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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 Sat 23 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108443
Prefixes after maximum aggregation: 71911
Unique aggregates announced to Internet: 51802
Total ASes present in the Internet Routing Table: 12590
Origin-only ASes present in the Internet Routing Table: 10896
Origin ASes announcing only one prefix: 4776
Transit ASes present in the Internet Routing Table: 1694
Transit-only ASes present in the Internet Routing Table: 59
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1174772296
Equivalent to 70 /8s, 5 /16s and 154 /24s
Percentage of available address space announced: 31.7
Percentage of allocated address space announced: 60.0
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72311
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17358
Total APNIC prefixes after maximum aggregation: 10547
Prefixes being announced from the APNIC address blocks: 15894
Unique aggregates announced from the APNIC address blocks: 9820
APNIC Region origin ASes present in the Internet Routing Table: 1442
APNIC Region origin ASes announcing only one prefix: 489
APNIC Region transit ASes present in the Internet Routing Table: 256
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79651392
Equivalent to 4 /8s, 191 /16s and 98 /24s
Percentage of available APNIC address space announced: 58.9
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: 72985
Total ARIN prefixes after maximum aggregation: 47331
Prefixes being announced from the ARIN address blocks: 51469
Unique aggregates announced from the ARIN address blocks: 16305
ARIN Region origin ASes present in the Internet Routing Table: 7450
ARIN Region origin ASes announcing only one prefix: 2320
ARIN Region transit ASes present in the Internet Routing Table: 767
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 194770564
Equivalent to 11 /8s, 155 /16s and 246 /24s
Percentage of available ARIN address space announced: 72.6
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: 18100
Total RIPE prefixes after maximum aggregation: 14033
Prefixes being announced from the RIPE address blocks: 14873
Unique aggregates announced from the RIPE address blocks: 10005
RIPE Region origin ASes present in the Internet Routing Table: 3638
RIPE Region origin ASes announcing only one prefix: 1967
RIPE Region transit ASes present in the Internet Routing Table: 658
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106847232
Equivalent to 6 /8s, 94 /16s and 92 /24s
Percentage of available RIPE address space announced: 70.8
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 1311 1246 963 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 402 359 311 UUNET Technologies, Inc.
2907 399 1942 365 SINET Japan
2764 387 361 362 connect.com.au pty ltd
7474 302 290 206 Optus Communications Pty Ltd
4755 291 111 88 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 253 112 3 CHINA RAILWAY Internet(CRNET)
17557 229 17 97 Pakistan Telecom
4766 213 1392 151 Korea Internet Exchange for "
7539 162 220 155 TANet2, sponsored by NSC, TAI
9443 162 44 60 Primus Telecommunications
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 140 32 5 Satyam Infoway Ltd.,
7657 122 22 85 The Internet Group Limited
4780 120 186 40 Digital United Inc.
4713 117 914 103 NTT Communications Corporatio
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1064 2633 855 UUNET Technologies, Inc.
3301 398 924 352 TeliaNet Sweden
1257 247 487 243 SWIPnet Swedish IP Network
3215 238 570 155 France Telecom / &Equant
680 232 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 197 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 167 305 121 LANLINK autonomous system
8708 158 22 146 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 116 40 65 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
5536 97 13 25 Internet Egypt Network
2874 95 100 35 Global One Services AB
2830 92 210 73 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2109 8444 1504 UUNET Technologies, Inc.
7018 1241 7511 936 AT&T
3908 834 1661 481 Supernet, Inc.
1 817 8102 596 BBN Planet
1239 803 3332 619 Sprint
4323 659 434 258 Time Warner Communications, I
7046 646 852 424 UUNET Technologies, Inc.
852 614 1127 410 Telus Advanced Communications
209 538 1974 309 Qwest
7132 455 510 164 Southwestern Bell Internet Se
2914 453 2193 421 Verio, Inc.
3549 451 823 234 Global Crossing
690 437 66 283 Merit Network
7843 377 298 47 Adelphia Corp.
705 375 114 265 UUNET Technologies, Inc.
2149 373 193 311 Performance Systems, Inc.
577 353 588 221 Bell Advanced Communications
3561 348 2204 309 Cable & Wireless USA
3741 343 730 234 The Internet Solution
2386 332 354 189 AT&T Data Communications Serv
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 659 401 Time Warner Communications, I
3908 834 353 Supernet, Inc.
1221 1311 348 Telstra Pty Ltd
7843 377 330 Adelphia Corp.
7018 1241 305 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 272 Rhythms NetConnections
9394 253 250 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 538 229 Qwest
7029 244 229 Alltel Information Services,
7046 646 222 UUNET Technologies, Inc.
1 817 221 BBN Planet
3549 451 217 Global Crossing
702 1064 209 UUNET Technologies, Inc.
852 614 204 Telus Advanced Communications
4355 240 204 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
172.16.0.0/12 9367 Tokyo Institute of Technology
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
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
189.186.184.0/24 4471 Michigan Internet Cooperative
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 /10:8 /11:12 /12:38
/13:91 /14:233 /15:396 /16:7148 /17:1434 /18:2537
/19:7365 /20:6766 /21:4806 /22:7297 /23:8891 /24:60449
/25:216 /26:260 /27:121 /28:87 /29:91 /30:130
/31:0 /32:42
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1352 2109 UUNET Technologies, Inc.
1221 1166 1311 Telstra Pty Ltd
702 687 1064 UUNET Technologies, Inc.
7018 656 1241 AT&T
3908 589 834 Supernet, Inc.
4323 537 659 Time Warner Communications, I
1239 471 803 Sprint
7046 462 646 UUNET Technologies, Inc.
690 433 437 Merit Network
1 420 817 BBN Planet
852 372 614 Telus Advanced Communications
209 356 538 Qwest
2764 343 387 connect.com.au pty ltd
703 324 402 UUNET Technologies, Inc.
705 322 375 UUNET Technologies, Inc.
3549 317 451 Global Crossing
2149 283 373 Performance Systems, Inc.
7066 276 305 Virginia Polytechnic Institut
6197 275 326 BellSouth Network Solutions,
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:481 13:10 15:1 17:5
20:2 24:781 25:1 32:68 38:9 40:6
44:1 57:14 61:229 62:171 63:1883 64:1120
65:1031 66:724 67:34 68:7 80:204 81:5
128:62 129:120 130:21 131:57 132:11 133:3
134:124 135:10 136:248 137:101 138:148 139:47
140:182 141:62 142:88 143:37 144:143 145:12
146:216 147:156 148:146 149:92 150:41 151:45
152:351 153:32 154:7 155:85 156:75 157:121
158:78 159:89 160:23 161:55 162:139 163:115
164:91 165:120 166:225 167:182 168:119 169:51
170:292 171:2 189:1 192:5436 193:2160 194:2036
195:795 196:443 198:3743 199:3241 200:2317 201:1
202:2894 203:4479 204:3341 205:2176 206:2527 207:2620
208:2570 209:2813 210:532 211:184 212:892 213:570
214:9 215:18 216:2972 217:454 218:12
End of report
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