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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 27 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108877
Prefixes after maximum aggregation: 72043
Unique aggregates announced to Internet: 51935
Total ASes present in the Internet Routing Table: 12621
Origin-only ASes present in the Internet Routing Table: 10923
Origin ASes announcing only one prefix: 4786
Transit ASes present in the Internet Routing Table: 1698
Transit-only ASes present in the Internet Routing Table: 56
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: 1
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: 1174513544
Equivalent to 70 /8s, 1 /16s and 167 /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: 72654
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17569
Total APNIC prefixes after maximum aggregation: 10633
Prefixes being announced from the APNIC address blocks: 16118
Unique aggregates announced from the APNIC address blocks: 9916
APNIC Region origin ASes present in the Internet Routing Table: 1451
APNIC Region origin ASes announcing only one prefix: 485
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 80033344
Equivalent to 4 /8s, 197 /16s and 54 /24s
Percentage of available APNIC address space announced: 59.2
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: 73144
Total ARIN prefixes after maximum aggregation: 47353
Prefixes being announced from the ARIN address blocks: 51579
Unique aggregates announced from the ARIN address blocks: 16312
ARIN Region origin ASes present in the Internet Routing Table: 7470
ARIN Region origin ASes announcing only one prefix: 2331
ARIN Region transit ASes present in the Internet Routing Table: 768
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 194769732
Equivalent to 11 /8s, 155 /16s and 243 /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: 18164
Total RIPE prefixes after maximum aggregation: 14057
Prefixes being announced from the RIPE address blocks: 14942
Unique aggregates announced from the RIPE address blocks: 10018
RIPE Region origin ASes present in the Internet Routing Table: 3643
RIPE Region origin ASes announcing only one prefix: 1970
RIPE Region transit ASes present in the Internet Routing Table: 662
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 107039104
Equivalent to 6 /8s, 97 /16s and 73 /24s
Percentage of available RIPE address space announced: 70.9
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 1304 1245 960 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
2907 399 1942 365 SINET Japan
703 398 337 308 UUNET Technologies, Inc.
2764 387 361 362 connect.com.au pty ltd
7474 299 289 203 Optus Communications Pty Ltd
4755 295 111 85 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 254 112 3 CHINA RAILWAY Internet(CRNET)
17557 227 15 100 Pakistan Telecom
4766 209 1392 151 Korea Internet Exchange for "
9443 164 44 62 Primus Telecommunications
7539 162 220 155 TANet2, sponsored by NSC, TAI
9768 147 385 89 Korea Telecom
9583 141 32 5 Satyam Infoway Ltd.,
4713 126 914 104 NTT Communications Corporatio
7657 122 22 85 The Internet Group Limited
4780 120 186 40 Digital United Inc.
17676 115 1840 17 XTAGE CORPORATION
9800 114 194 23 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1058 2632 851 UUNET Technologies, Inc.
3301 397 924 351 TeliaNet Sweden
3215 260 570 157 France Telecom / &Equant
1257 245 487 241 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 199 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 181 1858 181 The JANET IP Service
719 165 305 120 LANLINK autonomous system
8708 162 22 147 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
12302 116 7 36 MobiFon S.A.
8297 115 40 64 Teleglobe Autonomous System i
517 101 227 99 KPNQwest Germany GmbH
5511 98 192 86 France Telecom
2874 95 100 35 Global One Services AB
2830 89 210 70 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2169 8481 1515 UUNET Technologies, Inc.
7018 1219 7494 918 AT&T
3908 830 1661 478 Supernet, Inc.
1 829 8119 603 BBN Planet
1239 809 3348 622 Sprint
4323 642 435 256 Time Warner Communications, I
7046 638 853 424 UUNET Technologies, Inc.
852 618 1119 409 Telus Advanced Communications
209 543 1974 311 Qwest
3549 465 839 237 Global Crossing
7132 455 510 164 Southwestern Bell Internet Se
2914 447 2176 415 Verio, Inc.
690 438 67 284 Merit Network
705 380 126 270 UUNET Technologies, Inc.
7843 378 299 47 Adelphia Corp.
2149 374 193 312 Performance Systems, Inc.
3741 343 730 234 The Internet Solution
577 337 587 220 Bell Advanced Communications
3561 336 2172 301 Cable & Wireless USA
2386 333 355 190 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 642 386 Time Warner Communications, I
3908 830 352 Supernet, Inc.
1221 1304 344 Telstra Pty Ltd
7843 378 331 Adelphia Corp.
7018 1219 301 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 306 290 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 272 Rhythms NetConnections
9394 254 251 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 543 232 Qwest
7029 244 229 Alltel Information Services,
3549 465 228 Global Crossing
1 829 226 BBN Planet
7046 638 214 UUNET Technologies, Inc.
4755 295 210 Videsh Sanchar Nigam Ltd. Aut
852 618 209 Telus Advanced Communications
702 1058 207 UUNET Technologies, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
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 /12:37
/13:91 /14:234 /15:400 /16:7155 /17:1440 /18:2562
/19:7406 /20:6796 /21:4806 /22:7313 /23:8932 /24:60698
/25:223 /26:262 /27:121 /28:89 /29:92 /30:127
/31:0 /32:48
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1408 2169 UUNET Technologies, Inc.
1221 1159 1304 Telstra Pty Ltd
702 683 1058 UUNET Technologies, Inc.
7018 636 1219 AT&T
3908 586 830 Supernet, Inc.
4323 513 642 Time Warner Communications, I
1239 475 809 Sprint
7046 452 638 UUNET Technologies, Inc.
690 434 438 Merit Network
1 432 829 BBN Planet
852 374 618 Telus Advanced Communications
209 361 543 Qwest
2764 343 387 connect.com.au pty ltd
3549 330 465 Global Crossing
703 323 398 UUNET Technologies, Inc.
705 322 380 UUNET Technologies, Inc.
2149 284 374 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 273 302 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:490 13:10 15:1 17:5
20:2 24:781 25:1 32:68 38:9 40:6
44:1 57:14 61:232 62:177 63:1885 64:1126
65:1039 66:722 67:35 68:7 80:207 81:5
128:62 129:123 130:21 131:57 132:11 133:3
134:124 135:10 136:248 137:101 138:149 139:47
140:184 141:63 142:82 143:37 144:143 145:13
146:217 147:157 148:147 149:94 150:41 151:45
152:350 153:31 154:8 155:86 156:75 157:121
158:79 159:116 160:23 161:56 162:139 163:115
164:80 165:121 166:224 167:184 168:118 169:48
170:294 171:2 189:1 192:5430 193:2192 194:2062
195:786 196:441 198:3732 199:3240 200:2351 201:1
202:3017 203:4487 204:3326 205:2170 206:2529 207:2630
208:2566 209:2816 210:536 211:183 212:894 213:572
214:9 215:18 216:2960 217:454 218:21
End of report
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