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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 27 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107851
Total ASes present in the Internet Routing Table: 12152
Origin-only ASes present in the Internet Routing Table: 10566
Origin ASes announcing only one prefix: 4535
Transit ASes present in the Internet Routing Table: 1586
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: 1259252061
Equivalent to 75 /8s, 14 /16s and 169 /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: 72936
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16710
Prefixes being announced from the APNIC address blocks: 15170
APNIC Region origin ASes present in the Internet Routing Table: 1412
APNIC Region origin ASes announcing only one prefix: 462
APNIC Region transit ASes present in the Internet Routing Table: 243
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 88920442
Equivalent to 5 /8s, 76 /16s and 209 /24s
Percentage of available APNIC address space announced: 75.0
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: 73436
Prefixes being announced from the ARIN address blocks: 52237
ARIN Region origin ASes present in the Internet Routing Table: 7220
ARIN Region origin ASes announcing only one prefix: 2216
ARIN Region transit ASes present in the Internet Routing Table: 730
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221433707
Equivalent to 13 /8s, 50 /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: 17699
Prefixes being announced from the RIPE address blocks: 14409
RIPE Region origin ASes present in the Internet Routing Table: 3467
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: 110558901
Equivalent to 6 /8s, 150 /16s and 254 /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 1540 1313 Telstra Pty Ltd
2764 409 358 connect.com.au pty ltd
2907 370 1831 SINET Japan
4755 303 161 Videsh Sanchar Nigam Ltd. Aut
7474 299 275 Optus Communications Pty Ltd
4134 254 1924 Data Communications Bureau
703 191 297 UUNET Technologies, Inc.
4766 187 1431 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
9443 174 62 Primus Telecommunications
2521 167 172 PSINet Japan
1659 161 1123 Taiwan Academic Network (TANe
17557 150 12 Pakistan Telecom
7539 148 153 TANet2, sponsored by NSC, TAI
9583 147 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
4786 130 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
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 1050 2767 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 201 704 Sonera Finland Autonomous Sys
3320 193 1959 Deutsche Telekom AG
786 183 1874 The JANET IP Service
8708 172 17 Romania Data Systems S.A.
719 166 292 LANLINK autonomous system
5400 138 62 Concert European Core Network
2856 135 778 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 106 807 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
5511 97 193 France Telecom
8297 94 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2236 9162 UUNET Technologies, Inc.
7018 1087 7346 AT&T
3967 1039 482 Exodus Communication
1 831 8548 BBN Planet
1239 727 3387 Sprint
7046 724 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
209 596 2216 Qwest
4323 584 476 Time Warner Communications, I
852 538 696 Telus Advanced Communications
690 505 72 Merit Network
2914 479 2268 Verio, Inc.
2149 457 268 Performance Systems, Inc.
3549 401 889 Global Crossing
705 397 249 UUNET Technologies, Inc.
3561 389 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 367 1255 USDA
577 352 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2236 9162 UUNET Technologies, Inc.
1221 1540 1313 Telstra Pty Ltd
7018 1087 7346 AT&T
702 1050 2767 UUNET Technologies, Inc.
3967 1039 482 Exodus Communication
1 831 8548 BBN Planet
1239 727 3387 Sprint
7046 724 887 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
209 596 2216 Qwest
4323 584 476 Time Warner Communications, I
852 538 696 Telus Advanced Communications
690 505 72 Merit Network
2914 479 2268 Verio, Inc.
2149 457 268 Performance Systems, Inc.
3301 429 933 TeliaNet Sweden
2764 409 358 connect.com.au pty ltd
3549 401 889 Global Crossing
705 397 249 UUNET Technologies, Inc.
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 /15:387 /16:7073 /17:1342 /18:2430
/19:7080 /20:6067 /21:4676 /22:7077 /23:8838 /24:60940
/25:331 /26:321 /27:263 /28:238 /29:153 /30:181
/31:0 /32:65
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1430 2236 UUNET Technologies, Inc.
1221 1395 1540 Telstra Pty Ltd
3967 857 1039 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 657 1050 UUNET Technologies, Inc.
7018 558 1087 AT&T
7046 558 724 UUNET Technologies, Inc.
690 502 505 Merit Network
4323 495 584 Time Warner Communications, I
3908 472 694 Supernet, Inc.
209 425 596 Qwest
1239 406 727 Sprint
1 398 831 BBN Planet
2764 366 409 connect.com.au pty ltd
852 358 538 Telus Advanced Communications
2149 347 457 Performance Systems, Inc.
4151 322 367 USDA
705 304 397 UUNET Technologies, Inc.
11371 272 279 Rhythms NetConnections
3549 269 401 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:422 13:10 15:1 17:5
20:1 24:859 25:1 26:1 32:72 38:13
40:1 43:1 44:2 47:2 52:1 53:2
57:12 61:126 62:148 63:1901 64:1465 65:946
66:735 67:7 80:102 128:61 129:111 130:23
131:45 132:13 133:2 134:135 135:10 136:215
137:98 138:124 139:47 140:174 141:58 142:67
143:43 144:147 145:12 146:211 147:134 148:186
149:89 150:42 151:191 152:391 153:37 154:7
155:84 156:91 157:107 158:68 159:71 160:46
161:51 162:82 163:130 164:122 165:99 166:204
167:160 168:118 169:45 170:298 171:2 192:5385
193:2038 194:2079 195:849 196:439 198:3760 199:3390
200:2419 201:1 202:2795 203:4411 204:3326 205:2140
206:2627 207:2666 208:2750 209:2995 210:588 211:145
212:920 213:531 214:9 215:15 216:2953 217:413
218:7
End of report
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