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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 31 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108566
Prefixes after maximum aggregation: 71986
Unique aggregates announced to Internet: 51961
Total ASes present in the Internet Routing Table: 12472
Origin-only ASes present in the Internet Routing Table: 10797
Origin ASes announcing only one prefix: 4707
Transit ASes present in the Internet Routing Table: 1675
Transit-only ASes present in the Internet Routing Table: 59
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: 14
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 13
Number of addresses announced to Internet: 1153587848
Equivalent to 68 /8s, 194 /16s and 90 /24s
Percentage of available address space announced: 31.1
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72603
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17290
Total APNIC prefixes after maximum aggregation: 10631
Prefixes being announced from the APNIC address blocks: 15754
Unique aggregates announced from the APNIC address blocks: 9852
APNIC Region origin ASes present in the Internet Routing Table: 1439
APNIC Region origin ASes announcing only one prefix: 480
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78901056
Equivalent to 4 /8s, 179 /16s and 239 /24s
Percentage of available APNIC address space announced: 58.3
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: 73239
Total ARIN prefixes after maximum aggregation: 47349
Prefixes being announced from the ARIN address blocks: 51419
Unique aggregates announced from the ARIN address blocks: 17122
ARIN Region origin ASes present in the Internet Routing Table: 7380
ARIN Region origin ASes announcing only one prefix: 2283
ARIN Region transit ASes present in the Internet Routing Table: 757
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 185122756
Equivalent to 11 /8s, 8 /16s and 191 /24s
Percentage of available ARIN address space announced: 69.0
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: 18036
Total RIPE prefixes after maximum aggregation: 14006
Prefixes being announced from the RIPE address blocks: 14811
Unique aggregates announced from the RIPE address blocks: 9303
RIPE Region origin ASes present in the Internet Routing Table: 3593
RIPE Region origin ASes announcing only one prefix: 1944
RIPE Region transit ASes present in the Internet Routing Table: 651
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 113250304
Equivalent to 6 /8s, 192 /16s and 16 /24s
Percentage of available RIPE address space announced: 75.0
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 1260 975 Telstra Pty Ltd
4538 450 1162 16 China Education and Research
703 402 342 305 UUNET Technologies, Inc.
2764 394 378 370 connect.com.au pty ltd
2907 394 1893 364 SINET Japan
4755 300 113 87 Videsh Sanchar Nigam Ltd. Aut
7474 300 286 204 Optus Communications Pty Ltd
4134 268 1858 100 Data Communications Bureau
4766 208 1394 147 Korea Internet Exchange for "
17557 195 15 85 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
7539 155 138 150 TANet2, sponsored by NSC, TAI
9768 145 385 88 Korea Telecom
1659 142 924 34 Taiwan Academic Network (TANe
4740 142 34 116 OzEmail ISP
9583 137 32 5 Satyam Infoway Ltd.,
7657 121 21 81 The Internet Group Limited
4713 116 898 102 NTT Communications Corporatio
4780 116 186 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 1117 2620 864 UUNET Technologies, Inc.
3301 404 924 357 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 238 562 152 France Telecom / &Equant
680 233 2148 231 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 198 82 95 Concert European Core Network
3320 193 1961 169 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 165 289 119 LANLINK autonomous system
8708 152 20 141 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 118 695 72 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 95 13 60 SiOL Internet d.o.o.
1290 94 411 69 PSINet UK Ltd.
5511 93 192 82 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2082 8317 1502 UUNET Technologies, Inc.
7018 1740 7569 975 AT&T
1 835 8152 608 BBN Planet
3908 798 1656 465 Supernet, Inc.
1239 776 3189 604 Sprint
7046 615 833 415 UUNET Technologies, Inc.
4323 612 414 221 Time Warner Communications, I
852 566 979 366 Telus Advanced Communications
209 519 1860 295 Qwest
690 496 72 310 Merit Network
2914 453 2196 422 Verio, Inc.
7132 452 504 162 Southwestern Bell Internet Se
3549 426 836 222 Global Crossing
705 406 113 277 UUNET Technologies, Inc.
2386 387 353 245 AT&T Data Communications Serv
2149 386 209 323 Performance Systems, Inc.
3561 379 2236 332 Cable & Wireless USA
3967 369 375 200 Exodus Communication
3741 349 731 240 The Internet Solution
577 347 604 217 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1740 765 AT&T
4538 450 434 China Education and Research
4323 612 391 Time Warner Communications, I
1221 1335 360 Telstra Pty Ltd
3908 798 333 Supernet, Inc.
4151 337 321 USDA
7132 452 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1117 253 UUNET Technologies, Inc.
6347 314 233 SAVVIS Communications Corpora
1 835 227 BBN Planet
209 519 224 Qwest
7843 261 222 Adelphia Corp.
4755 300 213 Videsh Sanchar Nigam Ltd. Aut
4355 238 207 EarthLink, Inc.
3549 426 204 Global Crossing
7046 615 200 UUNET Technologies, Inc.
852 566 200 Telus Advanced Communications
1580 209 200 HQ, 5th Signal Command
6198 298 197 BellSouth Network Solutions,
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
22790 UNALLOCATED 64.29.112.0/20 6467 E.Spire Communicatio
23109 UNALLOCATED 64.241.52.0/24 10910 InterNAP Network Ser
65400 PRIVATE 66.7.130.0/24 6517 Yipes Communications
21468 UNALLOCATED 80.243.224.0/23 6739 Cableuropa - ONO
21450 UNALLOCATED 80.246.128.0/20 8584 Barak AS
23098 UNALLOCATED 144.9.72.0/24 12179 InterNAP Network Ser
23098 UNALLOCATED 144.9.73.0/24 12179 InterNAP Network Ser
24581 UNALLOCATED 193.110.116.0/22 702 UUNET Technologies,
24610 UNALLOCATED 193.110.124.0/22 15497 Colocall Autonomous
22336 UNALLOCATED 205.242.9.0/24 1239 Sprint
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
21193 UNALLOCATED 213.176.160.0/19 8903 BT Tel AS 1
22763 UNALLOCATED 216.23.254.0/23 1239 Sprint
17939 UNALLOCATED 218.216.32.0/19 2497 IIJ
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 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 /15:392 /16:7152 /17:1415 /18:2486
/19:7318 /20:6692 /21:4835 /22:7312 /23:8980 /24:60715
/25:224 /26:211 /27:113 /28:84 /29:59 /30:135
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1330 2082 UUNET Technologies, Inc.
1221 1185 1335 Telstra Pty Ltd
7018 1149 1740 AT&T
702 739 1117 UUNET Technologies, Inc.
3908 551 798 Supernet, Inc.
4323 498 612 Time Warner Communications, I
690 492 496 Merit Network
1239 457 776 Sprint
7046 445 615 UUNET Technologies, Inc.
1 430 835 BBN Planet
852 349 566 Telus Advanced Communications
2764 349 394 connect.com.au pty ltd
705 346 406 UUNET Technologies, Inc.
209 342 519 Qwest
703 328 402 UUNET Technologies, Inc.
2386 312 387 AT&T Data Communications Serv
3549 294 426 Global Crossing
2149 291 386 Performance Systems, Inc.
4151 291 337 USDA
7066 275 304 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:735 13:10 15:1 17:5
20:1 24:706 25:1 32:180 38:12 40:5
44:2 57:14 61:216 62:161 63:1876 64:1100
65:1007 66:617 67:31 68:6 80:161 81:4
128:61 129:126 130:23 131:53 132:11 133:2
134:128 135:10 136:241 137:105 138:146 139:46
140:164 141:64 142:65 143:39 144:157 145:12
146:213 147:137 148:143 149:86 150:39 151:43
152:372 153:34 154:8 155:82 156:77 157:125
158:74 159:86 160:26 161:54 162:96 163:125
164:93 165:116 166:225 167:162 168:118 169:47
170:288 171:4 192:5432 193:2221 194:2034 195:801
196:446 198:3734 199:3293 200:2318 201:1 202:2898
203:4524 204:3310 205:2151 206:2625 207:2622 208:2572
209:2896 210:542 211:151 212:892 213:591 214:9
215:18 216:3009 217:433 218:11
End of report
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