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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 Fri 18 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107887
Prefixes after maximum aggregation: 72147
Unique aggregates announced to Internet: 52147
Total ASes present in the Internet Routing Table: 12383
Origin-only ASes present in the Internet Routing Table: 10742
Origin ASes announcing only one prefix: 4667
Transit ASes present in the Internet Routing Table: 1641
Transit-only ASes present in the Internet Routing Table: 56
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: 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: 1161684616
Equivalent to 69 /8s, 61 /16s and 230 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72310
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16822
Total APNIC prefixes after maximum aggregation: 10603
Prefixes being announced from the APNIC address blocks: 15301
Unique aggregates announced from the APNIC address blocks: 9760
APNIC Region origin ASes present in the Internet Routing Table: 1430
APNIC Region origin ASes announcing only one prefix: 470
APNIC Region transit ASes present in the Internet Routing Table: 246
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78635584
Equivalent to 4 /8s, 175 /16s and 226 /24s
Percentage of available APNIC address space announced: 58.1
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: 73215
Total ARIN prefixes after maximum aggregation: 47627
Prefixes being announced from the ARIN address blocks: 51910
Unique aggregates announced from the ARIN address blocks: 17065
ARIN Region origin ASes present in the Internet Routing Table: 7337
ARIN Region origin ASes announcing only one prefix: 2273
ARIN Region transit ASes present in the Internet Routing Table: 746
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183658948
Equivalent to 10 /8s, 242 /16s and 105 /24s
Percentage of available ARIN address space announced: 68.4
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: 17849
Total RIPE prefixes after maximum aggregation: 13917
Prefixes being announced from the RIPE address blocks: 14590
Unique aggregates announced from the RIPE address blocks: 9713
RIPE Region origin ASes present in the Internet Routing Table: 3560
RIPE Region origin ASes announcing only one prefix: 1924
RIPE Region transit ASes present in the Internet Routing Table: 641
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105951488
Equivalent to 6 /8s, 80 /16s and 177 /24s
Percentage of available RIPE address space announced: 70.2
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 1338 1242 981 Telstra Pty Ltd
703 403 345 306 UUNET Technologies, Inc.
2907 393 1893 363 SINET Japan
2764 391 377 368 connect.com.au pty ltd
7474 314 286 205 Optus Communications Pty Ltd
4755 306 114 91 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 199 1396 146 Korea Internet Exchange for "
17557 178 14 85 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 150 138 149 TANet2, sponsored by NSC, TAI
4740 146 34 120 OzEmail ISP
1659 144 924 34 Taiwan Academic Network (TANe
9583 144 32 5 Satyam Infoway Ltd.,
9768 143 381 87 Korea Telecom
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.
9800 113 193 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1093 2624 860 UUNET Technologies, Inc.
3301 397 924 351 TeliaNet Sweden
1257 255 489 249 SWIPnet Swedish IP Network
3215 235 562 153 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 219 705 176 Sonera Finland Autonomous Sys
3320 192 1961 170 Deutsche Telekom AG
786 179 1858 179 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 155 62 86 Concert European Core Network
8708 150 20 140 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 125 575 124 Swisscom Ltd
3269 114 661 69 TELECOM ITALIA
12302 114 7 35 MobiFon S.A.
8297 109 37 62 Teleglobe Autonomous System i
517 104 227 102 KPNQwest Germany GmbH
1290 96 412 71 PSINet UK Ltd.
5549 96 78 59 Nextra Deutschland GmbH + Co.
2874 93 101 38 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2135 8792 1530 UUNET Technologies, Inc.
7018 1713 7562 969 AT&T
1 840 8312 620 BBN Planet
3908 799 1656 462 Supernet, Inc.
1239 778 3156 604 Sprint
3967 717 365 285 Exodus Communication
7046 648 836 425 UUNET Technologies, Inc.
4323 612 412 216 Time Warner Communications, I
852 583 978 380 Telus Advanced Communications
690 541 77 318 Merit Network
209 514 1875 294 Qwest
705 490 449 306 UUNET Technologies, Inc.
2914 456 2194 425 Verio, Inc.
7132 447 500 158 Southwestern Bell Internet Se
3549 418 835 211 Global Crossing
4293 418 90 310 Cable & Wireless USA
2149 388 213 325 Performance Systems, Inc.
2386 385 354 243 AT&T Data Communications Serv
3561 373 2236 325 Cable & Wireless USA
577 354 604 222 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1713 744 AT&T
3967 717 432 Exodus Communication
4323 612 396 Time Warner Communications, I
1221 1338 357 Telstra Pty Ltd
3908 799 337 Supernet, Inc.
4151 340 324 USDA
7132 447 289 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
6347 323 241 SAVVIS Communications Corpora
702 1093 233 UUNET Technologies, Inc.
7046 648 223 UUNET Technologies, Inc.
690 541 223 Merit Network
1 840 220 BBN Planet
209 514 220 Qwest
4755 306 215 Videsh Sanchar Nigam Ltd. Aut
3549 418 207 Global Crossing
4355 236 205 EarthLink, Inc.
852 583 203 Telus Advanced Communications
6517 228 196 Yipes Communications, Inc.
7843 238 193 Adelphia Corp.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
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.
153.34.0.0/15 701 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
191.9.200.0/24 1290 PSINet UK Ltd.
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 /12:38
/13:93 /14:230 /15:392 /16:7095 /17:1400 /18:2464
/19:7253 /20:6471 /21:4775 /22:7284 /23:9070 /24:60406
/25:219 /26:214 /27:114 /28:88 /29:63 /30:127
/31:0 /32:48
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1364 2135 UUNET Technologies, Inc.
1221 1190 1338 Telstra Pty Ltd
7018 1140 1713 AT&T
702 711 1093 UUNET Technologies, Inc.
3908 556 799 Supernet, Inc.
690 537 541 Merit Network
3967 529 717 Exodus Communication
4323 506 612 Time Warner Communications, I
7046 480 648 UUNET Technologies, Inc.
1239 451 778 Sprint
1 427 840 BBN Planet
4293 406 418 Cable & Wireless USA
852 369 583 Telus Advanced Communications
705 359 490 UUNET Technologies, Inc.
2764 346 391 connect.com.au pty ltd
209 340 514 Qwest
703 327 403 UUNET Technologies, Inc.
2386 308 385 AT&T Data Communications Serv
4151 294 340 USDA
2149 292 388 Performance Systems, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:724 13:10 15:2 17:5
20:1 24:700 25:1 32:181 38:12 40:4
43:1 44:2 57:14 61:225 62:164 63:1905
64:1109 65:983 66:573 67:31 68:18 80:144
81:3 128:63 129:126 130:23 131:44 132:13
133:2 134:121 135:10 136:114 137:104 138:62
139:30 140:100 141:58 142:64 143:42 144:54
145:12 146:218 147:60 148:161 149:86 150:38
151:43 152:393 153:34 154:7 155:84 156:81
157:120 158:71 159:79 160:26 161:55 162:96
163:128 164:135 165:112 166:226 167:160 168:119
169:48 170:281 171:4 191:1 192:5395 193:2086
194:2048 195:806 196:436 198:3760 199:3260 200:2394
201:1 202:2880 203:4499 204:3314 205:2176 206:2752
207:2631 208:2802 209:2934 210:540 211:150 212:867
213:544 214:7 215:17 216:2958 217:414 218:12
End of report
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