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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 27 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107514
Prefixes after maximum aggregation: 71770
Unique aggregates announced to Internet: 52436
Total ASes present in the Internet Routing Table: 12436
Origin-only ASes present in the Internet Routing Table: 10761
Origin ASes announcing only one prefix: 4686
Transit ASes present in the Internet Routing Table: 1675
Transit-only ASes present in the Internet Routing Table: 60
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1162899848
Equivalent to 69 /8s, 80 /16s and 113 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71598
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17147
Total APNIC prefixes after maximum aggregation: 10581
Prefixes being announced from the APNIC address blocks: 15637
Unique aggregates announced from the APNIC address blocks: 9825
APNIC Region origin ASes present in the Internet Routing Table: 1437
APNIC Region origin ASes announcing only one prefix: 477
APNIC Region transit ASes present in the Internet Routing Table: 254
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78760512
Equivalent to 4 /8s, 177 /16s and 202 /24s
Percentage of available APNIC address space announced: 58.2
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: 72443
Total ARIN prefixes after maximum aggregation: 47268
Prefixes being announced from the ARIN address blocks: 51151
Unique aggregates announced from the ARIN address blocks: 17129
ARIN Region origin ASes present in the Internet Routing Table: 7357
ARIN Region origin ASes announcing only one prefix: 2273
ARIN Region transit ASes present in the Internet Routing Table: 755
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184881860
Equivalent to 11 /8s, 5 /16s and 18 /24s
Percentage of available ARIN address space announced: 68.9
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: 17924
Total RIPE prefixes after maximum aggregation: 13921
Prefixes being announced from the RIPE address blocks: 14700
Unique aggregates announced from the RIPE address blocks: 9801
RIPE Region origin ASes present in the Internet Routing Table: 3581
RIPE Region origin ASes announcing only one prefix: 1936
RIPE Region transit ASes present in the Internet Routing Table: 655
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106223872
Equivalent to 6 /8s, 84 /16s and 217 /24s
Percentage of available RIPE address space announced: 70.3
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 1337 1260 976 Telstra Pty Ltd
4538 450 1162 16 China Education and Research
703 402 342 306 UUNET Technologies, Inc.
2764 397 377 371 connect.com.au pty ltd
2907 394 1893 364 SINET Japan
7474 300 286 205 Optus Communications Pty Ltd
4134 268 1858 100 Data Communications Bureau
4755 265 112 81 Videsh Sanchar Nigam Ltd. Aut
4766 208 1394 147 Korea Internet Exchange for "
17557 191 14 88 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
9768 145 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
4740 143 34 117 OzEmail ISP
9583 133 32 5 Satyam Infoway Ltd.,
7657 125 22 85 The Internet Group Limited
7539 122 132 121 TANet2, sponsored by NSC, TAI
4780 116 186 40 Digital United Inc.
4713 115 894 102 NTT Communications Corporatio
9800 113 193 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1115 2622 862 UUNET Technologies, Inc.
3301 396 924 350 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 236 562 153 France Telecom / &Equant
680 235 2149 233 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
3320 194 1961 171 Deutsche Telekom AG
5400 186 77 92 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 152 20 142 Romania Data Systems S.A.
2856 130 774 119 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 118 695 72 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 113 7 34 MobiFon S.A.
517 103 227 101 KPNQwest Germany GmbH
1290 94 411 69 PSINet UK Ltd.
1267 92 1471 42 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 2086 8301 1506 UUNET Technologies, Inc.
7018 1748 7554 983 AT&T
1 838 8152 611 BBN Planet
3908 790 1656 466 Supernet, Inc.
1239 779 3157 607 Sprint
7046 622 836 418 UUNET Technologies, Inc.
4323 620 414 220 Time Warner Communications, I
852 564 978 364 Telus Advanced Communications
209 515 1875 294 Qwest
690 511 74 314 Merit Network
2914 454 2193 421 Verio, Inc.
7132 452 504 162 Southwestern Bell Internet Se
3549 428 835 222 Global Crossing
705 423 143 283 UUNET Technologies, Inc.
2149 389 214 326 Performance Systems, Inc.
2386 387 354 244 AT&T Data Communications Serv
3561 382 2236 332 Cable & Wireless USA
3967 374 372 201 Exodus Communication
3741 350 731 239 The Internet Solution
577 349 604 219 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1748 765 AT&T
4538 450 434 China Education and Research
4323 620 400 Time Warner Communications, I
1221 1337 361 Telstra Pty Ltd
3908 790 324 Supernet, Inc.
4151 337 321 USDA
7132 452 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1115 253 UUNET Technologies, Inc.
6347 314 233 SAVVIS Communications Corpora
1 838 227 BBN Planet
209 515 221 Qwest
7843 259 220 Adelphia Corp.
4355 237 207 EarthLink, Inc.
3549 428 206 Global Crossing
7046 622 204 UUNET Technologies, Inc.
852 564 200 Telus Advanced Communications
690 511 197 Merit Network
6517 221 193 Yipes Communications, Inc.
6172 240 189 @Home Network
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23098 UNALLOCATED 144.9.72.0/24 12179 InterNAP Network Ser
23098 UNALLOCATED 144.9.73.0/24 12179 InterNAP Network Ser
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
126.0.0.0/8 7336 Compass Communications
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 Headquarters Standard Systems
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 /8:18 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:390 /16:7143 /17:1414 /18:2484
/19:7301 /20:6670 /21:4809 /22:7271 /23:8945 /24:59846
/25:216 /26:205 /27:111 /28:83 /29:57 /30:130
/31:0 /32:37
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1335 2086 UUNET Technologies, Inc.
1221 1187 1337 Telstra Pty Ltd
7018 1160 1748 AT&T
702 738 1115 UUNET Technologies, Inc.
3908 543 790 Supernet, Inc.
4323 509 620 Time Warner Communications, I
690 507 511 Merit Network
1239 461 779 Sprint
7046 451 622 UUNET Technologies, Inc.
1 433 838 BBN Planet
2764 352 397 connect.com.au pty ltd
705 351 423 UUNET Technologies, Inc.
852 351 564 Telus Advanced Communications
209 338 515 Qwest
703 328 402 UUNET Technologies, Inc.
2386 311 387 AT&T Data Communications Serv
3549 296 428 Global Crossing
2149 292 389 Performance Systems, Inc.
4151 291 337 USDA
7066 275 304 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:736 13:10 15:1 17:5
20:1 24:691 25:1 32:181 38:12 40:4
44:2 57:14 61:209 62:167 63:1874 64:1096
65:997 66:609 67:36 68:20 80:169 81:4
128:62 129:128 130:23 131:51 132:13 133:2
134:120 135:10 136:128 137:104 138:61 139:29
140:94 141:59 142:65 143:38 144:56 145:12
146:213 147:60 148:141 149:86 150:39 151:43
152:381 153:34 154:8 155:79 156:81 157:124
158:73 159:86 160:26 161:54 162:96 163:124
164:74 165:125 166:225 167:161 168:121 169:48
170:285 171:4 192:5435 193:2111 194:2028 195:791
196:436 198:3744 199:3249 200:2297 201:1 202:2854
203:4500 204:3298 205:2138 206:2604 207:2642 208:2590
209:2860 210:525 211:150 212:873 213:590 214:7
215:16 216:2966 217:441 218:12
End of report
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