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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 29 Jan, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 244020
Prefixes after maximum aggregation: 124685
Deaggregation factor: 1.96
Unique aggregates announced to Internet: 119364
Total ASes present in the Internet Routing Table: 27206
Prefixes per ASN: 8.97
Origin-only ASes present in the Internet Routing Table: 23729
Origin ASes announcing only one prefix: 11520
Transit ASes present in the Internet Routing Table: 3477
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: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 867
Number of addresses announced to Internet: 1822424608
Equivalent to 108 /8s, 159 /16s and 254 /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: 69.8
Total number of prefixes smaller than registry allocations: 114993
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56029
Total APNIC prefixes after maximum aggregation: 21112
APNIC Deaggregation factor: 2.65
Prefixes being announced from the APNIC address blocks: 53497
Unique aggregates announced from the APNIC address blocks: 23891
APNIC Region origin ASes present in the Internet Routing Table: 3112
APNIC Prefixes per ASN: 17.19
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: 326795424
Equivalent to 19 /8s, 122 /16s and 128 /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, 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: 114988
Total ARIN prefixes after maximum aggregation: 65360
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83654
Unique aggregates announced from the ARIN address blocks: 33290
ARIN Region origin ASes present in the Internet Routing Table: 12096
ARIN Prefixes per ASN: 6.92
ARIN Region origin ASes announcing only one prefix: 4667
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: 355676800
Equivalent to 21 /8s, 51 /16s and 50 /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: 51239
Total RIPE prefixes after maximum aggregation: 32450
RIPE Deaggregation factor: 1.58
Prefixes being announced from the RIPE address blocks: 46528
Unique aggregates announced from the RIPE address blocks: 31297
RIPE Region origin ASes present in the Internet Routing Table: 10812
RIPE Prefixes per ASN: 4.30
RIPE Region origin ASes announcing only one prefix: 5679
RIPE Region transit ASes present in the Internet Routing Table: 1647
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 339012608
Equivalent to 20 /8s, 52 /16s and 236 /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: 18382
Total LACNIC prefixes after maximum aggregation: 4634
LACNIC Deaggregation factor: 3.97
Prefixes being announced from the LACNIC address blocks: 16768
Unique aggregates announced from the LACNIC address blocks: 9155
LACNIC Region origin ASes present in the Internet Routing Table: 895
LACNIC Prefixes per ASN: 18.74
LACNIC Region origin ASes announcing only one prefix: 291
LACNIC Region transit ASes present in the Internet Routing Table: 148
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 47653376
Equivalent to 2 /8s, 215 /16s and 34 /24s
Percentage of available LACNIC address space announced: 47.3
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: 3365
Total AfriNIC prefixes after maximum aggregation: 1109
AfriNIC Deaggregation factor: 3.03
Prefixes being announced from the AfriNIC address blocks: 3714
Unique aggregates announced from the AfriNIC address blocks: 1748
AfriNIC Region origin ASes present in the Internet Routing Table: 222
AfriNIC Prefixes per ASN: 16.73
AfriNIC Region origin ASes announcing only one prefix: 70
AfriNIC Region transit ASes present in the Internet Routing Table: 39
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 9536256
Equivalent to 0 /8s, 145 /16s and 131 /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 1553 384 75 Videsh Sanchar Nigam Ltd. Aut
9583 1125 83 442 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 818 34 697 Korea Telecom (ATM-MPLS)
18101 610 128 65 Reliance Infocom Ltd Internet
4780 595 309 46 Digital United Inc.
9829 593 449 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 1034 739 511 BellSouth Network Solutions,
7011 1032 301 594 Citizens Utilities
174 970 6833 812 Cogent Communications
701 895 6560 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 359 TDC Tele Danmark
3301 330 1458 301 TeliaNet Sweden
3320 319 6019 265 Deutsche Telekom AG
8452 295 188 7 TEDATA
8866 281 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 276 2046 256 DFN-IP service G-WiN
3215 270 2583 92 France Telecom Transpac
6746 270 128 248 Dynamic Network Technologies,
8708 270 420 240 Romania Data Systems S.A.
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 1150 2390 218 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 395 115 62 Servicios Alestra S.A de C.V
6471 394 85 39 ENTEL CHILE S.A.
10620 351 92 29 TVCABLE BOGOTA
14117 351 23 16 Telefonica del Sur S.A.
22047 318 254 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 1553 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 1150 2390 218 UniNet S.A. de C.V.
9583 1125 83 442 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 1150 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 1125 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 /15:975 /16:9753 /17:4214 /18:6960
/19:14935 /20:17133 /21:16278 /22:20458 /23:21608 /24:128057
/25:882 /26:1101 /27:560 /28:104 /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 970 1125 Sify Limited
7011 916 1032 Citizens Utilities
4755 913 1553 Videsh Sanchar Nigam Ltd. Aut
23577 809 818 Korea Telecom (ATM-MPLS)
7018 799 1460 AT&T WorldNet Services
9498 783 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 38:384 40:65 41:457
44:2 47:8 52:3 55:3 56:3 57:22
58:510 59:420 60:408 61:983 62:1055 63:1972
64:3362 65:2365 66:3628 67:1057 68:636 69:2092
70:470 71:102 72:1480 73:7 74:800 75:171
76:187 77:479 78:461 79:70 80:881 81:793
82:576 83:350 84:523 85:946 86:375 87:611
88:307 89:1109 90:43 91:950 92:81 93:54
96:2 97:7 98:37 114:1 115:1 116:503
117:246 118:64 119:101 121:410 122:664 123:267
124:781 125:1077 128:310 129:197 130:134 131:393
132:68 133:9 134:188 135:36 136:216 137:85
138:156 139:81 140:496 141:106 142:378 143:269
144:322 145:51 146:337 147:130 148:485 149:180
150:118 151:139 152:95 153:130 154:11 155:284
156:198 157:250 158:164 159:215 160:214 161:96
162:199 163:185 164:560 165:416 166:293 167:308
168:565 169:131 170:432 171:28 172:3 173:1
189:144 190:1318 192:5760 193:4085 194:3240 195:2320
196:969 198:3789 199:3200 200:5419 201:1272 202:7529
203:7935 204:3965 205:2075 206:2431 207:2732 208:3123
209:3633 210:2634 211:1023 212:1290 213:1591 214:445
215:47 216:4122 217:1209 218:335 219:398 220:1007
221:413 222:300
End of report
