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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 29 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107624
Total ASes present in the Internet Routing Table: 12176
Origin-only ASes present in the Internet Routing Table: 10577
Origin ASes announcing only one prefix: 4557
Transit ASes present in the Internet Routing Table: 1599
Transit-only ASes present in the Internet Routing Table: 56
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: 1260129456
Equivalent to 75 /8s, 28 /16s and 12 /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: 72664
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16937
Prefixes being announced from the APNIC address blocks: 15434
APNIC Region origin ASes present in the Internet Routing Table: 1412
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 242
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89472796
Equivalent to 5 /8s, 85 /16s and 63 /24s
Percentage of available APNIC address space announced: 75.5
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: 72983
Prefixes being announced from the ARIN address blocks: 52207
ARIN Region origin ASes present in the Internet Routing Table: 7230
ARIN Region origin ASes announcing only one prefix: 2227
ARIN Region transit ASes present in the Internet Routing Table: 738
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221825898
Equivalent to 13 /8s, 56 /16s and 203 /24s
Percentage of available ARIN address space announced: 82.6
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: 17698
Prefixes being announced from the RIPE address blocks: 14394
RIPE Region origin ASes present in the Internet Routing Table: 3479
RIPE Region origin ASes announcing only one prefix: 1869
RIPE Region transit ASes present in the Internet Routing Table: 607
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110673332
Equivalent to 6 /8s, 152 /16s and 189 /24s
Percentage of available RIPE address space announced: 73.3
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 1534 1312 Telstra Pty Ltd
2764 408 358 connect.com.au pty ltd
703 378 335 UUNET Technologies, Inc.
2907 372 1863 SINET Japan
4755 303 159 Videsh Sanchar Nigam Ltd. Aut
7474 301 286 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 178 41 OzEmail ISP
9443 175 62 Primus Telecommunications
2521 167 172 PSINet Japan
1659 164 1124 Taiwan Academic Network (TANe
17557 162 13 Pakistan Telecom
9583 155 48 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 150 TANet2, sponsored by NSC, TAI
4786 130 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 122 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1052 2750 UUNET Technologies, Inc.
3301 431 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 201 704 Sonera Finland Autonomous Sys
3320 190 1959 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 159 20 Romania Data Systems S.A.
5400 139 62 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
12302 108 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 99 398 PSINet UK Ltd.
8297 96 31 Teleglobe Autonomous System i
5511 95 193 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2222 9161 UUNET Technologies, Inc.
7018 1085 7346 AT&T
3967 1027 483 Exodus Communication
1 844 8533 BBN Planet
1239 730 3388 Sprint
7046 729 889 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
852 537 696 Telus Advanced Communications
690 502 71 Merit Network
2914 480 2268 Verio, Inc.
2149 445 251 Performance Systems, Inc.
705 435 251 UUNET Technologies, Inc.
3549 401 889 Global Crossing
7132 386 534 Southwestern Bell Internet Se
3561 384 2288 Cable & Wireless USA
4151 367 1271 USDA
577 350 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2222 9161 UUNET Technologies, Inc.
1221 1534 1312 Telstra Pty Ltd
7018 1085 7346 AT&T
702 1052 2750 UUNET Technologies, Inc.
3967 1027 483 Exodus Communication
1 844 8533 BBN Planet
1239 730 3388 Sprint
7046 729 889 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
852 537 696 Telus Advanced Communications
690 502 71 Merit Network
2914 480 2268 Verio, Inc.
2149 445 251 Performance Systems, Inc.
705 435 251 UUNET Technologies, Inc.
3301 431 934 TeliaNet Sweden
2764 408 358 connect.com.au pty ltd
3549 401 889 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 /16:7075 /17:1351 /18:2451
/19:7102 /20:6092 /21:4693 /22:7075 /23:8838 /24:60643
/25:329 /26:313 /27:262 /28:234 /29:144 /30:179
/31:0 /32:68
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1417 2222 UUNET Technologies, Inc.
1221 1389 1534 Telstra Pty Ltd
3967 844 1027 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 660 1052 UUNET Technologies, Inc.
7046 562 729 UUNET Technologies, Inc.
7018 560 1085 AT&T
690 499 502 Merit Network
4323 495 584 Time Warner Communications, I
3908 471 695 Supernet, Inc.
209 425 596 Qwest
1 412 844 BBN Planet
1239 408 730 Sprint
2764 365 408 connect.com.au pty ltd
852 358 537 Telus Advanced Communications
705 343 435 UUNET Technologies, Inc.
2149 336 445 Performance Systems, Inc.
4151 322 367 USDA
703 308 378 UUNET Technologies, Inc.
11371 272 279 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:425 13:10 15:1 17:5
20:1 24:863 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 64:1494 65:954
66:738 67:8 80:106 128:61 129:110 130:23
131:43 132:14 133:2 134:136 135:10 136:114
137:101 138:63 139:30 140:99 141:59 142:64
143:44 144:54 145:13 146:211 147:91 148:128
149:89 150:42 151:191 152:393 153:37 154:7
155:92 156:91 157:109 158:69 159:71 160:46
161:52 162:82 163:129 164:122 165:99 166:205
167:162 168:118 169:45 170:302 171:2 192:5371
193:2029 194:2081 195:820 196:444 198:3738 199:3385
200:2404 201:1 202:2844 203:4573 204:3312 205:2132
206:2615 207:2660 208:2738 209:2990 210:592 211:145
212:911 213:537 214:9 215:15 216:2944 217:421
218:7
End of report
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