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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 Tue 22 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108180
Prefixes after maximum aggregation: 72170
Unique aggregates announced to Internet: 52252
Total ASes present in the Internet Routing Table: 12408
Origin-only ASes present in the Internet Routing Table: 10757
Origin ASes announcing only one prefix: 4681
Transit ASes present in the Internet Routing Table: 1651
Transit-only ASes present in the Internet Routing Table: 60
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: 4
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: 1179058056
Equivalent to 70 /8s, 70 /16s and 255 /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: 72278
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17225
Total APNIC prefixes after maximum aggregation: 10621
Prefixes being announced from the APNIC address blocks: 15701
Unique aggregates announced from the APNIC address blocks: 9764
APNIC Region origin ASes present in the Internet Routing Table: 1432
APNIC Region origin ASes announcing only one prefix: 470
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78951744
Equivalent to 4 /8s, 180 /16s and 181 /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: 73083
Total ARIN prefixes after maximum aggregation: 47620
Prefixes being announced from the ARIN address blocks: 51806
Unique aggregates announced from the ARIN address blocks: 17106
ARIN Region origin ASes present in the Internet Routing Table: 7345
ARIN Region origin ASes announcing only one prefix: 2278
ARIN Region transit ASes present in the Internet Routing Table: 752
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184297924
Equivalent to 10 /8s, 252 /16s and 41 /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: 17869
Total RIPE prefixes after maximum aggregation: 13929
Prefixes being announced from the RIPE address blocks: 14613
Unique aggregates announced from the RIPE address blocks: 9749
RIPE Region origin ASes present in the Internet Routing Table: 3571
RIPE Region origin ASes announcing only one prefix: 1933
RIPE Region transit ASes present in the Internet Routing Table: 644
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105904896
Equivalent to 6 /8s, 79 /16s and 251 /24s
Percentage of available RIPE address space announced: 70.1
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 1329 1242 977 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 305 114 89 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 197 1392 148 Korea Internet Exchange for "
17557 183 14 84 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 151 138 150 TANet2, sponsored by NSC, TAI
4740 145 34 119 OzEmail ISP
9768 144 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
9583 138 32 5 Satyam Infoway Ltd.,
7657 124 21 84 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4713 115 894 102 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 1092 2619 856 UUNET Technologies, Inc.
3301 399 924 350 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
680 235 2149 233 DFN-IP service G-WiN
3215 235 562 153 France Telecom / &Equant
5515 219 705 176 Sonera Finland Autonomous Sys
3320 192 1961 170 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 155 62 86 Concert European Core Network
8708 151 20 140 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
8297 118 40 69 Teleglobe Autonomous System i
3269 116 663 71 TELECOM ITALIA
12302 115 7 36 MobiFon S.A.
517 104 227 102 KPNQwest Germany GmbH
1290 95 412 70 PSINet UK Ltd.
5549 93 75 57 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 2111 8362 1526 UUNET Technologies, Inc.
7018 1726 7572 979 AT&T
1 834 8264 613 BBN Planet
3908 781 1656 462 Supernet, Inc.
1239 780 3193 611 Sprint
3967 660 368 271 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
209 514 1875 293 Qwest
705 493 449 309 UUNET Technologies, Inc.
2914 454 2193 423 Verio, Inc.
7132 449 504 159 Southwestern Bell Internet Se
3549 424 836 218 Global Crossing
4293 417 90 310 Cable & Wireless USA
2149 389 214 326 Performance Systems, Inc.
2386 385 354 244 AT&T Data Communications Serv
3561 379 2236 328 Cable & Wireless USA
577 354 604 222 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1726 747 AT&T
4538 449 433 China Education and Research
4323 617 401 Time Warner Communications, I
3967 660 389 Exodus Communication
1221 1329 352 Telstra Pty Ltd
4151 336 320 USDA
3908 781 319 Supernet, Inc.
7132 449 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
6347 324 243 SAVVIS Communications Corpora
702 1092 236 UUNET Technologies, Inc.
7046 652 224 UUNET Technologies, Inc.
1 834 221 BBN Planet
209 514 221 Qwest
690 532 217 Merit Network
4755 305 216 Videsh Sanchar Nigam Ltd. Aut
7843 248 208 Adelphia Corp.
3549 424 206 Global Crossing
4355 237 206 EarthLink, Inc.
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,
65001 PRIVATE 212.143.172.0/22 1680 NetVision Elronet As
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
/13:92 /14:231 /15:393 /16:7149 /17:1416 /18:2489
/19:7283 /20:6659 /21:4859 /22:7333 /23:9047 /24:60296
/25:221 /26:208 /27:110 /28:88 /29:61 /30:128
/31:0 /32:36
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1343 2111 UUNET Technologies, Inc.
1221 1181 1329 Telstra Pty Ltd
7018 1146 1726 AT&T
702 713 1092 UUNET Technologies, Inc.
3908 534 781 Supernet, Inc.
690 528 532 Merit Network
4323 508 617 Time Warner Communications, I
7046 483 652 UUNET Technologies, Inc.
3967 469 660 Exodus Communication
1239 450 780 Sprint
1 426 834 BBN Planet
4293 405 417 Cable & Wireless USA
705 360 493 UUNET Technologies, Inc.
852 352 565 Telus Advanced Communications
2764 350 395 connect.com.au pty ltd
209 340 514 Qwest
703 328 403 UUNET Technologies, Inc.
2386 309 385 AT&T Data Communications Serv
2149 292 389 Performance Systems, Inc.
3549 292 424 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:733 13:10 15:2 17:5
20:1 24:712 25:1 32:181 38:12 40:4
43:1 44:2 57:14 61:226 62:164 63:1894
64:1116 65:974 66:584 67:31 68:19 80:147
81:3 128:63 129:127 130:23 131:43 132:14
133:2 134:122 135:10 136:124 137:102 138:62
139:30 140:100 141:58 142:65 143:42 144:54
145:12 146:216 147:62 148:162 149:86 150:39
151:44 152:390 153:34 154:7 155:83 156:81
157:124 158:72 159:79 160:26 161:55 162:96
163:126 164:90 165:115 166:225 167:160 168:120
169:48 170:282 171:4 192:5402 193:2103 194:2053
195:800 196:436 198:3771 199:3250 200:2302 201:1
202:2890 203:4500 204:3313 205:2173 206:2713 207:2621
208:2804 209:2921 210:535 211:150 212:874 213:536
214:7 215:17 216:2981 217:413 218:12
End of report
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