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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 +10GMT Wed 23 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108348
Prefixes after maximum aggregation: 72166
Unique aggregates announced to Internet: 52371
Total ASes present in the Internet Routing Table: 12421
Origin-only ASes present in the Internet Routing Table: 10759
Origin ASes announcing only one prefix: 4678
Transit ASes present in the Internet Routing Table: 1662
Transit-only ASes present in the Internet Routing Table: 61
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: 3
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: 1179864200
Equivalent to 70 /8s, 83 /16s and 76 /24s
Percentage of available address space announced: 31.8
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72423
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17244
Total APNIC prefixes after maximum aggregation: 10621
Prefixes being announced from the APNIC address blocks: 15712
Unique aggregates announced from the APNIC address blocks: 9796
APNIC Region origin ASes present in the Internet Routing Table: 1434
APNIC Region origin ASes announcing only one prefix: 472
APNIC Region transit ASes present in the Internet Routing Table: 249
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78954304
Equivalent to 4 /8s, 180 /16s and 191 /24s
Percentage of available APNIC address space announced: 58.4
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: 73172
Total ARIN prefixes after maximum aggregation: 47620
Prefixes being announced from the ARIN address blocks: 51890
Unique aggregates announced from the ARIN address blocks: 17183
ARIN Region origin ASes present in the Internet Routing Table: 7352
ARIN Region origin ASes announcing only one prefix: 2276
ARIN Region transit ASes present in the Internet Routing Table: 751
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184530884
Equivalent to 10 /8s, 255 /16s and 183 /24s
Percentage of available ARIN address space announced: 68.7
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: 17930
Total RIPE prefixes after maximum aggregation: 13925
Prefixes being announced from the RIPE address blocks: 14667
Unique aggregates announced from the RIPE address blocks: 9769
RIPE Region origin ASes present in the Internet Routing Table: 3573
RIPE Region origin ASes announcing only one prefix: 1930
RIPE Region transit ASes present in the Internet Routing Table: 653
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106190592
Equivalent to 6 /8s, 84 /16s and 87 /24s
Percentage of available RIPE address space announced: 70.3
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, 24576 - 25599
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 1334 1258 976 Telstra Pty Ltd
4538 449 1162 16 China Education and Research
703 403 341 307 UUNET Technologies, Inc.
2764 395 377 371 connect.com.au pty ltd
2907 395 1909 365 SINET Japan
7474 314 286 205 Optus Communications Pty Ltd
4755 304 114 89 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 197 1392 148 Korea Internet Exchange for "
17557 187 14 83 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 151 138 150 TANet2, sponsored by NSC, TAI
4740 144 34 118 OzEmail ISP
9768 144 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
9583 138 32 5 Satyam Infoway Ltd.,
7657 125 22 85 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4713 114 893 101 NTT Communications Corporatio
4780 114 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1116 2622 862 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
680 235 2149 233 DFN-IP service G-WiN
3215 234 562 152 France Telecom / &Equant
5515 219 705 176 Sonera Finland Autonomous Sys
3320 192 1961 170 Deutsche Telekom AG
5400 185 77 92 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 151 20 140 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 118 695 72 TELECOM ITALIA
8297 117 40 65 Teleglobe Autonomous System i
12302 115 7 36 MobiFon S.A.
517 104 227 102 KPNQwest Germany GmbH
1290 95 412 70 PSINet UK Ltd.
5549 93 89 46 Nextra Deutschland GmbH + Co.
1267 92 1471 42 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2089 8341 1516 UUNET Technologies, Inc.
7018 1743 7596 971 AT&T
1 832 8264 611 BBN Planet
3908 783 1656 463 Supernet, Inc.
1239 776 3193 611 Sprint
3967 661 368 271 Exodus Communication
7046 652 837 428 UUNET Technologies, Inc.
4323 617 412 216 Time Warner Communications, I
852 565 976 364 Telus Advanced Communications
690 532 76 315 Merit Network
209 513 1875 292 Qwest
705 492 449 308 UUNET Technologies, Inc.
2914 454 2193 423 Verio, Inc.
7132 449 504 159 Southwestern Bell Internet Se
3549 423 836 218 Global Crossing
4293 415 90 308 Cable & Wireless USA
2149 389 214 326 Performance Systems, Inc.
2386 381 353 241 AT&T Data Communications Serv
3561 376 2236 327 Cable & Wireless USA
577 354 604 222 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1743 772 AT&T
4538 449 433 China Education and Research
4323 617 401 Time Warner Communications, I
3967 661 390 Exodus Communication
1221 1334 358 Telstra Pty Ltd
3908 783 320 Supernet, Inc.
4151 336 320 USDA
7132 449 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1116 254 UUNET Technologies, Inc.
6347 324 243 SAVVIS Communications Corpora
7046 652 224 UUNET Technologies, Inc.
1 832 221 BBN Planet
209 513 221 Qwest
690 532 217 Merit Network
4755 304 215 Videsh Sanchar Nigam Ltd. Aut
7843 249 209 Adelphia Corp.
4355 238 207 EarthLink, Inc.
3549 423 205 Global Crossing
852 565 201 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65505 PRIVATE 63.202.49.0/24 21694 Fresno County Office
65505 PRIVATE 63.207.252.0/22 21694 Fresno County Office
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
126.0.0.0/8 7336 Compass Communications
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.
153.36.0.0/14 701 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 /8:19 /9:6 /10:7 /11:12 /12:37
/13:91 /14:231 /15:390 /16:7150 /17:1418 /18:2494
/19:7297 /20:6677 /21:4853 /22:7336 /23:9053 /24:60423
/25:220 /26:208 /27:109 /28:88 /29:62 /30:128
/31:0 /32:39
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1329 2089 UUNET Technologies, Inc.
1221 1185 1334 Telstra Pty Ltd
7018 1153 1743 AT&T
702 739 1116 UUNET Technologies, Inc.
3908 536 783 Supernet, Inc.
690 528 532 Merit Network
4323 508 617 Time Warner Communications, I
7046 483 652 UUNET Technologies, Inc.
3967 470 661 Exodus Communication
1239 451 776 Sprint
1 424 832 BBN Planet
4293 403 415 Cable & Wireless USA
705 359 492 UUNET Technologies, Inc.
852 352 565 Telus Advanced Communications
2764 350 395 connect.com.au pty ltd
209 339 513 Qwest
703 328 403 UUNET Technologies, Inc.
2386 305 381 AT&T Data Communications Serv
2149 292 389 Performance Systems, Inc.
3549 291 423 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:730 13:10 15:2 17:5
20:1 24:713 25:1 32:181 38:12 40:4
43:1 44:2 57:14 61:226 62:166 63:1893
64:1119 65:979 66:577 67:32 68:19 80:147
81:3 128:63 129:133 130:23 131:44 132:13
133:2 134:122 135:10 136:124 137:104 138:62
139:29 140:100 141:58 142:65 143:41 144:54
145:12 146:216 147:62 148:162 149:86 150:39
151:44 152:390 153:34 154:7 155:83 156:81
157:124 158:72 159:80 160:26 161:55 162:96
163:127 164:90 165:115 166:225 167:160 168:121
169:48 170:282 171:4 192:5395 193:2108 194:2050
195:798 196:437 198:3771 199:3251 200:2328 201:1
202:2889 203:4504 204:3308 205:2170 206:2714 207:2681
208:2804 209:2921 210:535 211:150 212:874 213:557
214:7 215:17 216:2982 217:430 218:12
End of report
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