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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 Sat 26 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107702
Prefixes after maximum aggregation: 71806
Unique aggregates announced to Internet: 52400
Total ASes present in the Internet Routing Table: 12435
Origin-only ASes present in the Internet Routing Table: 10764
Origin ASes announcing only one prefix: 4685
Transit ASes present in the Internet Routing Table: 1671
Transit-only ASes present in the Internet Routing Table: 58
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: 1163074952
Equivalent to 69 /8s, 83 /16s and 29 /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: 71814
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17169
Total APNIC prefixes after maximum aggregation: 10600
Prefixes being announced from the APNIC address blocks: 15678
Unique aggregates announced from the APNIC address blocks: 9848
APNIC Region origin ASes present in the Internet Routing Table: 1441
APNIC Region origin ASes announcing only one prefix: 476
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: 14
Number of APNIC addresses announced to Internet: 78775616
Equivalent to 4 /8s, 178 /16s and 5 /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: 72594
Total ARIN prefixes after maximum aggregation: 47293
Prefixes being announced from the ARIN address blocks: 51322
Unique aggregates announced from the ARIN address blocks: 17130
ARIN Region origin ASes present in the Internet Routing Table: 7355
ARIN Region origin ASes announcing only one prefix: 2275
ARIN Region transit ASes present in the Internet Routing Table: 756
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184883396
Equivalent to 11 /8s, 5 /16s and 24 /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: 17939
Total RIPE prefixes after maximum aggregation: 13913
Prefixes being announced from the RIPE address blocks: 14704
Unique aggregates announced from the RIPE address blocks: 9791
RIPE Region origin ASes present in the Internet Routing Table: 3580
RIPE Region origin ASes announcing only one prefix: 1934
RIPE Region transit ASes present in the Internet Routing Table: 653
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106237696
Equivalent to 6 /8s, 85 /16s and 15 /24s
Percentage of available RIPE address space announced: 70.4
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 447 1162 16 China Education and Research
703 401 342 305 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 268 112 83 Videsh Sanchar Nigam Ltd. Aut
4766 198 1393 145 Korea Internet Exchange for "
17557 189 14 87 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 135 775 124 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 115 7 36 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 2092 8307 1512 UUNET Technologies, Inc.
7018 1746 7561 977 AT&T
1 845 8264 613 BBN Planet
3908 788 1656 465 Supernet, Inc.
1239 774 3141 603 Sprint
7046 640 837 421 UUNET Technologies, Inc.
4323 623 414 222 Time Warner Communications, I
852 564 978 364 Telus Advanced Communications
209 517 1875 294 Qwest
690 511 74 314 Merit Network
2914 453 2193 422 Verio, Inc.
7132 452 504 162 Southwestern Bell Internet Se
3549 427 835 221 Global Crossing
705 425 148 283 UUNET Technologies, Inc.
2149 395 214 331 Performance Systems, Inc.
2386 385 354 244 AT&T Data Communications Serv
3561 382 2236 332 Cable & Wireless USA
3967 379 372 205 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 1746 769 AT&T
4538 447 431 China Education and Research
4323 623 401 Time Warner Communications, I
1221 1337 361 Telstra Pty Ltd
3908 788 323 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 313 233 SAVVIS Communications Corpora
1 845 232 BBN Planet
209 517 223 Qwest
7843 261 222 Adelphia Corp.
7046 640 219 UUNET Technologies, Inc.
4355 237 207 EarthLink, Inc.
3549 427 206 Global Crossing
852 564 200 Telus Advanced Communications
690 511 197 Merit Network
6172 240 189 @Home Network
7029 204 189 Alltel Information Services,
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
/13:92 /14:231 /15:390 /16:7142 /17:1407 /18:2485
/19:7307 /20:6676 /21:4814 /22:7289 /23:8951 /24:59988
/25:216 /26:205 /27:112 /28:83 /29:58 /30:135
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1337 2092 UUNET Technologies, Inc.
1221 1187 1337 Telstra Pty Ltd
7018 1154 1746 AT&T
702 738 1115 UUNET Technologies, Inc.
3908 541 788 Supernet, Inc.
4323 512 623 Time Warner Communications, I
690 507 511 Merit Network
7046 469 640 UUNET Technologies, Inc.
1239 458 774 Sprint
1 437 845 BBN Planet
2764 352 397 connect.com.au pty ltd
705 351 425 UUNET Technologies, Inc.
852 351 564 Telus Advanced Communications
209 340 517 Qwest
703 327 401 UUNET Technologies, Inc.
2386 309 385 AT&T Data Communications Serv
2149 298 395 Performance Systems, Inc.
3549 295 427 Global Crossing
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 24:702 25:1 32:181 38:12 40:4
44:2 57:14 61:208 62:166 63:1881 64:1102
65:996 66:617 67:34 68:19 80:169 81:4
128:62 129:134 130:23 131:49 132:13 133:2
134:121 135:10 136:124 137:104 138:61 139:29
140:94 141:59 142:65 143:38 144:56 145:12
146:212 147:62 148:142 149:86 150:39 151:43
152:381 153:34 154:8 155:83 156:81 157:125
158:73 159:86 160:26 161:55 162:96 163:125
164:75 165:115 166:225 167:161 168:121 169:48
170:286 171:4 192:5402 193:2119 194:2031 195:791
196:436 198:3742 199:3254 200:2311 201:1 202:2875
203:4519 204:3295 205:2144 206:2605 207:2646 208:2593
209:2907 210:531 211:152 212:883 213:575 214:7
215:16 216:2988 217:437 218:12
End of report
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