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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 02 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107479
Total ASes present in the Internet Routing Table: 12187
Origin-only ASes present in the Internet Routing Table: 10574
Origin ASes announcing only one prefix: 4557
Transit ASes present in the Internet Routing Table: 1613
Transit-only ASes present in the Internet Routing Table: 57
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: 13
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: 1261371334
Equivalent to 75 /8s, 46 /16s and 255 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72449
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16929
Prefixes being announced from the APNIC address blocks: 15426
APNIC Region origin ASes present in the Internet Routing Table: 1408
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 246
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89459726
Equivalent to 5 /8s, 85 /16s and 12 /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: 72789
Prefixes being announced from the ARIN address blocks: 52195
ARIN Region origin ASes present in the Internet Routing Table: 7241
ARIN Region origin ASes announcing only one prefix: 2222
ARIN Region transit ASes present in the Internet Routing Table: 742
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 222246738
Equivalent to 13 /8s, 63 /16s and 55 /24s
Percentage of available ARIN address space announced: 82.8
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: 17754
Prefixes being announced from the RIPE address blocks: 14461
RIPE Region origin ASes present in the Internet Routing Table: 3483
RIPE Region origin ASes announcing only one prefix: 1874
RIPE Region transit ASes present in the Internet Routing Table: 613
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110919060
Equivalent to 6 /8s, 156 /16s and 125 /24s
Percentage of available RIPE address space announced: 73.5
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 1530 1328 Telstra Pty Ltd
2764 395 356 connect.com.au pty ltd
703 384 338 UUNET Technologies, Inc.
2907 370 1863 SINET Japan
7474 305 287 Optus Communications Pty Ltd
4755 304 159 Videsh Sanchar Nigam Ltd. Aut
4134 256 1932 Data Communications Bureau
4766 184 1435 Korea Internet Exchange for "
9443 172 62 Primus Telecommunications
4740 171 36 OzEmail ISP
2521 166 172 PSINet Japan
17557 166 13 Pakistan Telecom
1659 164 1124 Taiwan Academic Network (TANe
9583 154 48 Satyam Infoway Ltd.,
7539 139 134 TANet2, sponsored by NSC, TAI
4812 137 305 China Telecom (Group) - Shang
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 124 23 The Internet Group Limited
4713 121 944 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1084 2767 UUNET Technologies, Inc.
3301 429 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 212 705 Sonera Finland Autonomous Sys
3320 191 1960 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 142 62 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 107 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 98 31 Teleglobe Autonomous System i
5511 93 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2163 9059 UUNET Technologies, Inc.
7018 1094 7362 AT&T
3967 1019 467 Exodus Communication
1 846 8534 BBN Planet
1239 750 3381 Sprint
7046 721 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 697 1549 Supernet, Inc.
209 609 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 503 72 Merit Network
2914 480 2253 Verio, Inc.
705 448 252 UUNET Technologies, Inc.
2149 428 250 Performance Systems, Inc.
3549 406 888 Global Crossing
3561 388 2288 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
4151 353 1270 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2163 9059 UUNET Technologies, Inc.
1221 1530 1328 Telstra Pty Ltd
7018 1094 7362 AT&T
702 1084 2767 UUNET Technologies, Inc.
3967 1019 467 Exodus Communication
1 846 8534 BBN Planet
1239 750 3381 Sprint
7046 721 888 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 697 1549 Supernet, Inc.
209 609 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 503 72 Merit Network
2914 480 2253 Verio, Inc.
705 448 252 UUNET Technologies, Inc.
3301 429 934 TeliaNet Sweden
2149 428 250 Performance Systems, Inc.
3549 406 888 Global Crossing
2764 395 356 connect.com.au pty ltd
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22830 UNALLOCATED 66.100.87.0/24 6347 SAVVIS Communication
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
22830 UNALLOCATED 206.153.0.0/24 6347 SAVVIS Communication
22830 UNALLOCATED 206.153.21.0/24 6347 SAVVIS Communication
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS
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
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 /11:12 /12:37
/13:89 /14:221 /15:386 /16:7077 /17:1362 /18:2454
/19:7104 /20:6150 /21:4686 /22:7083 /23:8812 /24:60416
/25:328 /26:320 /27:265 /28:236 /29:150 /30:187
/31:0 /32:74
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1385 2163 UUNET Technologies, Inc.
1221 1384 1530 Telstra Pty Ltd
3967 837 1019 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 694 1084 UUNET Technologies, Inc.
7018 564 1094 AT&T
7046 557 721 UUNET Technologies, Inc.
690 500 503 Merit Network
4323 495 585 Time Warner Communications, I
3908 474 697 Supernet, Inc.
209 438 609 Qwest
1239 419 750 Sprint
1 416 846 BBN Planet
852 363 543 Telus Advanced Communications
705 355 448 UUNET Technologies, Inc.
2764 353 395 connect.com.au pty ltd
2149 322 428 Performance Systems, Inc.
703 311 384 UUNET Technologies, Inc.
4151 309 353 USDA
3549 276 406 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:426 13:10 15:1 17:5
20:1 24:862 25:1 26:1 32:72 38:12
40:1 43:1 44:2 52:1 53:2 57:12
61:130 62:148 63:1913 64:1486 65:971 66:742
67:8 80:106 128:61 129:111 130:23 131:43
132:14 133:2 134:135 135:10 136:115 137:102
138:63 139:30 140:94 141:59 142:68 143:43
144:54 145:13 146:211 147:90 148:128 149:87
150:42 151:38 152:390 153:37 154:6 155:71
156:82 157:115 158:69 159:73 160:45 161:52
162:84 163:129 164:120 165:96 166:205 167:162
168:119 169:46 170:302 171:2 191:1 192:5367
193:2070 194:2093 195:814 196:428 198:3749 199:3338
200:2389 201:1 202:2842 203:4531 204:3316 205:2141
206:2604 207:2671 208:2727 209:2963 210:595 211:141
212:915 213:535 214:9 215:15 216:2972 217:422
218:7
End of report
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