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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 Thu 20 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107740
Prefixes after maximum aggregation: 71812
Unique aggregates announced to Internet: 51949
Total ASes present in the Internet Routing Table: 12282
Origin-only ASes present in the Internet Routing Table: 10669
Origin ASes announcing only one prefix: 4599
Transit ASes present in the Internet Routing Table: 1613
Transit-only ASes present in the Internet Routing Table: 57
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: 1
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1144037440
Equivalent to 68 /8s, 48 /16s and 160 /24s
Percentage of available address space announced: 30.9
Percentage of allocated address space announced: 58.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72505
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17064
Total APNIC prefixes after maximum aggregation: 10566
Prefixes being announced from the APNIC address blocks: 15475
Unique aggregates announced from the APNIC address blocks: 9781
APNIC Region origin ASes present in the Internet Routing Table: 1427
APNIC Region origin ASes announcing only one prefix: 466
APNIC Region transit ASes present in the Internet Routing Table: 239
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 77849584
Equivalent to 4 /8s, 163 /16s and 227 /24s
Percentage of available APNIC address space announced: 57.6
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: 72850
Total ARIN prefixes after maximum aggregation: 47399
Prefixes being announced from the ARIN address blocks: 52262
Unique aggregates announced from the ARIN address blocks: 16956
ARIN Region origin ASes present in the Internet Routing Table: 7288
ARIN Region origin ASes announcing only one prefix: 2247
ARIN Region transit ASes present in the Internet Routing Table: 740
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 180052428
Equivalent to 10 /8s, 187 /16s and 97 /24s
Percentage of available ARIN address space announced: 67.1
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: 17826
Total RIPE prefixes after maximum aggregation: 13847
Prefixes being announced from the RIPE address blocks: 14530
Unique aggregates announced from the RIPE address blocks: 9636
RIPE Region origin ASes present in the Internet Routing Table: 3509
RIPE Region origin ASes announcing only one prefix: 1886
RIPE Region transit ASes present in the Internet Routing Table: 622
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 104169984
Equivalent to 6 /8s, 53 /16s and 130 /24s
Percentage of available RIPE address space announced: 69.0
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
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 1510 1261 1045 Telstra Pty Ltd
2764 400 376 374 connect.com.au pty ltd
703 394 336 302 UUNET Technologies, Inc.
2907 371 1832 341 SINET Japan
7474 311 285 202 Optus Communications Pty Ltd
4755 300 118 84 Videsh Sanchar Nigam Ltd. Aut
4134 265 1874 96 Data Communications Bureau
4766 184 1391 134 Korea Internet Exchange for "
2521 181 165 28 PSINet Japan
1659 175 924 34 Taiwan Academic Network (TANe
17557 173 13 83 Pakistan Telecom
9443 171 45 67 Primus Telecommunications
4740 154 34 127 OzEmail ISP
9583 150 32 3 Satyam Infoway Ltd.,
7539 147 122 146 TANet2, sponsored by NSC, TAI
4812 137 192 34 China Telecom (Group) - Shang
9768 134 360 83 Korea Telecom
17676 125 1920 7 XTAGE CORPORATION
4713 120 942 107 NTT Communications Corporatio
4780 117 186 42 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1091 2687 861 UUNET Technologies, Inc.
3301 425 910 354 TeliaNet Sweden
1257 253 473 250 SWIPnet Swedish IP Network
3215 236 555 151 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 216 721 176 Sonera Finland Autonomous Sys
3320 186 1960 165 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 147 59 84 Concert European Core Network
8708 146 20 138 Romania Data Systems S.A.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
5549 121 78 62 Nextra Deutschland GmbH + Co.
8895 116 89 40 Saudi Arabia AS
3269 114 662 70 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
517 109 231 107 KPNQwest Germany GmbH
8297 107 31 64 Teleglobe Autonomous System i
1290 96 396 71 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2171 8858 1537 UUNET Technologies, Inc.
7018 1098 7344 862 AT&T
3967 968 364 484 Exodus Communication
1 858 8405 655 BBN Planet
1239 784 3169 605 Sprint
3908 757 1622 476 Supernet, Inc.
8010 719 62 12 PublicNet Communications, Inc
7046 699 823 451 UUNET Technologies, Inc.
209 615 1877 299 Qwest
4323 585 364 201 Time Warner Communications, I
852 577 977 381 Telus Advanced Communications
690 528 76 315 Merit Network
705 481 350 301 UUNET Technologies, Inc.
2914 465 2212 436 Verio, Inc.
2149 405 215 339 Performance Systems, Inc.
3549 404 837 201 Global Crossing
7132 387 459 167 Southwestern Bell Internet Se
3561 386 2269 333 Cable & Wireless USA
3741 350 730 239 The Internet Solution
577 346 587 216 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 707 PublicNet Communications, Inc
3967 484 Exodus Communication
1221 465 Telstra Pty Ltd
4323 384 Time Warner Communications, I
4151 327 USDA
209 316 Qwest
3908 281 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 248 UUNET Technologies, Inc.
6347 238 SAVVIS Communications Corpora
7018 236 AT&T
702 230 UUNET Technologies, Inc.
7132 220 Southwestern Bell Internet Se
4755 216 Videsh Sanchar Nigam Ltd. Aut
690 213 Merit Network
1 203 BBN Planet
3549 203 Global Crossing
4355 198 EarthLink, Inc.
852 196 Telus Advanced Communications
6517 194 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.168.77.0/24 7539 TANet2, sponsored by NSC, TAI
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 /9:5 /10:7 /11:11 /12:37
/13:89 /14:227 /15:390 /16:7083 /17:1366 /18:2459
/19:7179 /20:6240 /21:4723 /22:7157 /23:8911 /24:60522
/25:312 /26:307 /27:210 /28:177 /29:112 /30:151
/31:0 /32:47
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1389 2171 UUNET Technologies, Inc.
1221 1364 1510 Telstra Pty Ltd
3967 784 968 Exodus Communication
702 708 1091 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 564 1098 AT&T
7046 535 699 UUNET Technologies, Inc.
690 525 528 Merit Network
3908 521 757 Supernet, Inc.
4323 496 585 Time Warner Communications, I
1239 450 784 Sprint
209 444 615 Qwest
1 425 858 BBN Planet
852 368 577 Telus Advanced Communications
705 359 481 UUNET Technologies, Inc.
2764 355 400 connect.com.au pty ltd
703 321 394 UUNET Technologies, Inc.
2149 308 405 Performance Systems, Inc.
4151 297 343 USDA
7474 276 311 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:440 13:10 15:2 17:5
20:1 24:805 25:1 32:73 38:13 40:4
43:1 44:2 52:1 53:2 57:12 61:167
62:153 63:1913 64:1499 65:1020 66:760 67:15
68:2 80:138 128:61 129:110 130:24 131:43
132:14 133:2 134:127 135:10 136:117 137:107
138:62 139:30 140:102 141:57 142:64 143:43
144:55 145:12 146:217 147:95 148:154 149:87
150:41 151:38 152:392 153:34 154:6 155:83
156:85 157:121 158:69 159:76 160:44 161:54
162:86 163:130 164:119 165:100 166:206 167:160
168:120 169:48 170:299 171:2 191:1 192:5357
193:2069 194:2063 195:819 196:429 198:3763 199:3309
200:2385 201:1 202:2855 203:4543 204:3331 205:2176
206:2605 207:2712 208:2618 209:2935 210:570 211:149
212:947 213:547 214:9 215:15 216:2959 217:395
218:11
End of report
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