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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 24 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107672
Total ASes present in the Internet Routing Table: 12137
Origin-only ASes present in the Internet Routing Table: 10554
Origin ASes announcing only one prefix: 4523
Transit ASes present in the Internet Routing Table: 1583
Transit-only ASes present in the Internet Routing Table: 52
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: 9
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: 1259278601
Equivalent to 75 /8s, 15 /16s and 17 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72755
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16903
Prefixes being announced from the APNIC address blocks: 15391
APNIC Region origin ASes present in the Internet Routing Table: 1407
APNIC Region origin ASes announcing only one prefix: 458
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: 88566650
Equivalent to 5 /8s, 71 /16s and 107 /24s
Percentage of available APNIC address space announced: 74.7
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 72951
Prefixes being announced from the ARIN address blocks: 52202
ARIN Region origin ASes present in the Internet Routing Table: 7212
ARIN Region origin ASes announcing only one prefix: 2205
ARIN Region transit ASes present in the Internet Routing Table: 729
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221421807
Equivalent to 13 /8s, 50 /16s and 160 /24s
Percentage of available ARIN address space announced: 82.5
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: 17812
Prefixes being announced from the RIPE address blocks: 14510
RIPE Region origin ASes present in the Internet Routing Table: 3467
RIPE Region origin ASes announcing only one prefix: 1860
RIPE Region transit ASes present in the Internet Routing Table: 603
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 110826720
Equivalent to 6 /8s, 155 /16s and 20 /24s
Percentage of available RIPE address space announced: 73.4
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 Description
1221 1542 1313 Telstra Pty Ltd
2764 406 357 connect.com.au pty ltd
703 383 343 UUNET Technologies, Inc.
2907 367 1847 SINET Japan
4755 340 169 Videsh Sanchar Nigam Ltd. Aut
7474 299 275 Optus Communications Pty Ltd
4134 254 1922 Data Communications Bureau
4766 186 1431 Korea Internet Exchange for "
4740 179 41 OzEmail ISP
9443 174 62 Primus Telecommunications
2521 166 172 PSINet Japan
1659 152 1051 Taiwan Academic Network (TANe
7539 152 171 TANet2, sponsored by NSC, TAI
17557 149 12 Pakistan Telecom
9583 142 46 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 122 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1052 2766 UUNET Technologies, Inc.
3301 428 933 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 235 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 196 704 Sonera Finland Autonomous Sys
3320 193 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 170 17 Romania Data Systems S.A.
719 166 292 LANLINK autonomous system
5400 138 62 Concert European Core Network
2856 135 778 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
1273 108 166 Cable & Wireless ECRC GmbH
12302 108 7 MobiFon S.A.
3269 107 809 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
5511 96 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2232 9162 UUNET Technologies, Inc.
7018 1087 7346 AT&T
3967 1040 482 Exodus Communication
1 831 8548 BBN Planet
7046 732 919 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
4323 612 478 Time Warner Communications, I
209 596 2216 Qwest
852 537 696 Telus Advanced Communications
690 498 71 Merit Network
2914 479 2268 Verio, Inc.
2149 468 285 Performance Systems, Inc.
705 436 251 UUNET Technologies, Inc.
3549 397 889 Global Crossing
3561 387 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 368 1255 USDA
577 352 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2232 9162 UUNET Technologies, Inc.
1221 1542 1313 Telstra Pty Ltd
7018 1087 7346 AT&T
702 1052 2766 UUNET Technologies, Inc.
3967 1040 482 Exodus Communication
1 831 8548 BBN Planet
7046 732 919 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
3908 694 1533 Supernet, Inc.
4323 612 478 Time Warner Communications, I
209 596 2216 Qwest
852 537 696 Telus Advanced Communications
690 498 71 Merit Network
2914 479 2268 Verio, Inc.
2149 468 285 Performance Systems, Inc.
705 436 251 UUNET Technologies, Inc.
3301 428 933 TeliaNet Sweden
2764 406 357 connect.com.au pty ltd
3549 397 889 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65025 PRIVATE 168.95.70.0/24 3462 Data Communication B
65025 PRIVATE 168.95.71.0/24 3462 Data Communication B
65025 PRIVATE 168.95.86.32/27 3462 Data Communication B
65026 PRIVATE 168.95.86.128/27 3462 Data Communication B
65026 PRIVATE 168.95.160.0/24 3462 Data Communication B
65026 PRIVATE 168.95.161.0/24 3462 Data Communication B
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
17940 UNALLOCATED 218.45.0.0/20 4713 NTT Communications C
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
100.0.0.0/24 10061 Financial Supervisory Service
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
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 /11:12 /12:36
/13:90 /14:221 /15:388 /16:7070 /17:1342 /18:2434
/19:7087 /20:6068 /21:4687 /22:7078 /23:8845 /24:60694
/25:333 /26:325 /27:269 /28:248 /29:156 /30:194
/31:0 /32:65
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1428 2232 UUNET Technologies, Inc.
1221 1397 1542 Telstra Pty Ltd
3967 858 1040 Exodus Communication
8010 703 719 PublicNet Communications, Inc
702 660 1052 UUNET Technologies, Inc.
7046 565 732 UUNET Technologies, Inc.
7018 558 1087 AT&T
4323 523 612 Time Warner Communications, I
690 495 498 Merit Network
3908 472 694 Supernet, Inc.
209 425 596 Qwest
1239 401 722 Sprint
1 397 831 BBN Planet
2764 363 406 connect.com.au pty ltd
852 358 537 Telus Advanced Communications
2149 354 468 Performance Systems, Inc.
705 343 436 UUNET Technologies, Inc.
4151 323 368 USDA
703 312 383 UUNET Technologies, Inc.
4755 292 340 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:1 12:421 13:10 15:1 17:5 20:1
24:833 25:1 26:1 32:76 38:13 40:1
43:1 44:2 47:2 52:1 53:2 57:12
61:124 62:160 63:1901 64:1462 65:946 66:732
67:7 80:98 100:1 128:61 129:111 130:23
131:41 132:12 133:2 134:131 135:10 136:103
137:98 138:61 139:34 140:89 141:58 142:67
143:43 144:55 145:12 146:210 147:61 148:187
149:88 150:42 151:191 152:386 153:37 154:8
155:85 156:90 157:107 158:69 159:71 160:45
161:51 162:82 163:130 164:122 165:99 166:204
167:160 168:117 169:45 170:297 171:2 192:5368
193:2040 194:2079 195:850 196:453 198:3754 199:3368
200:2415 201:1 202:2837 203:4584 204:3325 205:2125
206:2643 207:2663 208:2756 209:2983 210:589 211:146
212:941 213:533 214:9 215:15 216:2971 217:428
218:6
End of report
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