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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 28 Jan, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 243836
Prefixes after maximum aggregation: 124527
Deaggregation factor: 1.96
Unique aggregates announced to Internet: 119279
Total ASes present in the Internet Routing Table: 27190
Prefixes per ASN: 8.97
Origin-only ASes present in the Internet Routing Table: 23702
Origin ASes announcing only one prefix: 11514
Transit ASes present in the Internet Routing Table: 3488
Transit-only ASes present in the Internet Routing Table: 68
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 23
Unregistered ASNs in the Routing Table: 13
Number of 32-bit ASNs allocated by the RIRs: 44
Prefixes from 32-bit ASNs in the Routing Table: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 865
Number of addresses announced to Internet: 1822173152
Equivalent to 108 /8s, 156 /16s and 39 /24s
Percentage of available address space announced: 49.2
Percentage of allocated address space announced: 61.0
Percentage of available address space allocated: 80.5
Percentage of address space in use by end-sites: 69.8
Total number of prefixes smaller than registry allocations: 114926
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55954
Total APNIC prefixes after maximum aggregation: 21083
APNIC Deaggregation factor: 2.65
Prefixes being announced from the APNIC address blocks: 53422
Unique aggregates announced from the APNIC address blocks: 23918
APNIC Region origin ASes present in the Internet Routing Table: 3109
APNIC Prefixes per ASN: 17.18
APNIC Region origin ASes announcing only one prefix: 813
APNIC Region transit ASes present in the Internet Routing Table: 463
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 326691232
Equivalent to 19 /8s, 120 /16s and 233 /24s
Percentage of available APNIC address space announced: 74.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
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: 114890
Total ARIN prefixes after maximum aggregation: 65305
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83634
Unique aggregates announced from the ARIN address blocks: 33279
ARIN Region origin ASes present in the Internet Routing Table: 12089
ARIN Prefixes per ASN: 6.92
ARIN Region origin ASes announcing only one prefix: 4660
ARIN Region transit ASes present in the Internet Routing Table: 1147
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 355708288
Equivalent to 21 /8s, 51 /16s and 173 /24s
Percentage of available ARIN address space announced: 78.5
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: 51237
Total RIPE prefixes after maximum aggregation: 32399
RIPE Deaggregation factor: 1.58
Prefixes being announced from the RIPE address blocks: 46540
Unique aggregates announced from the RIPE address blocks: 31227
RIPE Region origin ASes present in the Internet Routing Table: 10810
RIPE Prefixes per ASN: 4.31
RIPE Region origin ASes announcing only one prefix: 5683
RIPE Region transit ASes present in the Internet Routing Table: 1652
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 339020288
Equivalent to 20 /8s, 53 /16s and 10 /24s
Percentage of available RIPE address space announced: 77.7
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: 18364
Total LACNIC prefixes after maximum aggregation: 4620
LACNIC Deaggregation factor: 3.97
Prefixes being announced from the LACNIC address blocks: 16751
Unique aggregates announced from the LACNIC address blocks: 9161
LACNIC Region origin ASes present in the Internet Routing Table: 892
LACNIC Prefixes per ASN: 18.78
LACNIC Region origin ASes announcing only one prefix: 289
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: 15
Number of LACNIC addresses announced to Internet: 47706368
Equivalent to 2 /8s, 215 /16s and 241 /24s
Percentage of available LACNIC address space announced: 47.4
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: 3375
Total AfriNIC prefixes after maximum aggregation: 1102
AfriNIC Deaggregation factor: 3.06
Prefixes being announced from the AfriNIC address blocks: 3722
Unique aggregates announced from the AfriNIC address blocks: 1741
AfriNIC Region origin ASes present in the Internet Routing Table: 221
AfriNIC Prefixes per ASN: 16.84
AfriNIC Region origin ASes announcing only one prefix: 69
AfriNIC Region transit ASes present in the Internet Routing Table: 39
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 9533696
Equivalent to 0 /8s, 145 /16s and 121 /24s
Percentage of available AfriNIC address space announced: 28.4
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 1551 384 75 Videsh Sanchar Nigam Ltd. Aut
9583 1122 83 439 Sify Limited
9498 1111 549 61 BHARTI BT INTERNET LTD.
17488 961 62 87 Hathway IP Over Cable Interne
4134 863 11761 311 CHINANET-BACKBONE
4766 841 5494 340 Korea Telecom (KIX)
23577 816 34 695 Korea Telecom (ATM-MPLS)
18101 610 128 65 Reliance Infocom Ltd Internet
4780 595 309 46 Digital United Inc.
9829 592 449 11 BSNL National Internet Backbo
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 1460 6074 988 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1346 633 826 AT&T Data Communications Serv
11492 1210 135 17 Cable One
6478 1101 331 121 AT&T Worldnet Services
18566 1041 296 10 Covad Communications
6197 1033 739 512 BellSouth Network Solutions,
7011 1032 301 594 Citizens Utilities
174 970 6833 812 Cogent Communications
701 891 6555 684 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 359 TDC Tele Danmark
3301 330 1458 301 TeliaNet Sweden
3320 319 6019 265 Deutsche Telekom AG
8452 294 188 7 TEDATA
8866 281 78 24 Bulgarian Telecommunication C
8551 278 267 42 Bezeq International
8708 272 420 240 Romania Data Systems S.A.
680 271 2046 256 DFN-IP service G-WiN
3215 270 2583 92 France Telecom Transpac
6746 270 128 248 Dynamic Network Technologies,
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 1148 2390 216 UniNet S.A. de C.V.
11830 547 299 9 Instituto Costarricense de El
7303 428 208 54 Telecom Argentina Stet-France
16814 427 27 10 NSS, S.A.
11172 396 115 62 Servicios Alestra S.A de C.V
6471 394 85 39 ENTEL CHILE S.A.
10620 352 92 26 TVCABLE BOGOTA
14117 351 23 16 Telefonica del Sur S.A.
22047 322 254 13 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
24863 408 60 30 LINKdotNET AS number
3741 279 869 225 The Internet Solution
20858 202 34 3 EgyNet
6713 145 135 11 Itissalat Al-MAGHRIB
2018 142 268 114 Tertiary Education Network
33783 129 9 15 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
15475 93 84 4 Nile Online
24835 88 48 6 RAYA Telecom - Egypt
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 1551 384 75 Videsh Sanchar Nigam Ltd. Aut
7018 1460 6074 988 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1346 633 826 AT&T Data Communications Serv
11492 1210 135 17 Cable One
8151 1148 2390 216 UniNet S.A. de C.V.
9583 1122 83 439 Sify Limited
9498 1111 549 61 BHARTI BT INTERNET LTD.
6478 1101 331 121 AT&T Worldnet Services
18566 1041 296 10 Covad Communications
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1210 1193 Cable One
9498 1111 1050 BHARTI BT INTERNET LTD.
18566 1041 1031 Covad Communications
4323 1386 1020 Time Warner Telecom
6478 1101 980 AT&T Worldnet Services
8151 1148 932 UniNet S.A. de C.V.
17488 961 874 Hathway IP Over Cable Interne
22773 845 787 Cox Communications, Inc.
19262 877 728 Verizon Global Networks
9583 1122 683 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
24.54.224.0/19 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
60.253.64.0/19 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
/13:275 /14:490 /15:974 /16:9750 /17:4219 /18:6959
/19:14931 /20:17119 /21:16263 /22:20455 /23:21577 /24:127950
/25:877 /26:1098 /27:560 /28:102 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1200 1210 Cable One
6478 1100 1101 AT&T Worldnet Services
2386 1048 1346 AT&T Data Communications Serv
18566 1022 1041 Covad Communications
9583 967 1122 Sify Limited
7011 916 1032 Citizens Utilities
4755 911 1551 Videsh Sanchar Nigam Ltd. Aut
23577 807 816 Korea Telecom (ATM-MPLS)
7018 799 1460 AT&T WorldNet Services
9498 782 1111 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:98 12:1953 13:2 15:21 16:3
17:6 18:14 20:35 22:1 24:1011 25:1
31:1 32:61 33:4 38:385 40:65 41:465
44:2 47:8 52:3 55:3 56:3 57:22
58:511 59:420 60:408 61:982 62:1059 63:1971
64:3363 65:2365 66:3628 67:1057 68:637 69:2093
70:470 71:102 72:1480 73:7 74:802 75:171
76:187 77:480 78:462 79:70 80:882 81:794
82:589 83:350 84:521 85:946 86:375 87:611
88:309 89:1102 90:44 91:950 92:81 93:54
96:2 97:7 98:37 114:1 115:1 116:494
117:247 118:62 119:101 121:408 122:663 123:267
124:780 125:1075 128:310 129:199 130:130 131:393
132:68 133:9 134:188 135:36 136:210 137:85
138:151 139:81 140:496 141:106 142:378 143:266
144:322 145:51 146:337 147:130 148:485 149:178
150:118 151:139 152:95 153:130 154:11 155:283
156:198 157:250 158:164 159:215 160:214 161:96
162:198 163:184 164:546 165:416 166:293 167:308
168:564 169:131 170:432 171:28 172:3 173:1
189:142 190:1317 192:5751 193:4084 194:3246 195:2312
196:969 198:3768 199:3200 200:5423 201:1267 202:7506
203:7922 204:3959 205:2072 206:2432 207:2732 208:3125
209:3637 210:2633 211:1023 212:1290 213:1592 214:444
215:47 216:4119 217:1207 218:335 219:398 220:1005
221:413 222:300
End of report
