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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 Thu 07 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107805
Prefixes after maximum aggregation: 71900
Unique aggregates announced to Internet: 52549
Total ASes present in the Internet Routing Table: 12498
Origin-only ASes present in the Internet Routing Table: 10807
Origin ASes announcing only one prefix: 4727
Transit ASes present in the Internet Routing Table: 1691
Transit-only ASes present in the Internet Routing Table: 64
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: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1164375048
Equivalent to 69 /8s, 102 /16s and 244 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.5
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71793
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17514
Total APNIC prefixes after maximum aggregation: 10646
Prefixes being announced from the APNIC address blocks: 15962
Unique aggregates announced from the APNIC address blocks: 9851
APNIC Region origin ASes present in the Internet Routing Table: 1445
APNIC Region origin ASes announcing only one prefix: 478
APNIC Region transit ASes present in the Internet Routing Table: 252
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79270464
Equivalent to 4 /8s, 185 /16s and 146 /24s
Percentage of available APNIC address space announced: 58.6
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: 72284
Total ARIN prefixes after maximum aggregation: 47209
Prefixes being announced from the ARIN address blocks: 50990
Unique aggregates announced from the ARIN address blocks: 17142
ARIN Region origin ASes present in the Internet Routing Table: 7385
ARIN Region origin ASes announcing only one prefix: 2289
ARIN Region transit ASes present in the Internet Routing Table: 763
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 185621316
Equivalent to 11 /8s, 16 /16s and 91 /24s
Percentage of available ARIN address space announced: 69.1
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: 18007
Total RIPE prefixes after maximum aggregation: 14045
Prefixes being announced from the RIPE address blocks: 14772
Unique aggregates announced from the RIPE address blocks: 9891
RIPE Region origin ASes present in the Internet Routing Table: 3603
RIPE Region origin ASes announcing only one prefix: 1960
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: 106576640
Equivalent to 6 /8s, 90 /16s and 59 /24s
Percentage of available RIPE address space announced: 70.6
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 1320 1259 969 Telstra Pty Ltd
4538 450 1162 16 China Education and Research
703 401 362 304 UUNET Technologies, Inc.
2907 395 1893 364 SINET Japan
2764 393 362 370 connect.com.au pty ltd
7474 303 290 206 Optus Communications Pty Ltd
4755 299 113 86 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
9394 226 112 3 CHINA RAILWAY Internet(CRNET)
4766 206 1393 145 Korea Internet Exchange for "
17557 205 15 90 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
1659 152 924 34 Taiwan Academic Network (TANe
7539 152 121 147 TANet2, sponsored by NSC, TAI
9768 143 377 85 Korea Telecom
9583 138 32 5 Satyam Infoway Ltd.,
4740 130 17 110 OzEmail ISP
7657 120 21 83 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
4780 116 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1112 2620 863 UUNET Technologies, Inc.
3301 399 924 352 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 238 562 153 France Telecom / &Equant
680 233 2148 231 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 166 289 120 LANLINK autonomous system
8708 155 21 142 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 103 227 101 KPNQwest Germany GmbH
5603 94 13 59 SiOL Internet d.o.o.
5511 93 192 82 France Telecom
1267 91 1471 41 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2081 8302 1504 UUNET Technologies, Inc.
7018 1231 7508 927 AT&T
1 842 8153 612 BBN Planet
3908 811 1662 471 Supernet, Inc.
1239 782 3214 610 Sprint
4323 634 431 238 Time Warner Communications, I
7046 626 849 414 UUNET Technologies, Inc.
852 564 1026 365 Telus Advanced Communications
209 525 1908 302 Qwest
690 492 72 307 Merit Network
7132 455 508 163 Southwestern Bell Internet Se
2914 454 2195 423 Verio, Inc.
3549 426 816 215 Global Crossing
705 395 120 276 UUNET Technologies, Inc.
2149 390 210 326 Performance Systems, Inc.
3561 364 2221 321 Cable & Wireless USA
577 352 604 219 Bell Advanced Communications
3741 348 731 239 The Internet Solution
2386 330 356 191 AT&T Data Communications Serv
6197 323 226 169 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 450 434 China Education and Research
4323 634 396 Time Warner Communications, I
1221 1320 351 Telstra Pty Ltd
3908 811 340 Supernet, Inc.
7018 1231 304 AT&T
4151 311 295 USDA
7132 455 292 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1112 249 UUNET Technologies, Inc.
6347 311 232 SAVVIS Communications Corpora
1 842 230 BBN Planet
7843 265 227 Adelphia Corp.
209 525 223 Qwest
9394 226 223 CHINA RAILWAY Internet(CRNET)
4755 299 213 Videsh Sanchar Nigam Ltd. Aut
7046 626 212 UUNET Technologies, Inc.
3549 426 211 Global Crossing
4355 235 204 EarthLink, Inc.
852 564 199 Telus Advanced Communications
6517 229 197 Yipes Communications, 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,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
126.0.0.0/8 7336 Compass Communications
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
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 /9:6 /10:7 /11:12 /12:37
/13:91 /14:232 /15:393 /16:7150 /17:1415 /18:2496
/19:7338 /20:6707 /21:4800 /22:7257 /23:8930 /24:59985
/25:216 /26:255 /27:116 /28:87 /29:84 /30:132
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1331 2081 UUNET Technologies, Inc.
1221 1173 1320 Telstra Pty Ltd
702 733 1112 UUNET Technologies, Inc.
7018 645 1231 AT&T
3908 566 811 Supernet, Inc.
4323 517 634 Time Warner Communications, I
690 488 492 Merit Network
1239 458 782 Sprint
7046 454 626 UUNET Technologies, Inc.
1 435 842 BBN Planet
2764 349 393 connect.com.au pty ltd
209 346 525 Qwest
852 345 564 Telus Advanced Communications
705 340 395 UUNET Technologies, Inc.
703 324 401 UUNET Technologies, Inc.
2149 297 390 Performance Systems, Inc.
3549 296 426 Global Crossing
7066 275 304 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
6197 271 323 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:466 13:10 15:1 17:5
20:5 24:657 25:1 32:68 38:9 40:6
44:1 57:14 61:217 62:161 63:1882 64:1099
65:1018 66:621 67:33 68:5 80:174 81:4
128:65 129:119 130:22 131:52 132:11 133:3
134:128 135:10 136:244 137:104 138:149 139:46
140:163 141:61 142:67 143:39 144:151 145:12
146:214 147:135 148:144 149:86 150:40 151:43
152:370 153:32 154:8 155:81 156:77 157:119
158:80 159:88 160:24 161:55 162:96 163:127
164:95 165:126 166:222 167:167 168:113 169:47
170:290 171:2 192:5441 193:2228 194:2037 195:790
196:447 198:3715 199:3248 200:2250 201:1 202:2945
203:4499 204:3299 205:2145 206:2583 207:2587 208:2591
209:2872 210:538 211:149 212:877 213:546 214:9
215:19 216:2930 217:443 218:10
End of report
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