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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 01 Nov, 2007
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 236278
Prefixes after maximum aggregation: 121996
Deaggregation factor: 1.94
Unique aggregates announced to Internet: 114376
Total ASes present in the Internet Routing Table: 26599
Prefixes per ASN: 8.88
Origin-only ASes present in the Internet Routing Table: 23161
Origin ASes announcing only one prefix: 11295
Transit ASes present in the Internet Routing Table: 3438
Transit-only ASes present in the Internet Routing Table: 79
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 66
Max AS path prepend of ASN ( 3816) 64
Prefixes from unregistered ASNs in the Routing Table: 28
Unregistered ASNs in the Routing Table: 7
Prefixes from 32-bit ASNs in the Routing Table: 8
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 1785491072
Equivalent to 106 /8s, 108 /16s and 110 /24s
Percentage of available address space announced: 48.2
Percentage of allocated address space announced: 61.6
Percentage of available address space allocated: 78.2
Total number of prefixes smaller than registry allocations: 109734
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55056
Total APNIC prefixes after maximum aggregation: 20702
APNIC Deaggregation factor: 2.66
Prefixes being announced from the APNIC address blocks: 51981
Unique aggregates announced from the APNIC address blocks: 21959
APNIC Region origin ASes present in the Internet Routing Table: 3078
APNIC Prefixes per ASN: 16.89
APNIC Region origin ASes announcing only one prefix: 802
APNIC Region transit ASes present in the Internet Routing Table: 472
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 323573952
Equivalent to 19 /8s, 73 /16s and 88 /24s
Percentage of available APNIC address space announced: 74.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 114/7, 116/6, 120/6, 124/7, 126/8
202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 111030
Total ARIN prefixes after maximum aggregation: 63862
ARIN Deaggregation factor: 1.74
Prefixes being announced from the ARIN address blocks: 82071
Unique aggregates announced from the ARIN address blocks: 32527
ARIN Region origin ASes present in the Internet Routing Table: 11922
ARIN Prefixes per ASN: 6.88
ARIN Region origin ASes announcing only one prefix: 4599
ARIN Region transit ASes present in the Internet Routing Table: 1108
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 349743744
Equivalent to 20 /8s, 216 /16s and 170 /24s
Percentage of available ARIN address space announced: 77.2
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 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, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 49340
Total RIPE prefixes after maximum aggregation: 31785
RIPE Deaggregation factor: 1.55
Prefixes being announced from the RIPE address blocks: 46291
Unique aggregates announced from the RIPE address blocks: 30558
RIPE Region origin ASes present in the Internet Routing Table: 10437
RIPE Prefixes per ASN: 4.44
RIPE Region origin ASes announcing only one prefix: 5546
RIPE Region transit ASes present in the Internet Routing Table: 1636
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 334960512
Equivalent to 19 /8s, 247 /16s and 23 /24s
Percentage of available RIPE address space announced: 76.8
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055
RIPE Address Blocks 62/8, 77/8, 78/7, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 17619
Total LACNIC prefixes after maximum aggregation: 4567
LACNIC Deaggregation factor: 3.86
Prefixes being announced from the LACNIC address blocks: 15621
Unique aggregates announced from the LACNIC address blocks: 8878
LACNIC Region origin ASes present in the Internet Routing Table: 870
LACNIC Prefixes per ASN: 17.96
LACNIC Region origin ASes announcing only one prefix: 279
LACNIC Region transit ASes present in the Internet Routing Table: 149
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 66
Number of LACNIC addresses announced to Internet: 45739008
Equivalent to 2 /8s, 185 /16s and 236 /24s
Percentage of available LACNIC address space announced: 45.4
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 186/7, 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 3196
Total AfriNIC prefixes after maximum aggregation: 1064
AfriNIC Deaggregation factor: 3.00
Prefixes being announced from the AfriNIC address blocks: 2305
Unique aggregates announced from the AfriNIC address blocks: 1397
AfriNIC Region origin ASes present in the Internet Routing Table: 212
AfriNIC Prefixes per ASN: 10.87
AfriNIC Region origin ASes announcing only one prefix: 69
AfriNIC Region transit ASes present in the Internet Routing Table: 38
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 7602944
Equivalent to 0 /8s, 116 /16s and 3 /24s
Percentage of available AfriNIC address space announced: 22.7
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4755 1475 383 69 Videsh Sanchar Nigam Ltd. Aut
9583 1110 108 15 Sify Limited
4134 1098 11539 299 CHINANET-BACKBONE
9498 1018 550 65 BHARTI BT INTERNET LTD.
17488 874 57 69 Hathway IP Over Cable Interne
4766 814 5473 327 Korea Telecom (KIX)
23577 781 34 682 Korea Telecom (ATM-MPLS)
7545 717 159 121 TPG Internet Pty Ltd
18101 609 119 53 Reliance Infocom Ltd Internet
1221 546 1951 425 Telstra Pty Ltd
9829 530 1312 9 BSNL National Internet Backbo
4812 524 866 77 China Telecom (Shanghai)
4668 520 68 10 LG-EDS Systems Inc.
17676 504 10919 64 Softbank BB Corp.
4808 499 797 120 CNCGROUP IP network: China169
4802 487 133 141 Wantree Development
9443 441 121 72 Primus Telecommunications
7474 380 202 266 SingTel Optus Pty Ltd
17974 366 142 16 PT TELEKOMUNIKASI INDONESIA
4837 357 5049 168 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1500 6146 1006 AT&T WorldNet Services
4323 1353 1010 355 Time Warner Telecom
2386 1243 629 754 AT&T Data Communications Serv
11492 1161 119 42 Cable One
6478 1117 328 198 AT&T Worldnet Services
6197 1030 718 508 BellSouth Network Solutions,
18566 1028 288 9 Covad Communications
174 992 6850 845 Cogent Communications
7011 979 290 561 Citizens Utilities
701 890 6552 696 UUNET Technologies, Inc.
20115 848 774 457 Charter Communications
1239 801 2729 559 Sprint
22773 800 2133 54 Cox Communications, Inc.
19262 795 2857 184 Verizon Global Networks
3356 776 10899 405 Level 3 Communications, LLC
209 729 3784 573 Qwest
5668 663 176 17 CenturyTel Internet Holdings,
3561 590 2325 377 Savvis
6517 587 163 34 Yipes Communications, Inc.
1785 586 395 247 AppliedTheory Corporation
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 470 1919 384 UUNET - Commercial IP service
9116 336 168 28 Goldenlines main autonomous s
3301 316 1441 293 TeliaNet Sweden
3320 315 6035 262 Deutsche Telekom AG
8551 310 298 41 Bezeq International
6746 273 129 251 Dynamic Network Technologies,
8708 273 421 244 Romania Data Systems S.A.
8866 269 62 25 Bulgarian Telecommunication C
680 268 2045 254 DFN-IP service G-WiN
3215 264 2504 99 France Telecom Transpac
8220 255 444 237 COLT Telecommunications
3352 235 1932 41 Ibernet, Internet Access Netw
3269 228 2935 75 TELECOM ITALIA
8452 227 188 7 TEDATA
9121 212 1442 25 TTnet Autonomous System
3300 199 172 95 AUCS Communications Services
3246 196 257 186 Song Networks
12479 195 578 6 Uni2 Autonomous System
1257 194 1195 177 SWIPnet Swedish IP Network
3292 193 1380 177 TDC Tele Danmark
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1159 2406 219 UniNet S.A. de C.V.
11830 514 299 9 Instituto Costarricense de El
16814 427 27 10 NSS, S.A.
14522 378 32 7 SatNet S.A.
11172 377 114 60 Servicios Alestra S.A de C.V
7303 364 176 52 Telecom Argentina Stet-France
6471 352 77 37 ENTEL CHILE S.A.
22047 317 246 13 VTR PUNTO NET S.A.
10481 301 120 10 Prima S.A.
14117 285 19 15 Telefonica del Sur S.A.
10620 265 73 27 TVCABLE BOGOTA
6147 242 182 20 Telefonica Del Peru
11556 236 128 4 Cable-Wireless Panama
6503 214 187 84 AVANTEL, S.A.
23216 213 17 47 RAMtelecom Telecomunicaciones
7738 205 538 24 Telecomunicacoes da Bahia S.A
28573 202 314 27 NET Servicos de Comunicao S.A
8163 183 11 8 METROTEL REDES S.A.
21826 182 32 47 INTERCABLE
20299 181 33 30 NEWCOM AMERICAS
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 379 59 40 LINKdotNET AS number
3741 279 869 225 The Internet Solution
20858 195 34 3 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
2018 140 299 115 Tertiary Education Network
33783 127 8 11 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 100 6 3 Starcomms Nigeria Limited
24835 88 48 6 RAYA Telecom - Egypt
15475 83 84 4 Nile Online
2905 75 174 72 The Internetworking Company o
23889 73 24 15 MAURITIUS TELECOM
20484 63 5 5 Yalla Online Autonomous Syste
15706 55 12 4 Sudatel Internet Exchange Aut
29571 55 11 7 Ci Telecom Autonomous system
33774 48 33 26 AS Number for Telecom Algeria
5713 46 294 36 Telkom SA Ltd
12455 36 6 3 Jambonet Autonomous system
8524 32 2 10 AUCEGYPT Autonomous System
21152 31 2 5 AS for the uplinks of Soficom
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1475 1406 Videsh Sanchar Nigam Ltd. Aut
11492 1161 1119 Cable One
9583 1110 1095 Sify Limited
18566 1028 1019 Covad Communications
4323 1353 998 Time Warner Telecom
9498 1018 953 BHARTI BT INTERNET LTD.
8151 1159 940 UniNet S.A. de C.V.
6478 1117 919 AT&T Worldnet Services
17488 874 805 Hathway IP Over Cable Interne
4134 1098 799 CHINANET-BACKBONE
22773 800 746 Cox Communications, Inc.
5668 663 646 CenturyTel Internet Holdings,
19262 795 611 Verizon Global Networks
7545 717 596 TPG Internet Pty Ltd
18101 609 556 Reliance Infocom Ltd Internet
6517 587 553 Yipes Communications, Inc.
6197 1030 522 BellSouth Network Solutions,
19916 569 522 OLM LLC
9829 530 521 BSNL National Internet Backbo
4668 520 510 LG-EDS Systems Inc.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
64250 RESERVED 59.144.44.0/24 9498 BHARTI BT INTERNET L
64999 PRIVATE 78.24.120.0/23 3257 Tiscali Intl Network
64999 PRIVATE 78.24.122.0/23 3257 Tiscali Intl Network
64999 PRIVATE 78.24.124.0/24 3257 Tiscali Intl Network
64999 PRIVATE 78.24.125.0/24 3257 Tiscali Intl Network
64999 PRIVATE 78.24.126.0/24 3257 Tiscali Intl Network
64999 PRIVATE 78.24.127.0/24 3257 Tiscali Intl Network
65100 PRIVATE 80.91.113.0/24 33924 ProNet Autonomous Sy
64250 RESERVED 122.167.64.0/19 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.96.0/20 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.112.0/21 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.176.0/21 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.188.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.192.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.196.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.200.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.204.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.208.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.212.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.216.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.220.0/22 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.240.0/23 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.242.0/23 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.244.0/23 9498 BHARTI BT INTERNET L
64250 RESERVED 122.167.246.0/23 9498 BHARTI BT INTERNET L
64250 RESERVED 122.171.0.0/24 9498 BHARTI BT INTERNET L
64250 RESERVED 122.171.1.0/24 9498 BHARTI BT INTERNET L
64780 PRIVATE 124.14.224.0/19 18118 CITIC Networks Manag
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
172.33.1.0/24 7018 AT&T WorldNet Services
192.0.10.0/24 9498 BHARTI BT INTERNET LTD.
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.153.136.0/21 721 DLA Systems Automation Center
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:16 /11:38 /12:136
/13:269 /14:480 /15:950 /16:9714 /17:4166 /18:6682
/19:14580 /20:16667 /21:15528 /22:19828 /23:20810 /24:123935
/25:777 /26:1022 /27:542 /28:98 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1152 1161 Cable One
6478 1116 1117 AT&T Worldnet Services
18566 1010 1028 Covad Communications
9583 948 1110 Sify Limited
2386 933 1243 AT&T Data Communications Serv
7011 866 979 Citizens Utilities
4755 845 1475 Videsh Sanchar Nigam Ltd. Aut
7018 826 1500 AT&T WorldNet Services
6197 774 1030 BellSouth Network Solutions,
23577 772 781 Korea Telecom (ATM-MPLS)
9498 704 1018 BHARTI BT INTERNET LTD.
17488 689 874 Hathway IP Over Cable Interne
4766 605 814 Korea Telecom (KIX)
4323 573 1353 Time Warner Telecom
19916 564 569 OLM LLC
6517 543 587 Yipes Communications, Inc.
5668 521 663 CenturyTel Internet Holdings,
4668 510 520 LG-EDS Systems Inc.
18101 509 609 Reliance Infocom Ltd Internet
855 443 543 Canadian Research Network
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:87 12:1797 15:19 16:3 17:6
18:13 20:36 24:987 25:1 32:58 33:3
38:359 40:64 41:336 44:2 47:8 52:3
55:3 56:3 57:21 58:472 59:415 60:382
61:987 62:937 63:1990 64:3284 65:2374 66:3585
67:851 68:674 69:2003 70:467 71:108 72:1409
73:6 74:740 75:263 76:155 77:409 78:262
79:7 80:857 81:804 82:581 83:353 84:637
85:830 86:347 87:583 88:284 89:1044 90:39
91:702 92:4 96:1 97:6 98:10 116:418
117:203 118:42 121:327 122:635 123:205 124:701
125:1036 128:278 129:195 130:137 131:366 132:55
133:9 134:193 135:34 136:183 137:82 138:156
139:76 140:512 141:145 142:371 143:257 144:316
145:46 146:327 147:130 148:487 149:187 150:111
151:137 152:92 153:121 154:11 155:261 156:162
157:224 158:159 159:195 160:142 161:100 162:188
163:183 164:499 165:399 166:290 167:308 168:501
169:126 170:419 171:22 172:3 189:103 190:1220
192:5715 193:3981 194:3205 195:2454 196:929 198:3802
199:3227 200:5231 201:1228 202:7424 203:7742 204:3979
205:1991 206:2409 207:2782 208:2914 209:3592 210:2495
211:1078 212:1312 213:1520 214:423 215:43 216:4100
217:1196 218:321 219:391 220:1018 221:403 222:265
End of report
