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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 15:59 16 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108746
Total ASes present in the Internet Routing Table: 12102
Origin-only ASes present in the Internet Routing Table: 10516
Origin ASes announcing only one prefix: 4493
Transit ASes present in the Internet Routing Table: 1586
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: 17
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: 1258503742
Equivalent to 75 /8s, 3 /16s and 62 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.8
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 73875
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16938
Prefixes being announced from the APNIC address blocks: 15427
APNIC Region origin ASes present in the Internet Routing Table: 1403
APNIC Region origin ASes announcing only one prefix: 458
APNIC Region transit ASes present in the Internet Routing Table: 238
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 88722594
Equivalent to 5 /8s, 73 /16s and 204 /24s
Percentage of available APNIC address space announced: 74.9
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 73959
Prefixes being announced from the ARIN address blocks: 52733
ARIN Region origin ASes present in the Internet Routing Table: 7199
ARIN Region origin ASes announcing only one prefix: 2200
ARIN Region transit ASes present in the Internet Routing Table: 732
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221179074
Equivalent to 13 /8s, 46 /16s and 236 /24s
Percentage of available ARIN address space announced: 82.4
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: 17848
Prefixes being announced from the RIPE address blocks: 14476
RIPE Region origin ASes present in the Internet Routing Table: 3447
RIPE Region origin ASes announcing only one prefix: 1835
RIPE Region transit ASes present in the Internet Routing Table: 603
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 110147084
Equivalent to 6 /8s, 144 /16s and 182 /24s
Percentage of available RIPE address space announced: 72.9
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 Description
1221 1539 1303 Telstra Pty Ltd
2764 413 380 connect.com.au pty ltd
703 397 360 UUNET Technologies, Inc.
2907 372 1848 SINET Japan
4755 357 169 Videsh Sanchar Nigam Ltd. Aut
7474 298 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 184 1431 Korea Internet Exchange for "
4740 169 24 OzEmail ISP
17676 168 1957 XTAGE CORPORATION
9443 167 53 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
17557 151 12 Pakistan Telecom
7539 146 145 TANet2, sponsored by NSC, TAI
9583 138 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
2521 136 171 PSINet Japan
4786 131 15 NetConnect Communications Pty
9768 128 362 Korea Telecom
7657 121 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1082 2146 UUNET Technologies, Inc.
3301 433 949 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 234 568 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 197 688 Sonera Finland Autonomous Sys
3320 196 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 169 17 Romania Data Systems S.A.
5400 137 62 Concert European Core Network
719 133 289 LANLINK autonomous system
2856 133 777 BTnet UK Regional network
3303 131 560 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
12302 108 7 MobiFon S.A.
1273 107 165 Cable & Wireless ECRC GmbH
3269 105 808 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 99 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2236 9178 UUNET Technologies, Inc.
7018 1084 7300 AT&T
3967 1056 483 Exodus Communication
1 841 8488 BBN Planet
7046 824 973 UUNET Technologies, Inc.
1239 722 3369 Sprint
8010 718 98 PublicNet Communications, Inc
3908 685 1532 Supernet, Inc.
209 580 2216 Qwest
852 520 695 Telus Advanced Communications
4323 506 414 Time Warner Communications, I
690 499 87 Merit Network
2914 483 2270 Verio, Inc.
2149 481 333 Performance Systems, Inc.
4293 444 112 Cable & Wireless USA
705 426 249 UUNET Technologies, Inc.
3549 391 887 Global Crossing
3561 374 2302 Cable & Wireless USA
4151 365 1254 USDA
3741 352 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2236 9178 UUNET Technologies, Inc.
1221 1539 1303 Telstra Pty Ltd
7018 1084 7300 AT&T
702 1082 2146 UUNET Technologies, Inc.
3967 1056 483 Exodus Communication
1 841 8488 BBN Planet
7046 824 973 UUNET Technologies, Inc.
1239 722 3369 Sprint
8010 718 98 PublicNet Communications, Inc
3908 685 1532 Supernet, Inc.
209 580 2216 Qwest
852 520 695 Telus Advanced Communications
4323 506 414 Time Warner Communications, I
690 499 87 Merit Network
2914 483 2270 Verio, Inc.
2149 481 333 Performance Systems, Inc.
4293 444 112 Cable & Wireless USA
3301 433 949 TeliaNet Sweden
705 426 249 UUNET Technologies, Inc.
2764 413 380 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65000 PRIVATE 203.21.200.0/24 1221 Telstra Pty Ltd
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
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
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 /11:12 /12:36
/13:89 /14:220 /15:386 /16:7069 /17:1356 /18:2420
/19:7061 /20:6035 /21:4742 /22:7132 /23:8944 /24:61630
/25:332 /26:322 /27:272 /28:251 /29:158 /30:183
/31:0 /32:66
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1426 2236 UUNET Technologies, Inc.
1221 1397 1539 Telstra Pty Ltd
3967 873 1056 Exodus Communication
702 737 1082 UUNET Technologies, Inc.
8010 703 718 PublicNet Communications, Inc
7046 655 824 UUNET Technologies, Inc.
7018 560 1084 AT&T
690 495 499 Merit Network
3908 463 685 Supernet, Inc.
4323 437 506 Time Warner Communications, I
4293 429 444 Cable & Wireless USA
209 407 580 Qwest
1 406 841 BBN Planet
1239 404 722 Sprint
2764 366 413 connect.com.au pty ltd
2149 359 481 Performance Systems, Inc.
852 340 520 Telus Advanced Communications
705 336 426 UUNET Technologies, Inc.
703 326 397 UUNET Technologies, Inc.
4151 320 365 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:424 13:10 15:1 17:5
20:1 24:845 25:1 26:1 32:73 38:13
43:2 44:2 47:2 52:1 53:9 57:12
61:124 62:154 63:1905 64:1503 65:916 66:718
67:6 80:104 128:61 129:113 130:23 131:42
132:13 133:2 134:134 135:10 136:119 137:99
138:197 139:47 140:173 141:58 142:67 143:43
144:148 145:11 146:207 147:133 148:181 149:86
150:42 151:191 152:383 153:71 154:8 155:84
156:91 157:107 158:69 159:70 160:46 161:51
162:77 163:129 164:129 165:122 166:207 167:161
168:119 169:46 170:297 171:2 192:5384 193:2042
194:2057 195:861 196:461 198:3757 199:3444 200:2378
201:1 202:2844 203:4585 204:3357 205:2144 206:2770
207:2650 208:2969 209:2972 210:541 211:150 212:964
213:534 214:9 215:16 216:2992 217:435 218:6
End of report
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