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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 01 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108790
Prefixes after maximum aggregation: 71944
Unique aggregates announced to Internet: 52499
Total ASes present in the Internet Routing Table: 12477
Origin-only ASes present in the Internet Routing Table: 10797
Origin ASes announcing only one prefix: 4720
Transit ASes present in the Internet Routing Table: 1680
Transit-only ASes present in the Internet Routing Table: 61
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: 25
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: 1164134280
Equivalent to 69 /8s, 99 /16s and 71 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72797
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17555
Total APNIC prefixes after maximum aggregation: 10633
Prefixes being announced from the APNIC address blocks: 16004
Unique aggregates announced from the APNIC address blocks: 9850
APNIC Region origin ASes present in the Internet Routing Table: 1440
APNIC Region origin ASes announcing only one prefix: 481
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79087168
Equivalent to 4 /8s, 182 /16s and 198 /24s
Percentage of available APNIC address space announced: 58.5
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: 73162
Total ARIN prefixes after maximum aggregation: 47278
Prefixes being announced from the ARIN address blocks: 51355
Unique aggregates announced from the ARIN address blocks: 17123
ARIN Region origin ASes present in the Internet Routing Table: 7375
ARIN Region origin ASes announcing only one prefix: 2289
ARIN Region transit ASes present in the Internet Routing Table: 753
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 185249476
Equivalent to 11 /8s, 10 /16s and 174 /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: 18072
Total RIPE prefixes after maximum aggregation: 14033
Prefixes being announced from the RIPE address blocks: 14848
Unique aggregates announced from the RIPE address blocks: 9844
RIPE Region origin ASes present in the Internet Routing Table: 3600
RIPE Region origin ASes announcing only one prefix: 1950
RIPE Region transit ASes present in the Internet Routing Table: 656
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106570240
Equivalent to 6 /8s, 90 /16s and 34 /24s
Percentage of available RIPE address space announced: 70.6
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 976 Telstra Pty Ltd
4538 451 1162 16 China Education and Research
703 396 351 298 UUNET Technologies, Inc.
2907 394 1893 364 SINET Japan
2764 392 377 368 connect.com.au pty ltd
9394 323 112 3 CHINA RAILWAY Internet(CRNET)
7474 300 286 204 Optus Communications Pty Ltd
4755 298 113 86 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 208 1394 147 Korea Internet Exchange for "
17557 197 15 86 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 122 21 82 The Internet Group Limited
4713 116 898 102 NTT Communications Corporatio
4780 116 186 40 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1115 2622 864 UUNET Technologies, Inc.
3301 405 924 358 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 195 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 165 289 119 LANLINK autonomous system
8708 153 21 141 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 115 7 36 MobiFon S.A.
517 103 227 101 KPNQwest Germany GmbH
5603 95 13 60 SiOL Internet d.o.o.
1290 93 411 68 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 2070 8317 1496 UUNET Technologies, Inc.
7018 1743 7577 977 AT&T
1 838 8153 612 BBN Planet
3908 800 1656 464 Supernet, Inc.
1239 781 3213 607 Sprint
7046 614 833 415 UUNET Technologies, Inc.
4323 611 414 221 Time Warner Communications, I
852 560 978 365 Telus Advanced Communications
209 519 1876 297 Qwest
690 495 72 310 Merit Network
2914 454 2197 423 Verio, Inc.
7132 450 494 160 Southwestern Bell Internet Se
3549 429 820 219 Global Crossing
705 400 110 277 UUNET Technologies, Inc.
2149 386 209 323 Performance Systems, Inc.
2386 386 353 244 AT&T Data Communications Serv
3561 377 2220 330 Cable & Wireless USA
3967 370 375 198 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 1743 766 AT&T
4538 451 435 China Education and Research
4323 611 390 Time Warner Communications, I
1221 1335 359 Telstra Pty Ltd
3908 800 336 Supernet, Inc.
4151 336 320 USDA
9394 323 320 CHINA RAILWAY Internet(CRNET)
7132 450 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1115 251 UUNET Technologies, Inc.
6347 312 233 SAVVIS Communications Corpora
1 838 226 BBN Planet
209 519 222 Qwest
7843 261 222 Adelphia Corp.
4755 298 212 Videsh Sanchar Nigam Ltd. Aut
3549 429 210 Global Crossing
4355 238 207 EarthLink, Inc.
1580 209 200 HQ, 5th Signal Command
7046 614 199 UUNET Technologies, Inc.
852 560 195 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23103 UNALLOCATED 12.147.166.0/24 7018 AT&T
22790 UNALLOCATED 64.29.112.0/20 6467 E.Spire Communicatio
23109 UNALLOCATED 64.241.52.0/24 10910 InterNAP Network Ser
23125 UNALLOCATED 65.192.95.0/24 1239 Sprint
23089 UNALLOCATED 65.215.97.0/24 1 BBN Planet
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
24578 UNALLOCATED 81.16.0.0/20 21414 Autonomous System of
23098 UNALLOCATED 144.9.72.0/24 12179 InterNAP Network Ser
23098 UNALLOCATED 144.9.73.0/24 12179 InterNAP Network Ser
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
24581 UNALLOCATED 193.110.116.0/22 702 UUNET Technologies,
24610 UNALLOCATED 193.110.124.0/22 15497 Colocall Autonomous
24593 UNALLOCATED 193.110.162.0/23 6877 UTEL Network Autonom
21464 UNALLOCATED 193.129.168.0/24 702 UUNET Technologies,
24617 UNALLOCATED 195.29.168.0/24 5391 HT, HiNet
22784 UNALLOCATED 198.31.101.0/24 19116 airBand Communicatio
22629 UNALLOCATED 199.96.16.0/21 19092 Touch America
22629 UNALLOCATED 199.96.24.0/22 19092 Touch America
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
126.0.0.0/8 7336 Compass Communications
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 /14:233 /15:392 /16:7151 /17:1418 /18:2485
/19:7334 /20:6702 /21:4828 /22:7316 /23:8981 /24:60719
/25:232 /26:298 /27:142 /28:106 /29:105 /30:135
/31:0 /32:42
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1321 2070 UUNET Technologies, Inc.
1221 1185 1335 Telstra Pty Ltd
7018 1146 1743 AT&T
702 737 1115 UUNET Technologies, Inc.
3908 553 800 Supernet, Inc.
4323 497 611 Time Warner Communications, I
690 491 495 Merit Network
1239 459 781 Sprint
7046 443 614 UUNET Technologies, Inc.
1 432 838 BBN Planet
2764 348 392 connect.com.au pty ltd
852 345 560 Telus Advanced Communications
209 341 519 Qwest
705 341 400 UUNET Technologies, Inc.
703 317 396 UUNET Technologies, Inc.
2386 311 386 AT&T Data Communications Serv
9394 311 323 CHINA RAILWAY Internet(CRNET)
3549 298 429 Global Crossing
2149 291 386 Performance Systems, Inc.
4151 290 336 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:735 13:10 15:1 17:5
20:4 24:712 25:1 32:180 38:12 40:6
44:1 57:14 61:215 62:162 63:1871 64:1099
65:1005 66:616 67:32 68:6 80:168 81:4
128:61 129:125 130:23 131:52 132:11 133:2
134:128 135:10 136:240 137:105 138:116 139:46
140:162 141:60 142:65 143:39 144:151 145:12
146:214 147:136 148:143 149:87 150:39 151:43
152:372 153:34 154:8 155:82 156:77 157:125
158:74 159:87 160:26 161:54 162:96 163:125
164:94 165:126 166:228 167:163 168:118 169:47
170:290 171:4 192:5438 193:2216 194:2044 195:813
196:446 198:3742 199:3289 200:2309 201:1 202:2903
203:4530 204:3302 205:2146 206:2618 207:2625 208:2572
209:2903 210:530 211:171 212:890 213:593 214:9
215:18 216:3006 217:433 218:10
End of report
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