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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 16 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249000
Prefixes after maximum aggregation: 125411
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 120955
Total ASes present in the Internet Routing Table: 27636
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 24087
Origin ASes announcing only one prefix: 11674
Transit ASes present in the Internet Routing Table: 3549
Transit-only ASes present in the Internet Routing Table: 79
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: 48
Unregistered ASNs in the Routing Table: 19
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: 860
Number of addresses announced to Internet: 1844638720
Equivalent to 109 /8s, 242 /16s and 244 /24s
Percentage of available address space announced: 49.8
Percentage of allocated address space announced: 61.1
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: 118222
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56637
Total APNIC prefixes after maximum aggregation: 20885
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54217
Unique aggregates announced from the APNIC address blocks: 23199
APNIC Region origin ASes present in the Internet Routing Table: 3160
APNIC Prefixes per ASN: 17.16
APNIC Region origin ASes announcing only one prefix: 846
APNIC Region transit ASes present in the Internet Routing Table: 487
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 335594336
Equivalent to 20 /8s, 0 /16s and 195 /24s
Percentage of available APNIC address space announced: 76.9
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: 116396
Total ARIN prefixes after maximum aggregation: 65553
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 85056
Unique aggregates announced from the ARIN address blocks: 33604
ARIN Region origin ASes present in the Internet Routing Table: 12216
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4700
ARIN Region transit ASes present in the Internet Routing Table: 1146
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 358858624
Equivalent to 21 /8s, 99 /16s and 191 /24s
Percentage of available ARIN address space announced: 73.8
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: 53207
Total RIPE prefixes after maximum aggregation: 33072
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48329
Unique aggregates announced from the RIPE address blocks: 32530
RIPE Region origin ASes present in the Internet Routing Table: 11038
RIPE Prefixes per ASN: 4.38
RIPE Region origin ASes announcing only one prefix: 5751
RIPE Region transit ASes present in the Internet Routing Table: 1685
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347558432
Equivalent to 20 /8s, 183 /16s and 82 /24s
Percentage of available RIPE address space announced: 79.7
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: 19133
Total LACNIC prefixes after maximum aggregation: 4762
LACNIC Deaggregation factor: 4.02
Prefixes being announced from the LACNIC address blocks: 17463
Unique aggregates announced from the LACNIC address blocks: 9494
LACNIC Region origin ASes present in the Internet Routing Table: 912
LACNIC Prefixes per ASN: 19.15
LACNIC Region origin ASes announcing only one prefix: 299
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49716480
Equivalent to 2 /8s, 246 /16s and 157 /24s
Percentage of available LACNIC address space announced: 49.4
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: 3577
Total AfriNIC prefixes after maximum aggregation: 1123
AfriNIC Deaggregation factor: 3.19
Prefixes being announced from the AfriNIC address blocks: 3996
Unique aggregates announced from the AfriNIC address blocks: 1802
AfriNIC Region origin ASes present in the Internet Routing Table: 230
AfriNIC Prefixes per ASN: 17.37
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: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10125312
Equivalent to 0 /8s, 154 /16s and 128 /24s
Percentage of available AfriNIC address space announced: 30.2
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 1538 381 126 Videsh Sanchar Nigam Ltd. Aut
9498 1155 550 67 BHARTI BT INTERNET LTD.
9583 1149 109 26 Sify Limited
17488 1024 66 79 Hathway IP Over Cable Interne
4134 856 12473 317 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
23577 817 34 699 Korea Telecom (ATM-MPLS)
18101 674 126 53 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 1430 5929 1005 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1386 654 844 AT&T Data Communications Serv
11492 1215 146 23 Cable One
7011 1063 309 607 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 988 727 476 BellSouth Network Solutions,
1785 977 479 103 AppliedTheory Corporation
174 962 6835 813 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 384 188 7 TEDATA
3301 345 1443 311 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
3215 276 2639 90 France Telecom Transpac
5462 275 666 26 Telewest Broadband
8708 274 421 244 Romania Data Systems S.A.
680 272 2046 258 DFN-IP service G-WiN
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 1188 2449 219 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 450 220 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 405 116 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.
22047 322 270 14 VTR PUNTO NET S.A.
20299 313 35 31 NEWCOM AMERICAS
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 290 869 223 The Internet Solution
2018 250 276 119 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 1538 381 126 Videsh Sanchar Nigam Ltd. Aut
7018 1430 5929 1005 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1386 654 844 AT&T Data Communications Serv
11492 1215 146 23 Cable One
8151 1188 2449 219 UniNet S.A. de C.V.
9498 1155 550 67 BHARTI BT INTERNET LTD.
9583 1149 109 26 Sify Limited
7011 1063 309 607 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 1215 1192 Cable One
9583 1149 1123 Sify Limited
9498 1155 1088 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1392 1026 Time Warner Telecom
8151 1188 969 UniNet S.A. de C.V.
17488 1024 945 Hathway IP Over Cable Interne
1785 977 874 AppliedTheory Corporation
22773 890 827 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.
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
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /12:139
/13:278 /14:499 /15:991 /16:9778 /17:4274 /18:7236
/19:15184 /20:17432 /21:16627 /22:21108 /23:22201 /24:130817
/25:766 /26:978 /27:481 /28:110 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1201 1215 Cable One
2386 1087 1386 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 986 1149 Sify Limited
7011 947 1063 Citizens Utilities
6478 931 932 AT&T Worldnet Services
4755 912 1538 Videsh Sanchar Nigam Ltd. Aut
17488 839 1024 Hathway IP Over Cable Interne
9498 821 1155 BHARTI BT INTERNET LTD.
23577 808 817 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 12:1993 13:2 15:21
16:3 17:6 18:13 20:35 24:1044 25:1
32:61 33:4 38:401 40:95 41:630 44:2
46:5 47:8 52:3 55:3 56:3 57:22
58:514 59:417 60:418 61:982 62:1115 63:1968
64:3348 65:2362 66:3613 67:1042 68:647 69:2102
70:513 71:126 72:1494 73:6 74:880 75:236
76:272 77:600 78:526 79:99 80:881 81:843
82:605 83:365 84:543 85:951 86:391 87:633
88:305 89:1199 90:11 91:1095 92:226 93:135
96:18 97:15 98:95 99:2 116:566 117:274
118:82 119:236 121:461 122:712 123:294 124:803
125:1123 128:322 129:201 130:129 131:401 132:69
133:9 134:188 135:32 136:221 137:119 138:154
139:65 140:483 141:109 142:378 143:279 144:340
145:53 146:335 147:132 148:494 149:179 150:121
151:155 152:142 153:133 154:11 155:266 156:207
157:253 158:165 159:219 160:252 161:100 162:205
163:194 164:562 165:431 166:296 167:313 168:592
169:130 170:426 171:29 172:3 189:153 190:1492
192:5768 193:4103 194:3263 195:2358 196:1061 198:3778
199:3219 200:5517 201:1319 202:7575 203:7801 204:4008
205:2092 206:2421 207:2770 208:3216 209:3490 210:2531
211:1025 212:1303 213:1599 214:446 215:48 216:4208
217:1232 218:338 219:392 220:1070 221:403 222:312
End of report
