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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 Wed 16 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107724
Prefixes after maximum aggregation: 71995
Unique aggregates announced to Internet: 52191
Total ASes present in the Internet Routing Table: 12375
Origin-only ASes present in the Internet Routing Table: 10740
Origin ASes announcing only one prefix: 4660
Transit ASes present in the Internet Routing Table: 1635
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: 1
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: 1161580748
Equivalent to 69 /8s, 60 /16s and 80 /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: 71932
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17234
Total APNIC prefixes after maximum aggregation: 10620
Prefixes being announced from the APNIC address blocks: 15706
Unique aggregates announced from the APNIC address blocks: 9755
APNIC Region origin ASes present in the Internet Routing Table: 1430
APNIC Region origin ASes announcing only one prefix: 465
APNIC Region transit ASes present in the Internet Routing Table: 243
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78595136
Equivalent to 4 /8s, 175 /16s and 68 /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: 72639
Total ARIN prefixes after maximum aggregation: 47466
Prefixes being announced from the ARIN address blocks: 51906
Unique aggregates announced from the ARIN address blocks: 17093
ARIN Region origin ASes present in the Internet Routing Table: 7327
ARIN Region origin ASes announcing only one prefix: 2270
ARIN Region transit ASes present in the Internet Routing Table: 746
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183447812
Equivalent to 10 /8s, 239 /16s and 49 /24s
Percentage of available ARIN address space announced: 68.3
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: 17851
Total RIPE prefixes after maximum aggregation: 13909
Prefixes being announced from the RIPE address blocks: 14593
Unique aggregates announced from the RIPE address blocks: 9746
RIPE Region origin ASes present in the Internet Routing Table: 3560
RIPE Region origin ASes announcing only one prefix: 1925
RIPE Region transit ASes present in the Internet Routing Table: 637
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105987328
Equivalent to 6 /8s, 81 /16s and 61 /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 1332 1241 983 Telstra Pty Ltd
4538 448 1098 14 China Education and Research
703 398 337 305 UUNET Technologies, Inc.
2764 395 378 371 connect.com.au pty ltd
2907 393 1908 363 SINET Japan
7474 314 286 205 Optus Communications Pty Ltd
4755 309 114 91 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 198 1380 145 Korea Internet Exchange for "
9443 171 45 68 Primus Telecommunications
17557 165 13 81 Pakistan Telecom
7539 147 137 146 TANet2, sponsored by NSC, TAI
9768 145 381 88 Korea Telecom
1659 144 924 34 Taiwan Academic Network (TANe
4740 144 34 118 OzEmail ISP
9583 144 32 5 Satyam Infoway Ltd.,
7657 123 21 83 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4780 117 186 40 Digital United Inc.
4713 115 894 102 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1087 2618 856 UUNET Technologies, Inc.
3301 390 924 345 TeliaNet Sweden
1257 255 489 249 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 156 62 85 Concert European Core Network
8708 149 20 139 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 126 575 124 Swisscom Ltd
3269 114 661 69 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 2148 8810 1537 UUNET Technologies, Inc.
7018 1175 7528 908 AT&T
1 862 8396 633 BBN Planet
3908 802 1639 474 Supernet, Inc.
1239 777 3156 603 Sprint
3967 746 360 318 Exodus Communication
7046 668 837 434 UUNET Technologies, Inc.
4323 611 412 215 Time Warner Communications, I
852 581 979 383 Telus Advanced Communications
690 545 77 321 Merit Network
209 513 1875 294 Qwest
705 493 445 307 UUNET Technologies, Inc.
2914 454 2194 423 Verio, Inc.
7132 421 486 160 Southwestern Bell Internet Se
4293 418 90 310 Cable & Wireless USA
3549 415 831 210 Global Crossing
2149 393 214 329 Performance Systems, Inc.
3561 370 2188 322 Cable & Wireless USA
3741 350 730 239 The Internet Solution
577 349 604 219 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 448 434 China Education and Research
3967 746 428 Exodus Communication
4323 611 396 Time Warner Communications, I
1221 1332 349 Telstra Pty Ltd
3908 802 328 Supernet, Inc.
4151 337 321 USDA
11371 278 271 Rhythms NetConnections
7018 1175 267 AT&T
7132 421 261 Southwestern Bell Internet Se
6347 324 241 SAVVIS Communications Corpora
7046 668 234 UUNET Technologies, Inc.
702 1087 231 UUNET Technologies, Inc.
1 862 229 BBN Planet
690 545 224 Merit Network
209 513 219 Qwest
4755 309 218 Videsh Sanchar Nigam Ltd. Aut
3549 415 205 Global Crossing
4355 231 200 EarthLink, Inc.
852 581 198 Telus Advanced Communications
6517 224 195 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,
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
/13:92 /14:231 /15:394 /16:7145 /17:1412 /18:2478
/19:7260 /20:6611 /21:4852 /22:7270 /23:8998 /24:59970
/25:227 /26:223 /27:129 /28:91 /29:74 /30:134
/31:0 /32:52
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1374 2148 UUNET Technologies, Inc.
1221 1185 1332 Telstra Pty Ltd
702 708 1087 UUNET Technologies, Inc.
7018 620 1175 AT&T
3967 561 746 Exodus Communication
3908 560 802 Supernet, Inc.
690 541 545 Merit Network
4323 505 611 Time Warner Communications, I
7046 500 668 UUNET Technologies, Inc.
1239 449 777 Sprint
1 441 862 BBN Planet
4293 406 418 Cable & Wireless USA
852 367 581 Telus Advanced Communications
705 360 493 UUNET Technologies, Inc.
2764 349 395 connect.com.au pty ltd
209 339 513 Qwest
703 325 398 UUNET Technologies, Inc.
2149 297 393 Performance Systems, Inc.
4151 291 337 USDA
3549 285 415 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:453 13:10 15:2 17:5
20:1 24:804 25:1 32:74 38:13 40:4
43:1 44:2 52:1 57:14 61:227 62:159
63:1896 64:1104 65:994 66:578 67:30 68:16
80:145 128:63 129:121 130:23 131:44 132:13
133:2 134:121 135:10 136:121 137:104 138:62
139:30 140:98 141:57 142:64 143:42 144:54
145:12 146:213 147:60 148:160 149:87 150:39
151:43 152:383 153:34 154:7 155:85 156:81
157:122 158:72 159:79 160:27 161:55 162:96
163:128 164:130 165:112 166:219 167:159 168:114
169:48 170:280 171:2 191:1 192:5393 193:2082
194:2050 195:805 196:432 198:3743 199:3224 200:2397
201:1 202:2880 203:4487 204:3299 205:2199 206:2746
207:2593 208:2809 209:2908 210:527 211:150 212:882
213:543 214:7 215:17 216:2959 217:410 218:12
End of report
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