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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 Sat 19 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108245
Prefixes after maximum aggregation: 72134
Unique aggregates announced to Internet: 52247
Total ASes present in the Internet Routing Table: 12391
Origin-only ASes present in the Internet Routing Table: 10744
Origin ASes announcing only one prefix: 4669
Transit ASes present in the Internet Routing Table: 1647
Transit-only ASes present in the Internet Routing Table: 61
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: 3
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: 1178693896
Equivalent to 70 /8s, 65 /16s and 113 /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: 72367
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17243
Total APNIC prefixes after maximum aggregation: 10629
Prefixes being announced from the APNIC address blocks: 15718
Unique aggregates announced from the APNIC address blocks: 9767
APNIC Region origin ASes present in the Internet Routing Table: 1432
APNIC Region origin ASes announcing only one prefix: 469
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: 78638912
Equivalent to 4 /8s, 175 /16s and 239 /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: 73146
Total ARIN prefixes after maximum aggregation: 47577
Prefixes being announced from the ARIN address blocks: 51861
Unique aggregates announced from the ARIN address blocks: 17119
ARIN Region origin ASes present in the Internet Routing Table: 7335
ARIN Region origin ASes announcing only one prefix: 2275
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: 184007620
Equivalent to 10 /8s, 247 /16s and 187 /24s
Percentage of available ARIN address space announced: 68.5
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: 17855
Total RIPE prefixes after maximum aggregation: 13928
Prefixes being announced from the RIPE address blocks: 14584
Unique aggregates announced from the RIPE address blocks: 9739
RIPE Region origin ASes present in the Internet Routing Table: 3563
RIPE Region origin ASes announcing only one prefix: 1925
RIPE Region transit ASes present in the Internet Routing Table: 642
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106022912
Equivalent to 6 /8s, 81 /16s and 200 /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 1335 1243 979 Telstra Pty Ltd
4538 448 1098 14 China Education and Research
703 402 341 306 UUNET Technologies, Inc.
2907 395 1909 365 SINET Japan
2764 393 377 369 connect.com.au pty ltd
7474 315 286 206 Optus Communications Pty Ltd
4755 304 114 96 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 190 1391 152 Korea Internet Exchange for "
17557 181 14 85 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 151 138 150 TANet2, sponsored by NSC, TAI
4740 147 34 121 OzEmail ISP
9768 144 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
9583 143 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 1093 2620 859 UUNET Technologies, Inc.
3301 400 924 351 TeliaNet Sweden
1257 255 489 249 SWIPnet Swedish IP Network
680 234 2149 232 DFN-IP service G-WiN
3215 234 562 152 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 153 20 141 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 114 7 35 MobiFon S.A.
8297 112 37 62 Teleglobe Autonomous System i
517 104 227 102 KPNQwest Germany GmbH
1290 96 412 71 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 2102 8374 1523 UUNET Technologies, Inc.
7018 1715 7563 971 AT&T
1 840 8312 619 BBN Planet
3908 781 1656 462 Supernet, Inc.
1239 771 3155 601 Sprint
3967 680 369 271 Exodus Communication
7046 651 837 427 UUNET Technologies, Inc.
4323 617 412 216 Time Warner Communications, I
852 583 978 380 Telus Advanced Communications
690 523 75 318 Merit Network
209 511 1875 294 Qwest
705 492 449 308 UUNET Technologies, Inc.
2914 454 2192 423 Verio, Inc.
7132 448 502 159 Southwestern Bell Internet Se
3549 418 835 212 Global Crossing
4293 418 90 310 Cable & Wireless USA
2149 389 214 326 Performance Systems, Inc.
2386 384 354 243 AT&T Data Communications Serv
3561 373 2236 327 Cable & Wireless USA
577 354 604 222 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1715 744 AT&T
4538 448 434 China Education and Research
3967 680 409 Exodus Communication
4323 617 401 Time Warner Communications, I
1221 1335 356 Telstra Pty Ltd
4151 336 320 USDA
3908 781 319 Supernet, Inc.
7132 448 289 Southwestern Bell Internet Se
11371 271 265 Rhythms NetConnections
6347 323 242 SAVVIS Communications Corpora
702 1093 234 UUNET Technologies, Inc.
7046 651 224 UUNET Technologies, Inc.
1 840 221 BBN Planet
209 511 217 Qwest
4755 304 208 Videsh Sanchar Nigam Ltd. Aut
3549 418 206 Global Crossing
4355 237 206 EarthLink, Inc.
690 523 205 Merit Network
852 583 203 Telus Advanced Communications
7843 242 202 Adelphia Corp.
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,
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
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 /8:19 /9:6 /10:7 /11:12 /12:37
/13:92 /14:230 /15:392 /16:7153 /17:1417 /18:2482
/19:7271 /20:6653 /21:4865 /22:7332 /23:9017 /24:60394
/25:219 /26:214 /27:116 /28:92 /29:65 /30:121
/31:0 /32:39
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1343 2102 UUNET Technologies, Inc.
1221 1187 1335 Telstra Pty Ltd
7018 1142 1715 AT&T
702 713 1093 UUNET Technologies, Inc.
3908 534 781 Supernet, Inc.
690 519 523 Merit Network
4323 508 617 Time Warner Communications, I
3967 488 680 Exodus Communication
7046 482 651 UUNET Technologies, Inc.
1239 448 771 Sprint
1 427 840 BBN Planet
4293 406 418 Cable & Wireless USA
852 369 583 Telus Advanced Communications
705 358 492 UUNET Technologies, Inc.
2764 348 393 connect.com.au pty ltd
209 337 511 Qwest
703 327 402 UUNET Technologies, Inc.
2386 307 384 AT&T Data Communications Serv
2149 292 389 Performance Systems, Inc.
4151 290 336 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:726 13:10 15:2 17:5
20:1 24:712 25:1 32:181 38:12 40:4
43:1 44:2 57:14 61:224 62:161 63:1905
64:1117 65:986 66:580 67:31 68:20 80:143
81:3 128:63 129:127 130:23 131:44 132:13
133:2 134:122 135:10 136:121 137:104 138:62
139:30 140:100 141:58 142:64 143:42 144:54
145:12 146:216 147:62 148:162 149:85 150:38
151:43 152:387 153:34 154:7 155:83 156:81
157:122 158:72 159:79 160:26 161:53 162:96
163:128 164:133 165:114 166:225 167:160 168:120
169:48 170:281 171:4 191:1 192:5396 193:2096
194:2048 195:799 196:436 198:3773 199:3257 200:2396
201:1 202:2902 203:4504 204:3306 205:2168 206:2740
207:2627 208:2791 209:2916 210:531 211:149 212:863
213:541 214:7 215:17 216:2949 217:414 218:12
End of report
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