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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 21 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108298
Prefixes after maximum aggregation: 72163
Unique aggregates announced to Internet: 52239
Total ASes present in the Internet Routing Table: 12403
Origin-only ASes present in the Internet Routing Table: 10752
Origin ASes announcing only one prefix: 4673
Transit ASes present in the Internet Routing Table: 1651
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: 5
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: 1178174600
Equivalent to 70 /8s, 57 /16s and 132 /24s
Percentage of available address space announced: 31.8
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72416
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17216
Total APNIC prefixes after maximum aggregation: 10619
Prefixes being announced from the APNIC address blocks: 15694
Unique aggregates announced from the APNIC address blocks: 9760
APNIC Region origin ASes present in the Internet Routing Table: 1432
APNIC Region origin ASes announcing only one prefix: 470
APNIC Region transit ASes present in the Internet Routing Table: 249
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78694464
Equivalent to 4 /8s, 176 /16s and 200 /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: 73209
Total ARIN prefixes after maximum aggregation: 47620
Prefixes being announced from the ARIN address blocks: 51933
Unique aggregates announced from the ARIN address blocks: 17134
ARIN Region origin ASes present in the Internet Routing Table: 7345
ARIN Region origin ASes announcing only one prefix: 2275
ARIN Region transit ASes present in the Internet Routing Table: 751
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184169156
Equivalent to 10 /8s, 250 /16s and 50 /24s
Percentage of available ARIN address space announced: 68.6
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: 17870
Total RIPE prefixes after maximum aggregation: 13924
Prefixes being announced from the RIPE address blocks: 14617
Unique aggregates announced from the RIPE address blocks: 9739
RIPE Region origin ASes present in the Internet Routing Table: 3566
RIPE Region origin ASes announcing only one prefix: 1928
RIPE Region transit ASes present in the Internet Routing Table: 642
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106001152
Equivalent to 6 /8s, 81 /16s and 115 /24s
Percentage of available RIPE address space announced: 70.2
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 1334 1243 978 Telstra Pty Ltd
4538 448 1098 14 China Education and Research
703 397 340 302 UUNET Technologies, Inc.
2907 395 1909 365 SINET Japan
2764 394 377 370 connect.com.au pty ltd
7474 314 286 205 Optus Communications Pty Ltd
4755 306 114 90 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 197 1392 148 Korea Internet Exchange for "
17557 183 14 84 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 147 123 146 TANet2, sponsored by NSC, TAI
4740 145 34 119 OzEmail ISP
9768 144 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
9583 138 32 5 Satyam Infoway Ltd.,
7657 124 21 84 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4713 115 894 102 NTT Communications Corporatio
4780 114 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1087 2619 855 UUNET Technologies, Inc.
3301 399 924 350 TeliaNet Sweden
1257 255 489 249 SWIPnet Swedish IP Network
680 234 2149 232 DFN-IP service G-WiN
3215 234 562 152 France Telecom / &Equant
5515 219 705 176 Sonera Finland Autonomous Sys
3320 192 1961 170 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 155 62 86 Concert European Core Network
8708 151 20 140 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
8297 115 40 66 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 104 227 102 KPNQwest Germany GmbH
1290 96 412 71 PSINet UK Ltd.
5549 93 75 57 Nextra Deutschland GmbH + Co.
1267 92 1471 42 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2114 8374 1530 UUNET Technologies, Inc.
7018 1724 7569 976 AT&T
1 833 8264 614 BBN Planet
3908 781 1656 462 Supernet, Inc.
1239 773 3156 604 Sprint
3967 659 368 271 Exodus Communication
7046 650 837 426 UUNET Technologies, Inc.
4323 617 412 216 Time Warner Communications, I
852 565 976 364 Telus Advanced Communications
690 532 76 315 Merit Network
209 513 1875 293 Qwest
705 492 450 308 UUNET Technologies, Inc.
2914 454 2193 423 Verio, Inc.
7132 449 504 159 Southwestern Bell Internet Se
3549 424 836 218 Global Crossing
4293 417 90 310 Cable & Wireless USA
2149 389 214 326 Performance Systems, Inc.
2386 383 354 242 AT&T Data Communications Serv
3561 378 2236 328 Cable & Wireless USA
577 354 604 222 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1724 748 AT&T
4538 448 434 China Education and Research
4323 617 401 Time Warner Communications, I
3967 659 388 Exodus Communication
1221 1334 356 Telstra Pty Ltd
4151 336 320 USDA
3908 781 319 Supernet, Inc.
7132 449 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
6347 324 243 SAVVIS Communications Corpora
702 1087 232 UUNET Technologies, Inc.
7046 650 224 UUNET Technologies, Inc.
209 513 220 Qwest
1 833 219 BBN Planet
690 532 217 Merit Network
4755 306 216 Videsh Sanchar Nigam Ltd. Aut
3549 424 206 Global Crossing
4355 237 206 EarthLink, Inc.
852 565 201 Telus Advanced Communications
7843 239 197 Adelphia Corp.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65505 PRIVATE 63.202.49.0/24 21694 Fresno County Office
65505 PRIVATE 63.207.252.0/22 21694 Fresno County Office
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65001 PRIVATE 212.143.172.0/22 1680 NetVision Elronet As
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
191.9.200.0/24 1290 PSINet UK Ltd.
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
/13:92 /14:230 /15:392 /16:7142 /17:1413 /18:2485
/19:7279 /20:6662 /21:4861 /22:7322 /23:9043 /24:60448
/25:219 /26:210 /27:109 /28:87 /29:60 /30:128
/31:0 /32:35
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1343 2114 UUNET Technologies, Inc.
1221 1186 1334 Telstra Pty Ltd
7018 1146 1724 AT&T
702 708 1087 UUNET Technologies, Inc.
3908 534 781 Supernet, Inc.
690 528 532 Merit Network
4323 508 617 Time Warner Communications, I
7046 483 650 UUNET Technologies, Inc.
3967 468 659 Exodus Communication
1239 450 773 Sprint
1 425 833 BBN Planet
4293 405 417 Cable & Wireless USA
705 359 492 UUNET Technologies, Inc.
852 352 565 Telus Advanced Communications
2764 349 394 connect.com.au pty ltd
209 339 513 Qwest
703 322 397 UUNET Technologies, Inc.
2386 307 383 AT&T Data Communications Serv
2149 292 389 Performance Systems, Inc.
3549 292 424 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:729 13:10 15:2 17:5
20:1 24:709 25:1 32:181 38:12 40:4
43:1 44:2 57:13 61:223 62:161 63:1899
64:1117 65:1009 66:584 67:31 68:19 80:142
81:3 128:63 129:127 130:23 131:44 132:14
133:2 134:120 135:10 136:123 137:103 138:62
139:30 140:100 141:58 142:65 143:42 144:53
145:12 146:213 147:62 148:162 149:86 150:39
151:43 152:390 153:34 154:7 155:83 156:81
157:123 158:72 159:79 160:26 161:55 162:96
163:126 164:133 165:115 166:225 167:158 168:120
169:48 170:281 171:4 191:1 192:5391 193:2096
194:2048 195:799 196:436 198:3766 199:3244 200:2390
201:1 202:2888 203:4502 204:3309 205:2170 206:2731
207:2640 208:2803 209:2920 210:534 211:150 212:880
213:551 214:7 215:17 216:2974 217:415 218:12
End of report
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