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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 03 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 243223
Prefixes after maximum aggregation: 124802
Deaggregation factor: 1.95
Unique aggregates announced to Internet: 119318
Total ASes present in the Internet Routing Table: 27244
Prefixes per ASN: 8.93
Origin-only ASes present in the Internet Routing Table: 23750
Origin ASes announcing only one prefix: 11539
Transit ASes present in the Internet Routing Table: 3494
Transit-only ASes present in the Internet Routing Table: 70
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 37
Unregistered ASNs in the Routing Table: 14
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 866
Number of addresses announced to Internet: 1825074144
Equivalent to 108 /8s, 200 /16s and 107 /24s
Percentage of available address space announced: 49.2
Percentage of allocated address space announced: 61.1
Percentage of available address space allocated: 80.5
Percentage of address space in use by end-sites: 69.9
Total number of prefixes smaller than registry allocations: 114454
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55778
Total APNIC prefixes after maximum aggregation: 21123
APNIC Deaggregation factor: 2.64
Prefixes being announced from the APNIC address blocks: 53271
Unique aggregates announced from the APNIC address blocks: 23807
APNIC Region origin ASes present in the Internet Routing Table: 3118
APNIC Prefixes per ASN: 17.08
APNIC Region origin ASes announcing only one prefix: 819
APNIC Region transit ASes present in the Internet Routing Table: 462
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 328227744
Equivalent to 19 /8s, 144 /16s and 91 /24s
Percentage of available APNIC address space announced: 75.2
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 114/8, 115/8, 116/8,
117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8,
124/8, 125/8, 126/8, 202/8, 203/8, 210/8, 211/8,
218/8, 219/8, 220/8, 221/8, 222/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 114961
Total ARIN prefixes after maximum aggregation: 65308
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83887
Unique aggregates announced from the ARIN address blocks: 33386
ARIN Region origin ASes present in the Internet Routing Table: 12110
ARIN Prefixes per ASN: 6.93
ARIN Region origin ASes announcing only one prefix: 4672
ARIN Region transit ASes present in the Internet Routing Table: 1149
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356458880
Equivalent to 21 /8s, 63 /16s and 33 /24s
Percentage of available ARIN address space announced: 78.7
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, 64/8, 65/8, 66/8, 67/8, 68/8,
69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8,
76/8, 96/8, 97/8, 98/8, 99/8, 199/8, 204/8,
205/8, 206/8, 207/8, 208/8, 209/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 51435
Total RIPE prefixes after maximum aggregation: 32579
RIPE Deaggregation factor: 1.58
Prefixes being announced from the RIPE address blocks: 46796
Unique aggregates announced from the RIPE address blocks: 31428
RIPE Region origin ASes present in the Internet Routing Table: 10839
RIPE Prefixes per ASN: 4.32
RIPE Region origin ASes announcing only one prefix: 5688
RIPE Region transit ASes present in the Internet Routing Table: 1662
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 339637504
Equivalent to 20 /8s, 62 /16s and 117 /24s
Percentage of available RIPE address space announced: 77.9
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, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 193/8,
194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 18504
Total LACNIC prefixes after maximum aggregation: 4647
LACNIC Deaggregation factor: 3.98
Prefixes being announced from the LACNIC address blocks: 16894
Unique aggregates announced from the LACNIC address blocks: 9222
LACNIC Region origin ASes present in the Internet Routing Table: 898
LACNIC Prefixes per ASN: 18.81
LACNIC Region origin ASes announcing only one prefix: 295
LACNIC Region transit ASes present in the Internet Routing Table: 151
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48040960
Equivalent to 2 /8s, 221 /16s and 12 /24s
Percentage of available LACNIC address space announced: 47.7
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2514
Total AfriNIC prefixes after maximum aggregation: 1125
AfriNIC Deaggregation factor: 2.23
Prefixes being announced from the AfriNIC address blocks: 2793
Unique aggregates announced from the AfriNIC address blocks: 1488
AfriNIC Region origin ASes present in the Internet Routing Table: 208
AfriNIC Prefixes per ASN: 13.43
AfriNIC Region origin ASes announcing only one prefix: 65
AfriNIC Region transit ASes present in the Internet Routing Table: 36
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 9077760
Equivalent to 0 /8s, 138 /16s and 132 /24s
Percentage of available AfriNIC address space announced: 27.1
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 1558 384 75 Videsh Sanchar Nigam Ltd. Aut
9498 1149 549 61 BHARTI BT INTERNET LTD.
9583 1116 82 435 Sify Limited
17488 961 62 87 Hathway IP Over Cable Interne
4134 862 11849 310 CHINANET-BACKBONE
4766 843 5495 342 Korea Telecom (KIX)
23577 818 34 696 Korea Telecom (ATM-MPLS)
18101 615 127 61 Reliance Infocom Ltd Internet
9829 570 449 11 BSNL National Internet Backbo
4812 549 940 84 China Telecom (Shanghai)
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1429 6003 980 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1353 634 832 AT&T Data Communications Serv
11492 1215 136 19 Cable One
18566 1041 296 10 Covad Communications
7011 1035 301 597 Citizens Utilities
6197 1028 739 512 BellSouth Network Solutions,
174 972 6834 811 Cogent Communications
6478 909 234 104 AT&T Worldnet Services
701 896 6575 686 UUNET Technologies, Inc.
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3292 394 1650 357 TDC Tele Danmark
3301 330 1458 301 TeliaNet Sweden
3320 322 6020 267 Deutsche Telekom AG
8866 280 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 275 2046 256 DFN-IP service G-WiN
8708 272 420 242 Romania Data Systems S.A.
3215 271 2591 93 France Telecom Transpac
6746 271 128 249 Dynamic Network Technologies,
8220 250 422 226 COLT Telecommunications
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1161 2421 212 UniNet S.A. de C.V.
11830 547 299 9 Instituto Costarricense de El
7303 432 212 59 Telecom Argentina Stet-France
16814 428 27 11 NSS, S.A.
6471 394 85 39 ENTEL CHILE S.A.
11172 394 115 62 Servicios Alestra S.A de C.V
10620 355 93 26 TVCABLE BOGOTA
14117 351 23 16 Telefonica del Sur S.A.
22047 323 270 14 VTR PUNTO NET S.A.
10481 301 120 10 Prima S.A.
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 278 869 225 The Internet Solution
6713 143 135 11 Itissalat Al-MAGHRIB
2018 142 268 114 Tertiary Education Network
33783 128 9 14 EEPAD TISP TELECOM & INTERNET
24863 104 32 38 LINKdotNET AS number
33776 99 6 7 Starcomms Nigeria Limited
5536 91 6 40 Internet Egypt Network
23889 78 24 16 MAURITIUS TELECOM
29571 77 13 7 Ci Telecom Autonomous system
2905 76 174 73 The Internetworking Company o
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
4755 1558 384 75 Videsh Sanchar Nigam Ltd. Aut
7018 1429 6003 980 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1353 634 832 AT&T Data Communications Serv
11492 1215 136 19 Cable One
8151 1161 2421 212 UniNet S.A. de C.V.
9498 1149 549 61 BHARTI BT INTERNET LTD.
9583 1116 82 435 Sify Limited
18566 1041 296 10 Covad Communications
7011 1035 301 597 Citizens Utilities
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1215 1196 Cable One
9498 1149 1088 BHARTI BT INTERNET LTD.
18566 1041 1031 Covad Communications
4323 1386 1020 Time Warner Telecom
8151 1161 949 UniNet S.A. de C.V.
17488 961 874 Hathway IP Over Cable Interne
6478 909 805 AT&T Worldnet Services
22773 845 787 Cox Communications, Inc.
19262 878 728 Verizon Global Networks
9583 1116 681 Sify Limited
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15190 UNALLOCATED 63.98.176.0/24 701 UUNET Technologies,
18506 UNALLOCATED 63.107.123.0/24 33286 Turlock Irrigation D
14699 UNALLOCATED 63.238.252.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 63.238.253.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 64.85.144.0/22 30517 Great Lakes Comnet,
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
14699 UNALLOCATED 65.112.79.0/24 30517 Great Lakes Comnet,
21624 UNALLOCATED 65.163.176.0/24 701 UUNET Technologies,
14699 UNALLOCATED 72.35.42.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 72.35.43.0/24 30517 Great Lakes Comnet,
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.48.10.0/23 19548 Adelphia Business Solutions
24.48.12.0/22 19548 Adelphia Business Solutions
24.48.80.0/21 19548 Adelphia Business Solutions
24.49.32.0/22 19548 Adelphia Business Solutions
24.54.224.0/19 19548 Adelphia Business Solutions
24.142.40.0/21 7018 AT&T WorldNet Services
24.142.160.0/19 7018 AT&T WorldNet Services
24.246.0.0/17 7018 AT&T WorldNet Services
24.246.128.0/18 7018 AT&T WorldNet Services
60.253.0.0/18 27572 Connexion by Boeing
Complete listing at http://thyme.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:9 /10:15 /11:39 /12:137
/13:277 /14:491 /15:980 /16:9744 /17:4214 /18:7029
/19:14974 /20:17141 /21:16155 /22:20410 /23:21460 /24:127485
/25:870 /26:1097 /27:563 /28:96 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1204 1215 Cable One
2386 1053 1353 AT&T Data Communications Serv
18566 1022 1041 Covad Communications
9583 963 1116 Sify Limited
4755 919 1558 Videsh Sanchar Nigam Ltd. Aut
7011 919 1035 Citizens Utilities
6478 908 909 AT&T Worldnet Services
9498 822 1149 BHARTI BT INTERNET LTD.
23577 809 818 Korea Telecom (ATM-MPLS)
7018 781 1429 AT&T WorldNet Services
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:98 12:1954 13:2 15:21 16:3
17:6 18:13 20:35 22:1 24:1020 25:1
31:1 32:61 33:4 38:382 40:65 41:440
44:2 47:8 52:3 55:3 56:3 57:22
58:509 59:415 60:407 61:983 62:956 63:1976
64:3361 65:2359 66:3629 67:1096 68:636 69:2081
70:474 71:107 72:1492 73:7 74:812 75:170
76:206 77:533 78:409 79:74 80:868 81:767
82:572 83:349 84:394 85:1016 86:385 87:643
88:311 89:1100 90:42 91:983 92:111 93:54
95:1 96:10 97:9 98:38 99:1 114:1
115:1 116:500 117:245 118:68 119:110 121:425
122:667 123:289 124:780 125:1111 128:308 129:199
130:133 131:389 132:68 133:9 134:188 135:37
136:215 137:86 138:156 139:63 140:496 141:107
142:378 143:263 144:284 145:51 146:336 147:132
148:484 149:177 150:121 151:139 152:95 153:130
154:11 155:286 156:198 157:250 158:163 159:215
160:221 161:102 162:199 163:188 164:558 165:419
166:295 167:309 168:568 169:131 170:432 171:28
172:3 173:1 189:149 190:1360 192:5762 193:4096
194:3232 195:2316 196:904 198:3781 199:3199 200:5429
201:1272 202:7448 203:7785 204:3964 205:2067 206:2415
207:2731 208:3137 209:3619 210:2525 211:1021 212:1253
213:1513 214:438 215:40 216:4129 217:1117 218:338
219:401 220:1008 221:409 222:306
End of report
