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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 13 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 248468
Prefixes after maximum aggregation: 125366
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120847
Total ASes present in the Internet Routing Table: 27597
Prefixes per ASN: 9.00
Origin-only ASes present in the Internet Routing Table: 24052
Origin ASes announcing only one prefix: 11651
Transit ASes present in the Internet Routing Table: 3545
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 50
Unregistered ASNs in the Routing Table: 22
Number of 32-bit ASNs allocated by the RIRs: 46
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: 888
Number of addresses announced to Internet: 1841960928
Equivalent to 109 /8s, 202 /16s and 23 /24s
Percentage of available address space announced: 49.7
Percentage of allocated address space announced: 61.0
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 70.8
Total number of prefixes smaller than registry allocations: 117855
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56504
Total APNIC prefixes after maximum aggregation: 20989
APNIC Deaggregation factor: 2.69
Prefixes being announced from the APNIC address blocks: 54083
Unique aggregates announced from the APNIC address blocks: 23399
APNIC Region origin ASes present in the Internet Routing Table: 3163
APNIC Prefixes per ASN: 17.10
APNIC Region origin ASes announcing only one prefix: 843
APNIC Region transit ASes present in the Internet Routing Table: 485
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 335159136
Equivalent to 19 /8s, 250 /16s and 31 /24s
Percentage of available APNIC address space announced: 76.8
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: 116216
Total ARIN prefixes after maximum aggregation: 65444
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 84920
Unique aggregates announced from the ARIN address blocks: 33560
ARIN Region origin ASes present in the Internet Routing Table: 12192
ARIN Prefixes per ASN: 6.97
ARIN Region origin ASes announcing only one prefix: 4686
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: 357024896
Equivalent to 21 /8s, 71 /16s and 196 /24s
Percentage of available ARIN address space announced: 73.4
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, 173/8, 174/8,
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: 53023
Total RIPE prefixes after maximum aggregation: 33036
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48139
Unique aggregates announced from the RIPE address blocks: 32410
RIPE Region origin ASes present in the Internet Routing Table: 11021
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5745
RIPE Region transit ASes present in the Internet Routing Table: 1683
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 347332864
Equivalent to 20 /8s, 179 /16s and 225 /24s
Percentage of available RIPE address space announced: 79.6
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: 19086
Total LACNIC prefixes after maximum aggregation: 4752
LACNIC Deaggregation factor: 4.02
Prefixes being announced from the LACNIC address blocks: 17442
Unique aggregates announced from the LACNIC address blocks: 9427
LACNIC Region origin ASes present in the Internet Routing Table: 912
LACNIC Prefixes per ASN: 19.12
LACNIC Region origin ASes announcing only one prefix: 301
LACNIC Region transit ASes present in the Internet Routing Table: 155
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49404416
Equivalent to 2 /8s, 241 /16s and 218 /24s
Percentage of available LACNIC address space announced: 49.1
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: 3587
Total AfriNIC prefixes after maximum aggregation: 1129
AfriNIC Deaggregation factor: 3.18
Prefixes being announced from the AfriNIC address blocks: 3988
Unique aggregates announced from the AfriNIC address blocks: 1798
AfriNIC Region origin ASes present in the Internet Routing Table: 230
AfriNIC Prefixes per ASN: 17.34
AfriNIC Region origin ASes announcing only one prefix: 76
AfriNIC Region transit ASes present in the Internet Routing Table: 42
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10041600
Equivalent to 0 /8s, 153 /16s and 57 /24s
Percentage of available AfriNIC address space announced: 29.9
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 1546 381 126 Videsh Sanchar Nigam Ltd. Aut
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1147 103 127 Sify Limited
17488 1017 65 82 Hathway IP Over Cable Interne
4134 854 12409 315 CHINANET-BACKBONE
4766 846 6005 340 Korea Telecom (KIX)
23577 814 34 696 Korea Telecom (ATM-MPLS)
18101 677 127 56 Reliance Infocom Ltd Internet
9829 595 449 11 BSNL National Internet Backbo
4812 560 951 90 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 1424 5944 1000 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1384 638 844 AT&T Data Communications Serv
11492 1213 146 27 Cable One
7011 1067 311 609 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 991 728 477 BellSouth Network Solutions,
1785 977 479 107 AppliedTheory Corporation
174 961 6835 812 Cogent Communications
6478 932 238 111 AT&T Worldnet Services
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 398 1778 363 TDC Tele Danmark
8452 382 188 7 TEDATA
3301 340 1443 308 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
680 279 2046 258 DFN-IP service G-WiN
8551 279 267 42 Bezeq International
5462 275 666 26 Telewest Broadband
8708 275 421 245 Romania Data Systems S.A.
3215 274 2631 96 France Telecom Transpac
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 1191 2449 221 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 452 220 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 404 116 68 Servicios Alestra S.A de C.V
6471 397 85 40 ENTEL CHILE S.A.
10620 372 98 47 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
10481 334 152 10 Prima S.A.
22047 322 270 14 VTR PUNTO NET 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 448 60 28 LINKdotNET AS number
3741 288 869 224 The Internet Solution
2018 252 276 118 Tertiary Education Network
20858 217 34 4 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 130 9 16 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
24835 90 48 7 RAYA Telecom - Egypt
29571 80 13 7 Ci Telecom Autonomous system
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 1546 381 126 Videsh Sanchar Nigam Ltd. Aut
7018 1424 5944 1000 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1384 638 844 AT&T Data Communications Serv
11492 1213 146 27 Cable One
8151 1191 2449 221 UniNet S.A. de C.V.
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1147 103 127 Sify Limited
7011 1067 311 609 Citizens Utilities
18566 1043 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 1213 1186 Cable One
9498 1155 1089 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1392 1026 Time Warner Telecom
9583 1147 1020 Sify Limited
8151 1191 970 UniNet S.A. de C.V.
17488 1017 935 Hathway IP Over Cable Interne
1785 977 870 AppliedTheory Corporation
22773 889 824 Cox Communications, Inc.
6478 932 821 AT&T Worldnet Services
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
18506 UNALLOCATED 63.107.123.0/24 33286 Turlock Irrigation D
16886 UNALLOCATED 63.109.3.0/24 1239 Sprint
16886 UNALLOCATED 63.167.139.0/24 1239 Sprint
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
65382 PRIVATE 72.158.126.0/24 6381 bellsouth.net, inc.
65383 PRIVATE 72.158.127.0/24 6381 bellsouth.net, inc.
65011 PRIVATE 74.43.150.0/24 7011 Citizens Utilities
65000 PRIVATE 78.108.160.0/24 39010 TerraNet sal
65000 PRIVATE 92.62.240.0/20 24750 Cable Internet Syste
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 20001 HoldCo LLC - Road Runner
24.75.192.0/18 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
41.207.64.0/24 36915 Africa Online Kenya
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 /10:16 /11:39 /12:138
/13:278 /14:496 /15:991 /16:9766 /17:4258 /18:7212
/19:15204 /20:17431 /21:16595 /22:21043 /23:22081 /24:130527
/25:769 /26:984 /27:490 /28:104 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1199 1213 Cable One
2386 1088 1384 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 985 1147 Sify Limited
7011 949 1067 Citizens Utilities
6478 931 932 AT&T Worldnet Services
4755 920 1546 Videsh Sanchar Nigam Ltd. Aut
17488 832 1017 Hathway IP Over Cable Interne
9498 817 1155 BHARTI BT INTERNET LTD.
23577 805 814 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:100 11:1 12:1995 13:2 15:21
16:3 17:6 18:13 20:35 24:1040 25:1
32:61 33:4 38:403 40:65 41:623 44:2
47:8 52:3 55:3 56:3 57:22 58:513
59:420 60:418 61:983 62:1117 63:1968 64:3343
65:2360 66:3617 67:1030 68:645 69:2104 70:512
71:126 72:1496 73:6 74:881 75:235 76:274
77:596 78:520 79:98 80:879 81:843 82:607
83:371 84:542 85:951 86:390 87:633 88:300
89:1198 90:11 91:1092 92:207 93:135 96:17
97:15 98:94 99:2 116:557 117:272 118:86
119:235 121:458 122:716 123:294 124:803 125:1119
128:322 129:201 130:125 131:396 132:68 133:9
134:188 135:32 136:223 137:119 138:154 139:65
140:489 141:109 142:381 143:271 144:343 145:53
146:334 147:132 148:496 149:179 150:121 151:155
152:142 153:133 154:11 155:267 156:207 157:253
158:165 159:219 160:251 161:100 162:204 163:193
164:566 165:427 166:296 167:311 168:590 169:130
170:426 171:29 172:3 189:157 190:1482 192:5765
193:4102 194:3262 195:2350 196:1074 198:3782 199:3220
200:5497 201:1304 202:7576 203:7741 204:3990 205:2092
206:2400 207:2755 208:3214 209:3477 210:2533 211:1027
212:1294 213:1603 214:443 215:48 216:4200 217:1221
218:341 219:389 220:1077 221:400 222:311
End of report
