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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 28 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107707
Total ASes present in the Internet Routing Table: 12159
Origin-only ASes present in the Internet Routing Table: 10576
Origin ASes announcing only one prefix: 4543
Transit ASes present in the Internet Routing Table: 1583
Transit-only ASes present in the Internet Routing Table: 54
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: 9
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: 1259737086
Equivalent to 75 /8s, 22 /16s and 15 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72760
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16883
Prefixes being announced from the APNIC address blocks: 15385
APNIC Region origin ASes present in the Internet Routing Table: 1409
APNIC Region origin ASes announcing only one prefix: 460
APNIC Region transit ASes present in the Internet Routing Table: 241
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89259854
Equivalent to 5 /8s, 81 /16s and 255 /24s
Percentage of available APNIC address space announced: 75.3
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: 73107
Prefixes being announced from the ARIN address blocks: 52271
ARIN Region origin ASes present in the Internet Routing Table: 7225
ARIN Region origin ASes announcing only one prefix: 2221
ARIN Region transit ASes present in the Internet Routing Table: 728
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221564918
Equivalent to 13 /8s, 52 /16s and 207 /24s
Percentage of available ARIN address space announced: 82.5
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: 17711
Prefixes being announced from the RIPE address blocks: 14416
RIPE Region origin ASes present in the Internet Routing Table: 3472
RIPE Region origin ASes announcing only one prefix: 1862
RIPE Region transit ASes present in the Internet Routing Table: 604
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 110598580
Equivalent to 6 /8s, 151 /16s and 153 /24s
Percentage of available RIPE address space announced: 73.2
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 Description
1221 1537 1313 Telstra Pty Ltd
2764 409 358 connect.com.au pty ltd
703 380 335 UUNET Technologies, Inc.
2907 371 1847 SINET Japan
7474 299 275 Optus Communications Pty Ltd
4755 298 159 Videsh Sanchar Nigam Ltd. Aut
4134 254 1924 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
9443 174 62 Primus Telecommunications
2521 167 172 PSINet Japan
1659 164 1124 Taiwan Academic Network (TANe
17557 153 12 Pakistan Telecom
9583 149 47 Satyam Infoway Ltd.,
7539 138 150 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
4786 126 15 NetConnect Communications Pty
17676 125 1952 XTAGE CORPORATION
7657 123 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1048 2733 UUNET Technologies, Inc.
3301 431 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 236 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 201 704 Sonera Finland Autonomous Sys
3320 193 1959 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 162 21 Romania Data Systems S.A.
5400 139 64 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
12302 108 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
5511 96 193 France Telecom
8297 96 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2230 9162 UUNET Technologies, Inc.
7018 1088 7347 AT&T
3967 1039 482 Exodus Communication
1 846 8533 BBN Planet
1239 729 3388 Sprint
7046 724 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 695 1549 Supernet, Inc.
209 596 2216 Qwest
4323 584 476 Time Warner Communications, I
852 538 696 Telus Advanced Communications
690 502 71 Merit Network
2914 477 2268 Verio, Inc.
2149 452 252 Performance Systems, Inc.
705 437 251 UUNET Technologies, Inc.
3549 399 889 Global Crossing
7132 385 532 Southwestern Bell Internet Se
3561 384 2288 Cable & Wireless USA
4151 367 1255 USDA
577 352 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2230 9162 UUNET Technologies, Inc.
1221 1537 1313 Telstra Pty Ltd
7018 1088 7347 AT&T
702 1048 2733 UUNET Technologies, Inc.
3967 1039 482 Exodus Communication
1 846 8533 BBN Planet
1239 729 3388 Sprint
7046 724 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 695 1549 Supernet, Inc.
209 596 2216 Qwest
4323 584 476 Time Warner Communications, I
852 538 696 Telus Advanced Communications
690 502 71 Merit Network
2914 477 2268 Verio, Inc.
2149 452 252 Performance Systems, Inc.
705 437 251 UUNET Technologies, Inc.
3301 431 934 TeliaNet Sweden
2764 409 358 connect.com.au pty ltd
3549 399 889 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65025 PRIVATE 168.95.70.0/24 3462 Data Communication B
65025 PRIVATE 168.95.71.0/24 3462 Data Communication B
65025 PRIVATE 168.95.86.32/27 3462 Data Communication B
65026 PRIVATE 168.95.86.128/27 3462 Data Communication B
65026 PRIVATE 168.95.160.0/24 3462 Data Communication B
65026 PRIVATE 168.95.161.0/24 3462 Data Communication B
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
17940 UNALLOCATED 218.45.0.0/20 4713 NTT Communications C
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
/13:90 /14:221 /15:386 /16:7076 /17:1345 /18:2439
/19:7101 /20:6076 /21:4688 /22:7066 /23:8839 /24:60749
/25:330 /26:321 /27:264 /28:238 /29:153 /30:181
/31:0 /32:66
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1422 2230 UUNET Technologies, Inc.
1221 1392 1537 Telstra Pty Ltd
3967 857 1039 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 658 1048 UUNET Technologies, Inc.
7018 559 1088 AT&T
7046 558 724 UUNET Technologies, Inc.
690 499 502 Merit Network
4323 495 584 Time Warner Communications, I
3908 472 695 Supernet, Inc.
209 425 596 Qwest
1 414 846 BBN Planet
1239 408 729 Sprint
2764 366 409 connect.com.au pty ltd
852 358 538 Telus Advanced Communications
705 344 437 UUNET Technologies, Inc.
2149 344 452 Performance Systems, Inc.
4151 322 367 USDA
703 310 380 UUNET Technologies, Inc.
11371 272 279 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:423 13:10 15:1 17:5
20:1 24:861 25:1 26:1 32:72 38:13
40:1 43:1 44:2 47:2 52:1 53:2
57:12 61:127 62:150 63:1905 64:1490 65:953
66:737 67:7 80:105 128:61 129:110 130:23
131:43 132:14 133:2 134:133 135:10 136:114
137:98 138:63 139:30 140:100 141:58 142:67
143:44 144:54 145:12 146:211 147:91 148:185
149:89 150:42 151:191 152:390 153:37 154:7
155:85 156:91 157:108 158:68 159:71 160:46
161:52 162:82 163:130 164:122 165:99 166:204
167:161 168:118 169:45 170:298 171:2 192:5370
193:2030 194:2078 195:846 196:452 198:3753 199:3387
200:2422 201:1 202:2817 203:4564 204:3331 205:2130
206:2621 207:2659 208:2752 209:2995 210:588 211:145
212:914 213:531 214:9 215:15 216:2956 217:427
218:7
End of report
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