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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 Wed 19 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107709
Prefixes after maximum aggregation: 71827
Unique aggregates announced to Internet: 51913
Total ASes present in the Internet Routing Table: 12287
Origin-only ASes present in the Internet Routing Table: 10673
Origin ASes announcing only one prefix: 4610
Transit ASes present in the Internet Routing Table: 1614
Transit-only ASes present in the Internet Routing Table: 53
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: 1
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1144295232
Equivalent to 68 /8s, 52 /16s and 143 /24s
Percentage of available address space announced: 30.9
Percentage of allocated address space announced: 58.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72482
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17055
Total APNIC prefixes after maximum aggregation: 10573
Prefixes being announced from the APNIC address blocks: 15468
Unique aggregates announced from the APNIC address blocks: 9790
APNIC Region origin ASes present in the Internet Routing Table: 1425
APNIC Region origin ASes announcing only one prefix: 466
APNIC Region transit ASes present in the Internet Routing Table: 239
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 77758704
Equivalent to 4 /8s, 162 /16s and 128 /24s
Percentage of available APNIC address space announced: 57.5
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: 72811
Total ARIN prefixes after maximum aggregation: 47395
Prefixes being announced from the ARIN address blocks: 52227
Unique aggregates announced from the ARIN address blocks: 16926
ARIN Region origin ASes present in the Internet Routing Table: 7281
ARIN Region origin ASes announcing only one prefix: 2244
ARIN Region transit ASes present in the Internet Routing Table: 735
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 180043724
Equivalent to 10 /8s, 187 /16s and 63 /24s
Percentage of available ARIN address space announced: 67.1
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: 17843
Total RIPE prefixes after maximum aggregation: 13859
Prefixes being announced from the RIPE address blocks: 14552
Unique aggregates announced from the RIPE address blocks: 9636
RIPE Region origin ASes present in the Internet Routing Table: 3527
RIPE Region origin ASes announcing only one prefix: 1900
RIPE Region transit ASes present in the Internet Routing Table: 628
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 104424704
Equivalent to 6 /8s, 57 /16s and 101 /24s
Percentage of available RIPE address space announced: 69.2
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
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 1515 1261 1045 Telstra Pty Ltd
2764 401 376 375 connect.com.au pty ltd
703 395 344 303 UUNET Technologies, Inc.
2907 371 1832 341 SINET Japan
7474 308 285 203 Optus Communications Pty Ltd
4755 301 117 82 Videsh Sanchar Nigam Ltd. Aut
4134 265 1874 96 Data Communications Bureau
4766 184 1391 134 Korea Internet Exchange for "
2521 183 165 29 PSINet Japan
1659 175 924 34 Taiwan Academic Network (TANe
9443 170 45 67 Primus Telecommunications
17557 168 13 82 Pakistan Telecom
4740 154 34 127 OzEmail ISP
9583 150 32 3 Satyam Infoway Ltd.,
7539 146 135 145 TANet2, sponsored by NSC, TAI
4812 137 192 34 China Telecom (Group) - Shang
9768 131 360 83 Korea Telecom
17676 125 1920 7 XTAGE CORPORATION
4713 120 942 107 NTT Communications Corporatio
4780 117 186 42 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1096 2687 865 UUNET Technologies, Inc.
3301 426 910 354 TeliaNet Sweden
1257 253 473 250 SWIPnet Swedish IP Network
3215 238 540 154 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 216 721 176 Sonera Finland Autonomous Sys
3320 186 1960 165 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 147 59 84 Concert European Core Network
8708 145 20 137 Romania Data Systems S.A.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
5549 116 78 61 Nextra Deutschland GmbH + Co.
8895 116 89 40 Saudi Arabia AS
3269 114 662 70 TELECOM ITALIA
12302 111 7 35 MobiFon S.A.
517 110 232 108 KPNQwest Germany GmbH
8297 107 31 64 Teleglobe Autonomous System i
1290 96 396 71 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2176 8859 1540 UUNET Technologies, Inc.
7018 1098 7340 859 AT&T
3967 981 365 498 Exodus Communication
1 858 8405 655 BBN Planet
1239 784 3169 605 Sprint
7046 724 823 452 UUNET Technologies, Inc.
8010 719 62 12 PublicNet Communications, Inc
3908 718 1609 510 Supernet, Inc.
209 611 1877 296 Qwest
4323 586 364 202 Time Warner Communications, I
852 579 978 382 Telus Advanced Communications
690 528 76 315 Merit Network
705 474 349 295 UUNET Technologies, Inc.
2914 467 2228 438 Verio, Inc.
2149 404 230 340 Performance Systems, Inc.
3549 404 837 201 Global Crossing
3561 391 2285 334 Cable & Wireless USA
7132 387 459 167 Southwestern Bell Internet Se
3741 350 730 239 The Internet Solution
577 346 587 216 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 707 PublicNet Communications, Inc
3967 483 Exodus Communication
1221 470 Telstra Pty Ltd
4323 384 Time Warner Communications, I
4151 327 USDA
209 315 Qwest
7046 272 UUNET Technologies, Inc.
11371 271 Rhythms NetConnections
7018 239 AT&T
6347 233 SAVVIS Communications Corpora
702 231 UUNET Technologies, Inc.
7132 220 Southwestern Bell Internet Se
4755 219 Videsh Sanchar Nigam Ltd. Aut
690 213 Merit Network
3908 208 Supernet, Inc.
1 203 BBN Planet
3549 203 Global Crossing
4355 198 EarthLink, Inc.
852 197 Telus Advanced Communications
6517 194 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.168.77.0/24 7539 TANet2, sponsored by NSC, TAI
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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.
153.34.0.0/15 701 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 /8:18 /9:5 /10:7 /11:11 /12:37
/13:89 /14:227 /15:390 /16:7085 /17:1375 /18:2456
/19:7174 /20:6247 /21:4692 /22:7149 /23:8894 /24:60506
/25:313 /26:306 /27:220 /28:181 /29:113 /30:162
/31:0 /32:52
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1394 2176 UUNET Technologies, Inc.
1221 1364 1515 Telstra Pty Ltd
3967 797 981 Exodus Communication
702 712 1096 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 562 1098 AT&T
7046 559 724 UUNET Technologies, Inc.
690 525 528 Merit Network
4323 497 586 Time Warner Communications, I
3908 488 718 Supernet, Inc.
1239 450 784 Sprint
209 440 611 Qwest
1 425 858 BBN Planet
852 368 579 Telus Advanced Communications
705 358 474 UUNET Technologies, Inc.
2764 356 401 connect.com.au pty ltd
703 321 395 UUNET Technologies, Inc.
2149 305 404 Performance Systems, Inc.
4151 297 343 USDA
3549 274 404 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:439 13:10 15:2 17:5
20:1 24:825 25:1 32:73 38:13 40:4
43:1 44:2 52:1 53:2 57:12 61:164
62:153 63:1915 64:1498 65:1013 66:755 67:15
68:2 80:129 128:61 129:110 130:24 131:43
132:14 133:2 134:134 135:10 136:117 137:107
138:62 139:30 140:102 141:57 142:70 143:41
144:55 145:12 146:217 147:94 148:155 149:87
150:41 151:38 152:392 153:34 154:6 155:83
156:85 157:119 158:69 159:76 160:45 161:54
162:86 163:130 164:119 165:98 166:206 167:162
168:117 169:48 170:301 171:2 191:1 192:5350
193:2061 194:2068 195:821 196:430 198:3754 199:3300
200:2395 201:1 202:2870 203:4542 204:3319 205:2166
206:2595 207:2712 208:2620 209:2939 210:572 211:149
212:958 213:545 214:9 215:15 216:2957 217:392
218:11
End of report
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