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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 17 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107793
Prefixes after maximum aggregation: 72020
Unique aggregates announced to Internet: 52229
Total ASes present in the Internet Routing Table: 12373
Origin-only ASes present in the Internet Routing Table: 10733
Origin ASes announcing only one prefix: 4660
Transit ASes present in the Internet Routing Table: 1640
Transit-only ASes present in the Internet Routing Table: 55
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: 1161215180
Equivalent to 69 /8s, 54 /16s and 188 /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: 71983
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17212
Total APNIC prefixes after maximum aggregation: 10621
Prefixes being announced from the APNIC address blocks: 15690
Unique aggregates announced from the APNIC address blocks: 9783
APNIC Region origin ASes present in the Internet Routing Table: 1431
APNIC Region origin ASes announcing only one prefix: 468
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: 78607936
Equivalent to 4 /8s, 175 /16s and 118 /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: 72735
Total ARIN prefixes after maximum aggregation: 47482
Prefixes being announced from the ARIN address blocks: 51996
Unique aggregates announced from the ARIN address blocks: 17129
ARIN Region origin ASes present in the Internet Routing Table: 7328
ARIN Region origin ASes announcing only one prefix: 2269
ARIN Region transit ASes present in the Internet Routing Table: 749
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183573252
Equivalent to 10 /8s, 241 /16s and 27 /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: 17845
Total RIPE prefixes after maximum aggregation: 13917
Prefixes being announced from the RIPE address blocks: 14578
Unique aggregates announced from the RIPE address blocks: 9713
RIPE Region origin ASes present in the Internet Routing Table: 3559
RIPE Region origin ASes announcing only one prefix: 1923
RIPE Region transit ASes present in the Internet Routing Table: 636
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105936384
Equivalent to 6 /8s, 80 /16s and 118 /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 1333 1241 984 Telstra Pty Ltd
4538 450 1098 14 China Education and Research
703 400 339 305 UUNET Technologies, Inc.
2907 394 1909 364 SINET Japan
2764 393 377 369 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 181 14 85 Pakistan Telecom
9443 172 45 68 Primus Telecommunications
7539 148 137 147 TANet2, sponsored by NSC, TAI
4740 146 18 120 OzEmail ISP
1659 144 924 34 Taiwan Academic Network (TANe
9583 144 32 5 Satyam Infoway Ltd.,
9768 143 381 87 Korea Telecom
7657 123 21 83 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4713 115 894 102 NTT Communications Corporatio
4780 115 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1092 2618 863 UUNET Technologies, Inc.
3301 397 924 350 TeliaNet Sweden
1257 254 489 248 SWIPnet Swedish IP Network
680 233 2149 231 DFN-IP service G-WiN
3215 233 562 152 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 150 20 140 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 126 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 114 7 35 MobiFon S.A.
8297 110 37 62 Teleglobe Autonomous System i
517 106 229 104 KPNQwest Germany GmbH
5549 97 78 60 Nextra Deutschland GmbH + Co.
1290 96 412 71 PSINet UK Ltd.
2874 93 101 38 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2142 8810 1536 UUNET Technologies, Inc.
7018 1179 7528 912 AT&T
1 843 8329 622 BBN Planet
3908 799 1640 462 Supernet, Inc.
1239 775 3156 603 Sprint
3967 732 364 289 Exodus Communication
7046 654 836 429 UUNET Technologies, Inc.
4323 611 412 215 Time Warner Communications, I
852 581 977 382 Telus Advanced Communications
690 542 77 319 Merit Network
209 516 1875 295 Qwest
705 492 449 307 UUNET Technologies, Inc.
2914 455 2194 424 Verio, Inc.
7132 422 487 159 Southwestern Bell Internet Se
4293 418 90 310 Cable & Wireless USA
3549 415 831 210 Global Crossing
2149 388 213 325 Performance Systems, Inc.
3561 370 2189 323 Cable & Wireless USA
577 350 604 220 Bell Advanced Communications
3741 350 730 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3967 732 443 Exodus Communication
4538 450 436 China Education and Research
4323 611 396 Time Warner Communications, I
1221 1333 349 Telstra Pty Ltd
3908 799 337 Supernet, Inc.
4151 339 323 USDA
11371 278 271 Rhythms NetConnections
7018 1179 267 AT&T
7132 422 263 Southwestern Bell Internet Se
6347 324 241 SAVVIS Communications Corpora
702 1092 229 UUNET Technologies, Inc.
7046 654 225 UUNET Technologies, Inc.
690 542 223 Merit Network
1 843 221 BBN Planet
209 516 221 Qwest
4755 306 215 Videsh Sanchar Nigam Ltd. Aut
3549 415 205 Global Crossing
4355 232 201 EarthLink, Inc.
852 581 199 Telus Advanced Communications
6517 223 194 Yipes Communications, Inc.
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 /16:7144 /17:1410 /18:2477
/19:7266 /20:6618 /21:4841 /22:7270 /23:9018 /24:60070
/25:213 /26:217 /27:116 /28:89 /29:70 /30:129
/31:0 /32:49
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1368 2142 UUNET Technologies, Inc.
1221 1186 1333 Telstra Pty Ltd
702 713 1092 UUNET Technologies, Inc.
7018 622 1179 AT&T
3908 557 799 Supernet, Inc.
3967 546 732 Exodus Communication
690 538 542 Merit Network
4323 505 611 Time Warner Communications, I
7046 486 654 UUNET Technologies, Inc.
1239 448 775 Sprint
1 429 843 BBN Planet
4293 406 418 Cable & Wireless USA
852 368 581 Telus Advanced Communications
705 359 492 UUNET Technologies, Inc.
2764 348 393 connect.com.au pty ltd
209 342 516 Qwest
703 327 400 UUNET Technologies, Inc.
4151 293 339 USDA
2149 292 388 Performance Systems, Inc.
3549 285 415 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:455 13:10 15:2 17:5
20:1 24:843 25:1 32:74 38:13 40:4
43:1 44:2 57:14 61:225 62:157 63:1894
64:1103 65:998 66:569 67:31 68:15 80:142
128:63 129:121 130:23 131:44 132:13 133:2
134:121 135:10 136:118 137:105 138:62 139:30
140:99 141:57 142:64 143:42 144:53 145:12
146:215 147:60 148:159 149:86 150:39 151:43
152:394 153:34 154:7 155:85 156:81 157:122
158:72 159:79 160:26 161:55 162:96 163:128
164:131 165:112 166:220 167:160 168:112 169:48
170:279 171:2 191:1 192:5400 193:2090 194:2051
195:807 196:435 198:3740 199:3239 200:2395 201:1
202:2885 203:4506 204:3313 205:2191 206:2762 207:2588
208:2814 209:2918 210:530 211:150 212:875 213:530
214:7 215:17 216:2955 217:412 218:12
End of report
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