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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 12 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 248169
Prefixes after maximum aggregation: 125269
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120706
Total ASes present in the Internet Routing Table: 27596
Prefixes per ASN: 8.99
Origin-only ASes present in the Internet Routing Table: 24045
Origin ASes announcing only one prefix: 11658
Transit ASes present in the Internet Routing Table: 3551
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: 42
Unregistered ASNs in the Routing Table: 16
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: 881
Number of addresses announced to Internet: 1841686240
Equivalent to 109 /8s, 197 /16s and 230 /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: 117633
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56395
Total APNIC prefixes after maximum aggregation: 20964
APNIC Deaggregation factor: 2.69
Prefixes being announced from the APNIC address blocks: 53990
Unique aggregates announced from the APNIC address blocks: 23311
APNIC Region origin ASes present in the Internet Routing Table: 3162
APNIC Prefixes per ASN: 17.07
APNIC Region origin ASes announcing only one prefix: 846
APNIC Region transit ASes present in the Internet Routing Table: 488
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 335094624
Equivalent to 19 /8s, 249 /16s and 35 /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: 116237
Total ARIN prefixes after maximum aggregation: 65435
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 84927
Unique aggregates announced from the ARIN address blocks: 33584
ARIN Region origin ASes present in the Internet Routing Table: 12195
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4683
ARIN Region transit ASes present in the Internet Routing Table: 1150
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356984960
Equivalent to 21 /8s, 71 /16s and 40 /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: 52882
Total RIPE prefixes after maximum aggregation: 32977
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47994
Unique aggregates announced from the RIPE address blocks: 32351
RIPE Region origin ASes present in the Internet Routing Table: 11018
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5749
RIPE Region transit ASes present in the Internet Routing Table: 1680
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347269120
Equivalent to 20 /8s, 178 /16s and 232 /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: 19038
Total LACNIC prefixes after maximum aggregation: 4751
LACNIC Deaggregation factor: 4.01
Prefixes being announced from the LACNIC address blocks: 17390
Unique aggregates announced from the LACNIC address blocks: 9415
LACNIC Region origin ASes present in the Internet Routing Table: 911
LACNIC Prefixes per ASN: 19.09
LACNIC Region origin ASes announcing only one prefix: 302
LACNIC Region transit ASes present in the Internet Routing Table: 156
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49242112
Equivalent to 2 /8s, 239 /16s and 96 /24s
Percentage of available LACNIC address space announced: 48.9
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: 3573
Total AfriNIC prefixes after maximum aggregation: 1126
AfriNIC Deaggregation factor: 3.17
Prefixes being announced from the AfriNIC address blocks: 3987
Unique aggregates announced from the AfriNIC address blocks: 1799
AfriNIC Region origin ASes present in the Internet Routing Table: 231
AfriNIC Prefixes per ASN: 17.26
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 42
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10042624
Equivalent to 0 /8s, 153 /16s and 61 /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 1545 381 126 Videsh Sanchar Nigam Ltd. Aut
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1147 102 126 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 815 34 697 Korea Telecom (ATM-MPLS)
18101 678 127 57 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 1420 5929 996 AT&T WorldNet Services
4323 1389 1012 366 Time Warner Telecom
2386 1383 638 843 AT&T Data Communications Serv
11492 1212 146 27 Cable One
7011 1063 309 609 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 991 728 477 BellSouth Network Solutions,
1785 975 479 107 AppliedTheory Corporation
174 968 6835 817 Cogent Communications
6478 931 237 110 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 388 188 7 TEDATA
3301 339 1443 308 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 276 2046 256 DFN-IP service G-WiN
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 453 220 61 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 326 120 10 Prima S.A.
22047 323 270 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 451 60 27 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 129 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 1545 381 126 Videsh Sanchar Nigam Ltd. Aut
7018 1420 5929 996 AT&T WorldNet Services
4323 1389 1012 366 Time Warner Telecom
2386 1383 638 843 AT&T Data Communications Serv
11492 1212 146 27 Cable One
8151 1191 2449 221 UniNet S.A. de C.V.
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1147 102 126 Sify Limited
7011 1063 309 609 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 1212 1185 Cable One
9498 1156 1090 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1389 1023 Time Warner Telecom
9583 1147 1021 Sify Limited
8151 1191 970 UniNet S.A. de C.V.
17488 1017 935 Hathway IP Over Cable Interne
1785 975 868 AppliedTheory Corporation
22773 890 825 Cox Communications, Inc.
6478 931 821 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
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
64601 PRIVATE 118.232.77.0/24 9924 Taiwan Fixed Network
64601 PRIVATE 118.232.78.0/24 9924 Taiwan Fixed Network
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 /16:9774 /17:4257 /18:7195
/19:15188 /20:17415 /21:16579 /22:21026 /23:22105 /24:130278
/25:769 /26:982 /27:488 /28:109 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1212 Cable One
2386 1087 1383 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 985 1147 Sify Limited
7011 946 1063 Citizens Utilities
6478 930 931 AT&T Worldnet Services
4755 919 1545 Videsh Sanchar Nigam Ltd. Aut
17488 832 1017 Hathway IP Over Cable Interne
9498 819 1156 BHARTI BT INTERNET LTD.
23577 806 815 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 38:400 40:65 41:623 44:2
47:8 52:3 55:3 56:3 57:22 58:511
59:421 60:418 61:974 62:1119 63:1967 64:3344
65:2362 66:3621 67:1029 68:639 69:2103 70:505
71:125 72:1487 73:6 74:875 75:235 76:273
77:589 78:520 79:97 80:872 81:814 82:606
83:356 84:542 85:948 86:390 87:636 88:293
89:1165 90:11 91:1087 92:194 93:135 96:17
97:14 98:93 99:3 116:556 117:269 118:81
119:168 121:454 122:716 123:310 124:803 125:1118
128:322 129:200 130:125 131:398 132:69 133:9
134:190 135:32 136:222 137:118 138:154 139:64
140:490 141:109 142:381 143:271 144:342 145:53
146:335 147:132 148:497 149:179 150:121 151:155
152:144 153:131 154:11 155:266 156:207 157:252
158:165 159:219 160:251 161:99 162:204 163:193
164:565 165:428 166:296 167:311 168:590 169:130
170:426 171:29 172:3 189:156 190:1471 192:5767
193:4099 194:3258 195:2349 196:1069 198:3779 199:3217
200:5485 201:1303 202:7576 203:7745 204:4000 205:2096
206:2403 207:2754 208:3218 209:3477 210:2527 211:1027
212:1307 213:1597 214:448 215:48 216:4183 217:1222
218:341 219:389 220:1077 221:400 222:311
End of report
