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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 Fri 21 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108167
Prefixes after maximum aggregation: 71940
Unique aggregates announced to Internet: 52053
Total ASes present in the Internet Routing Table: 12306
Origin-only ASes present in the Internet Routing Table: 10687
Origin ASes announcing only one prefix: 4613
Transit ASes present in the Internet Routing Table: 1619
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: 15
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1161095744
Equivalent to 69 /8s, 52 /16s and 234 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72898
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17055
Total APNIC prefixes after maximum aggregation: 10569
Prefixes being announced from the APNIC address blocks: 15476
Unique aggregates announced from the APNIC address blocks: 9807
APNIC Region origin ASes present in the Internet Routing Table: 1426
APNIC Region origin ASes announcing only one prefix: 465
APNIC Region transit ASes present in the Internet Routing Table: 240
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 77762800
Equivalent to 4 /8s, 162 /16s and 144 /24s
Percentage of available APNIC address space announced: 57.5
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 73295
Total ARIN prefixes after maximum aggregation: 47494
Prefixes being announced from the ARIN address blocks: 52673
Unique aggregates announced from the ARIN address blocks: 16969
ARIN Region origin ASes present in the Internet Routing Table: 7291
ARIN Region origin ASes announcing only one prefix: 2245
ARIN Region transit ASes present in the Internet Routing Table: 744
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 180008396
Equivalent to 10 /8s, 186 /16s and 181 /24s
Percentage of available ARIN address space announced: 67.1
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: 17817
Total RIPE prefixes after maximum aggregation: 13877
Prefixes being announced from the RIPE address blocks: 14510
Unique aggregates announced from the RIPE address blocks: 9674
RIPE Region origin ASes present in the Internet Routing Table: 3531
RIPE Region origin ASes announcing only one prefix: 1903
RIPE Region transit ASes present in the Internet Routing Table: 622
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 104496128
Equivalent to 6 /8s, 58 /16s and 124 /24s
Percentage of available RIPE address space announced: 69.2
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 MaxAgg Description
1221 1507 1261 1043 Telstra Pty Ltd
2764 400 376 374 connect.com.au pty ltd
703 398 346 305 UUNET Technologies, Inc.
2907 371 1832 341 SINET Japan
7474 310 285 201 Optus Communications Pty Ltd
4755 299 117 81 Videsh Sanchar Nigam Ltd. Aut
4134 264 1874 96 Data Communications Bureau
4766 185 1395 135 Korea Internet Exchange for "
2521 181 165 28 PSINet Japan
1659 175 924 34 Taiwan Academic Network (TANe
17557 174 13 83 Pakistan Telecom
9443 171 45 67 Primus Telecommunications
4740 154 34 127 OzEmail ISP
9583 150 32 3 Satyam Infoway Ltd.,
9768 141 381 87 Korea Telecom
7539 140 135 139 TANet2, sponsored by NSC, TAI
4812 137 192 34 China Telecom (Group) - Shang
17676 125 1920 7 XTAGE CORPORATION
4713 120 942 107 NTT Communications Corporatio
7657 118 21 77 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1093 2687 860 UUNET Technologies, Inc.
3301 425 925 354 TeliaNet Sweden
1257 253 473 250 SWIPnet Swedish IP Network
3215 235 555 151 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 196 1960 165 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 149 20 140 Romania Data Systems S.A.
5400 147 59 84 Concert European Core Network
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
8895 116 89 40 Saudi Arabia AS
3269 114 662 70 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
517 110 232 108 KPNQwest Germany GmbH
8297 107 31 64 Teleglobe Autonomous System i
5511 99 192 79 France Telecom
1290 96 396 71 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2164 8841 1531 UUNET Technologies, Inc.
7018 1102 7353 863 AT&T
3967 957 363 476 Exodus Communication
705 926 377 405 UUNET Technologies, Inc.
1 857 8404 654 BBN Planet
1239 782 3169 604 Sprint
3908 757 1622 474 Supernet, Inc.
8010 719 62 12 PublicNet Communications, Inc
7046 700 823 452 UUNET Technologies, Inc.
209 613 1861 296 Qwest
4323 585 364 201 Time Warner Communications, I
852 578 977 381 Telus Advanced Communications
690 527 76 314 Merit Network
2914 461 2211 432 Verio, Inc.
3549 404 837 201 Global Crossing
2149 403 214 337 Performance Systems, Inc.
7132 399 466 165 Southwestern Bell Internet Se
3561 385 2269 332 Cable & Wireless USA
577 350 587 218 Bell Advanced Communications
3741 350 730 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 707 PublicNet Communications, Inc
705 521 UUNET Technologies, Inc.
3967 481 Exodus Communication
1221 464 Telstra Pty Ltd
4323 384 Time Warner Communications, I
4151 325 USDA
209 317 Qwest
3908 283 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 248 UUNET Technologies, Inc.
7018 239 AT&T
6347 238 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 233 UUNET Technologies, Inc.
4755 218 Videsh Sanchar Nigam Ltd. Aut
690 213 Merit Network
1 203 BBN Planet
3549 203 Global Crossing
4355 198 EarthLink, Inc.
852 197 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
2.0.0.0/8 4702 KDD communications Inc.
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 /8:19 /9:5 /10:7 /11:11 /12:37
/13:89 /14:227 /15:391 /16:7086 /17:1372 /18:2466
/19:7183 /20:6253 /21:4718 /22:7165 /23:8892 /24:60942
/25:318 /26:302 /27:208 /28:174 /29:113 /30:146
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1384 2164 UUNET Technologies, Inc.
1221 1361 1507 Telstra Pty Ltd
705 809 926 UUNET Technologies, Inc.
3967 776 957 Exodus Communication
702 710 1093 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 568 1102 AT&T
7046 535 700 UUNET Technologies, Inc.
690 524 527 Merit Network
3908 520 757 Supernet, Inc.
4323 496 585 Time Warner Communications, I
1239 449 782 Sprint
209 443 613 Qwest
1 424 857 BBN Planet
852 368 578 Telus Advanced Communications
2764 355 400 connect.com.au pty ltd
703 323 398 UUNET Technologies, Inc.
2149 307 403 Performance Systems, Inc.
4151 295 341 USDA
7474 275 310 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:443 13:10 15:2 17:5
20:1 24:805 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:12 61:168
62:153 63:2365 64:1500 65:1023 66:744 67:16
68:2 80:131 128:61 129:112 130:24 131:43
132:14 133:2 134:128 135:10 136:117 137:105
138:63 139:29 140:102 141:57 142:65 143:43
144:54 145:12 146:217 147:95 148:153 149:88
150:41 151:38 152:392 153:34 154:6 155:83
156:85 157:121 158:69 159:77 160:45 161:54
162:86 163:130 164:125 165:100 166:206 167:162
168:115 169:48 170:299 171:2 191:1 192:5367
193:2074 194:2055 195:773 196:430 198:3760 199:3309
200:2400 201:1 202:2872 203:4535 204:3329 205:2177
206:2603 207:2705 208:2607 209:2941 210:567 211:151
212:948 213:554 214:9 215:15 216:2958 217:396
218:11
End of report
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