Transit-only ASes present in the Internet Routing Table: 62
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 20
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: 1171164424
Equivalent to 69 /8s, 206 /16s and 141 /24s
Percentage of available address space announced: 31.6
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72141
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17638
Total APNIC prefixes after maximum aggregation: 10636
Prefixes being announced from the APNIC address blocks: 16096
Unique aggregates announced from the APNIC address blocks: 9856
APNIC Region origin ASes present in the Internet Routing Table: 1451
APNIC Region origin ASes announcing only one prefix: 482
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 79371328
Equivalent to 4 /8s, 187 /16s and 28 /24s
Percentage of available APNIC address space announced: 58.7
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: 72586
Total ARIN prefixes after maximum aggregation: 47338
Prefixes being announced from the ARIN address blocks: 51209
Unique aggregates announced from the ARIN address blocks: 17187
ARIN Region origin ASes present in the Internet Routing Table: 7403
ARIN Region origin ASes announcing only one prefix: 2295
ARIN Region transit ASes present in the Internet Routing Table: 767
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 185661508
Equivalent to 11 /8s, 16 /16s and 248 /24s
Percentage of available ARIN address space announced: 69.2
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: 17975
Total RIPE prefixes after maximum aggregation: 14063
Prefixes being announced from the RIPE address blocks: 14788
Unique aggregates announced from the RIPE address blocks: 9363
RIPE Region origin ASes present in the Internet Routing Table: 3603
RIPE Region origin ASes announcing only one prefix: 1954
RIPE Region transit ASes present in the Internet Routing Table: 658
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 113328896
Equivalent to 6 /8s, 193 /16s and 67 /24s
Percentage of available RIPE address space announced: 75.1
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 1325 1259 970 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 401 362 304 UUNET Technologies, Inc.
2907 395 1893 364 SINET Japan
2764 392 361 369 connect.com.au pty ltd
7474 303 290 206 Optus Communications Pty Ltd
4755 296 111 86 Videsh Sanchar Nigam Ltd. Aut
4134 269 1858 100 Data Communications Bureau
9394 229 112 3 CHINA RAILWAY Internet(CRNET)
17557 208 16 91 Pakistan Telecom
4766 206 1393 145 Korea Internet Exchange for "
9443 160 44 59 Primus Telecommunications
1659 152 924 34 Taiwan Academic Network (TANe
7539 152 121 147 TANet2, sponsored by NSC, TAI
9768 146 385 88 Korea Telecom
9583 139 32 5 Satyam Infoway Ltd.,
4197 131 13 5 Global OnLine Japan K.K.
4740 126 17 106 OzEmail ISP
7657 120 21 83 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1109 2619 862 UUNET Technologies, Inc.
3301 400 924 353 TeliaNet Sweden
1257 252 487 248 SWIPnet Swedish IP Network
3215 242 570 156 France Telecom / &Equant
680 233 2148 231 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 166 289 120 LANLINK autonomous system
8708 159 21 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 122 576 122 Swisscom Ltd
8297 118 4136 67 Teleglobe Autonomous System i
3269 117 693 71 TELECOM ITALIA
12302 114 7 35 MobiFon S.A.
517 102 227 100 KPNQwest Germany GmbH
5603 93 12 59 SiOL Internet d.o.o.
5511 92 192 81 France Telecom
1267 91 1471 41 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2089 8319 1511 UUNET Technologies, Inc.
7018 1232 7510 928 AT&T
1 841 8153 612 BBN Planet
3908 809 1662 469 Supernet, Inc.
1239 789 3215 610 Sprint
4323 634 431 238 Time Warner Communications, I
7046 631 849 415 UUNET Technologies, Inc.
852 619 1141 412 Telus Advanced Communications
209 526 1908 302 Qwest
690 507 73 323 Merit Network
7132 455 508 163 Southwestern Bell Internet Se
2914 451 2194 420 Verio, Inc.
3549 426 821 217 Global Crossing
705 392 117 275 UUNET Technologies, Inc.
2149 391 210 327 Performance Systems, Inc.
3561 365 2221 321 Cable & Wireless USA
577 352 604 219 Bell Advanced Communications
3741 348 731 239 The Internet Solution
2386 330 356 191 AT&T Data Communications Serv
6197 326 227 169 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 634 396 Time Warner Communications, I
1221 1325 355 Telstra Pty Ltd
3908 809 340 Supernet, Inc.
7018 1232 304 AT&T
4151 311 295 USDA
7132 455 292 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1109 247 UUNET Technologies, Inc.
6347 311 232 SAVVIS Communications Corpora
1 841 229 BBN Planet
9394 229 226 CHINA RAILWAY Internet(CRNET)
209 526 224 Qwest
7843 260 222 Adelphia Corp.
7046 631 216 UUNET Technologies, Inc.
4755 296 210 Videsh Sanchar Nigam Ltd. Aut
3549 426 209 Global Crossing
852 619 207 Telus Advanced Communications
4355 233 204 EarthLink, Inc.
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
126.0.0.0/8 7336 Compass Communications
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 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:393 /16:7149 /17:1423 /18:2496
/19:7347 /20:6711 /21:4811 /22:7272 /23:8964 /24:60208
/25:221 /26:274 /27:126 /28:100 /29:100 /30:162
/31:0 /32:39
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1337 2089 UUNET Technologies, Inc.
1221 1178 1325 Telstra Pty Ltd
702 733 1109 UUNET Technologies, Inc.
7018 645 1232 AT&T
3908 564 809 Supernet, Inc.
4323 517 634 Time Warner Communications, I
690 503 507 Merit Network
1239 466 789 Sprint
7046 459 631 UUNET Technologies, Inc.
1 434 841 BBN Planet
852 375 619 Telus Advanced Communications
2764 348 392 connect.com.au pty ltd
209 347 526 Qwest
705 337 392 UUNET Technologies, Inc.
703 324 401 UUNET Technologies, Inc.
2149 298 391 Performance Systems, Inc.
3549 294 426 Global Crossing
7066 275 304 Virginia Polytechnic Institut
6197 273 326 BellSouth Network Solutions,
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:467 13:10 15:1 17:5
20:5 24:664 25:1 32:68 38:9 40:6
44:1 57:14 61:216 62:163 63:1882 64:1100
65:1025 66:665 67:33 68:5 80:179 81:4
128:65 129:119 130:22 131:52 132:11 133:3
134:128 135:10 136:244 137:104 138:148 139:47
140:163 141:61 142:67 143:38 144:154 145:12
146:215 147:148 148:144 149:86 150:40 151:43
152:338 153:32 154:8 155:81 156:77 157:119
158:80 159:87 160:24 161:55 162:101 163:127
164:95 165:126 166:222 167:167 168:113 169:48
170:291 171:3 192:5446 193:2231 194:2029 195:793
196:446 198:3733 199:3259 200:2320 201:1 202:2940
203:4530 204:3298 205:2148 206:2583 207:2618 208:2585
209:2873 210:542 211:146 212:870 213:553 214:9
215:19 216:2943 217:440 218:10
End of report
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