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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 25 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107661
Total ASes present in the Internet Routing Table: 12132
Origin-only ASes present in the Internet Routing Table: 10551
Origin ASes announcing only one prefix: 4519
Transit ASes present in the Internet Routing Table: 1581
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: 9
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: 1259347369
Equivalent to 75 /8s, 16 /16s and 29 /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: 72743
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16977
Prefixes being announced from the APNIC address blocks: 15464
APNIC Region origin ASes present in the Internet Routing Table: 1406
APNIC Region origin ASes announcing only one prefix: 461
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: 89167450
Equivalent to 5 /8s, 80 /16s and 150 /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: 72882
Prefixes being announced from the ARIN address blocks: 52162
ARIN Region origin ASes present in the Internet Routing Table: 7206
ARIN Region origin ASes announcing only one prefix: 2201
ARIN Region transit ASes present in the Internet Routing Table: 729
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221345451
Equivalent to 13 /8s, 49 /16s and 118 /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: 17796
Prefixes being announced from the RIPE address blocks: 14490
RIPE Region origin ASes present in the Internet Routing Table: 3468
RIPE Region origin ASes announcing only one prefix: 1857
RIPE Region transit ASes present in the Internet Routing Table: 602
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110771424
Equivalent to 6 /8s, 154 /16s and 60 /24s
Percentage of available RIPE address space announced: 73.4
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 1543 1313 Telstra Pty Ltd
2764 406 357 connect.com.au pty ltd
703 380 341 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
4755 343 169 Videsh Sanchar Nigam Ltd. Aut
7474 299 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 186 1431 Korea Internet Exchange for "
4740 178 41 OzEmail ISP
9443 174 62 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
2521 165 172 PSINet Japan
7539 152 138 TANet2, sponsored by NSC, TAI
17557 151 12 Pakistan Telecom
9583 149 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
4786 131 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 1051 2765 UUNET Technologies, Inc.
3301 429 933 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 236 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 200 704 Sonera Finland Autonomous Sys
3320 192 1957 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 169 17 Romania Data Systems S.A.
719 166 292 LANLINK autonomous system
2856 135 778 BTnet UK Regional network
5400 135 62 Concert European Core Network
3303 132 561 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
1273 108 166 Cable & Wireless ECRC GmbH
12302 108 7 MobiFon S.A.
3269 107 809 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
5511 96 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2237 9163 UUNET Technologies, Inc.
7018 1086 7346 AT&T
3967 1039 482 Exodus Communication
1 830 8547 BBN Planet
7046 724 887 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
4323 612 478 Time Warner Communications, I
209 599 2217 Qwest
852 537 696 Telus Advanced Communications
690 498 71 Merit Network
2914 478 2252 Verio, Inc.
2149 467 285 Performance Systems, Inc.
705 434 251 UUNET Technologies, Inc.
3549 397 889 Global Crossing
3561 389 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 368 1255 USDA
577 352 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2237 9163 UUNET Technologies, Inc.
1221 1543 1313 Telstra Pty Ltd
7018 1086 7346 AT&T
702 1051 2765 UUNET Technologies, Inc.
3967 1039 482 Exodus Communication
1 830 8547 BBN Planet
7046 724 887 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
4323 612 478 Time Warner Communications, I
209 599 2217 Qwest
852 537 696 Telus Advanced Communications
690 498 71 Merit Network
2914 478 2252 Verio, Inc.
2149 467 285 Performance Systems, Inc.
705 434 251 UUNET Technologies, Inc.
3301 429 933 TeliaNet Sweden
2764 406 357 connect.com.au pty ltd
3549 397 889 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
100.0.0.0/24 10061 Financial Supervisory Service
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 /15:387 /16:7071 /17:1344 /18:2436
/19:7088 /20:6072 /21:4694 /22:7083 /23:8845 /24:60664
/25:332 /26:322 /27:268 /28:248 /29:156 /30:193
/31:0 /32:69
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1433 2237 UUNET Technologies, Inc.
1221 1398 1543 Telstra Pty Ltd
3967 857 1039 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 659 1051 UUNET Technologies, Inc.
7018 558 1086 AT&T
7046 558 724 UUNET Technologies, Inc.
4323 523 612 Time Warner Communications, I
690 495 498 Merit Network
3908 472 694 Supernet, Inc.
209 428 599 Qwest
1239 401 722 Sprint
1 397 830 BBN Planet
2764 363 406 connect.com.au pty ltd
852 358 537 Telus Advanced Communications
2149 353 467 Performance Systems, Inc.
705 341 434 UUNET Technologies, Inc.
4151 323 368 USDA
703 310 380 UUNET Technologies, Inc.
4755 295 343 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:420 13:10 15:1 17:5
20:1 24:837 25:1 26:1 32:76 38:13
40:1 43:1 44:2 47:2 52:1 53:2
57:12 61:124 62:160 63:1897 64:1465 65:947
66:732 67:7 80:97 100:1 128:61 129:111
130:23 131:41 132:12 133:2 134:131 135:10
136:103 137:98 138:60 139:34 140:89 141:58
142:67 143:43 144:55 145:12 146:210 147:61
148:184 149:88 150:42 151:191 152:386 153:37
154:8 155:85 156:90 157:107 158:68 159:71
160:46 161:51 162:82 163:129 164:122 165:99
166:203 167:160 168:118 169:45 170:297 171:2
192:5368 193:2035 194:2078 195:849 196:444 198:3750
199:3366 200:2419 201:1 202:2869 203:4591 204:3320
205:2119 206:2638 207:2660 208:2750 209:2969 210:590
211:142 212:939 213:528 214:9 215:15 216:2972
217:427 218:6
End of report
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