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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 19 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249120
Prefixes after maximum aggregation: 125483
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 121054
Total ASes present in the Internet Routing Table: 27680
Prefixes per ASN: 9.00
Origin-only ASes present in the Internet Routing Table: 24138
Origin ASes announcing only one prefix: 11705
Transit ASes present in the Internet Routing Table: 3542
Transit-only ASes present in the Internet Routing Table: 76
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: 859
Number of addresses announced to Internet: 1845897984
Equivalent to 110 /8s, 6 /16s and 43 /24s
Percentage of available address space announced: 49.8
Percentage of allocated address space announced: 61.2
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: 118376
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56686
Total APNIC prefixes after maximum aggregation: 20892
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54246
Unique aggregates announced from the APNIC address blocks: 23188
APNIC Region origin ASes present in the Internet Routing Table: 3166
APNIC Prefixes per ASN: 17.13
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: 335744096
Equivalent to 20 /8s, 3 /16s and 12 /24s
Percentage of available APNIC address space announced: 77.0
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: 116483
Total ARIN prefixes after maximum aggregation: 65600
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 85132
Unique aggregates announced from the ARIN address blocks: 33661
ARIN Region origin ASes present in the Internet Routing Table: 12235
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4705
ARIN Region transit ASes present in the Internet Routing Table: 1141
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 359346560
Equivalent to 21 /8s, 107 /16s and 49 /24s
Percentage of available ARIN address space announced: 73.9
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: 53248
Total RIPE prefixes after maximum aggregation: 33090
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48381
Unique aggregates announced from the RIPE address blocks: 32583
RIPE Region origin ASes present in the Internet Routing Table: 11057
RIPE Prefixes per ASN: 4.38
RIPE Region origin ASes announcing only one prefix: 5772
RIPE Region transit ASes present in the Internet Routing Table: 1682
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347661088
Equivalent to 20 /8s, 184 /16s and 227 /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: 19063
Total LACNIC prefixes after maximum aggregation: 4760
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 17390
Unique aggregates announced from the LACNIC address blocks: 9501
LACNIC Region origin ASes present in the Internet Routing Table: 913
LACNIC Prefixes per ASN: 19.05
LACNIC Region origin ASes announcing only one prefix: 304
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49739008
Equivalent to 2 /8s, 246 /16s and 245 /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: 3590
Total AfriNIC prefixes after maximum aggregation: 1125
AfriNIC Deaggregation factor: 3.19
Prefixes being announced from the AfriNIC address blocks: 4014
Unique aggregates announced from the AfriNIC address blocks: 1792
AfriNIC Region origin ASes present in the Internet Routing Table: 232
AfriNIC Prefixes per ASN: 17.30
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 43
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10163200
Equivalent to 0 /8s, 155 /16s and 20 /24s
Percentage of available AfriNIC address space announced: 30.3
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 381 127 Videsh Sanchar Nigam Ltd. Aut
9583 1150 140 16 Sify Limited
9498 1114 550 66 BHARTI BT INTERNET LTD.
17488 1025 66 85 Hathway IP Over Cable Interne
4134 855 12471 316 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
23577 815 34 697 Korea Telecom (ATM-MPLS)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 594 449 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 1421 5990 1003 AT&T WorldNet Services
4323 1389 1012 365 Time Warner Telecom
2386 1387 656 846 AT&T Data Communications Serv
11492 1216 146 16 Cable One
7011 1068 311 608 Citizens Utilities
18566 1045 296 10 Covad Communications
1785 1007 479 107 AppliedTheory Corporation
6197 990 728 477 BellSouth Network Solutions,
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 395 1776 360 TDC Tele Danmark
8452 383 188 7 TEDATA
3301 343 1459 310 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
6746 262 127 240 Dynamic Network Technologies,
680 258 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 220 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 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 287 869 224 The Internet Solution
2018 250 276 119 Tertiary Education Network
20858 215 34 3 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 129 9 15 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
24835 89 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 1551 381 127 Videsh Sanchar Nigam Ltd. Aut
7018 1421 5990 1003 AT&T WorldNet Services
4323 1389 1012 365 Time Warner Telecom
2386 1387 656 846 AT&T Data Communications Serv
11492 1216 146 16 Cable One
8151 1188 2449 220 UniNet S.A. de C.V.
9583 1150 140 16 Sify Limited
9498 1114 550 66 BHARTI BT INTERNET LTD.
7011 1068 311 608 Citizens Utilities
18566 1045 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 1216 1200 Cable One
9583 1150 1134 Sify Limited
9498 1114 1048 BHARTI BT INTERNET LTD.
18566 1045 1035 Covad Communications
4323 1389 1024 Time Warner Telecom
8151 1188 968 UniNet S.A. de C.V.
17488 1025 940 Hathway IP Over Cable Interne
1785 1007 900 AppliedTheory Corporation
22773 893 830 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 63.107.123.0/24 701 UUNET Technologies,
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
24.54.224.0/19 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
41.222.232.0/22 29614 GHANA TELECOM ISP NETWORK
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
63.140.213.0/24 22555 Universal Talkware Corporatio
63.140.238.0/24 20471 Moncur Design
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 /14:500 /15:992 /16:9783 /17:4279 /18:7234
/19:15197 /20:17442 /21:16633 /22:21079 /23:22215 /24:130919
/25:762 /26:974 /27:485 /28:108 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1202 1216 Cable One
2386 1088 1387 AT&T Data Communications Serv
18566 1026 1045 Covad Communications
9583 986 1150 Sify Limited
7011 950 1068 Citizens Utilities
6478 931 932 AT&T Worldnet Services
4755 925 1551 Videsh Sanchar Nigam Ltd. Aut
17488 840 1025 Hathway IP Over Cable Interne
23577 806 815 Korea Telecom (ATM-MPLS)
7018 794 1421 AT&T WorldNet Services
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 12:1997 13:2 15:21
16:3 17:6 18:13 20:35 24:1040 25:1
32:60 33:4 38:402 40:95 41:625 44:2
47:8 52:3 55:3 56:3 57:22 58:510
59:419 60:416 61:976 62:1098 63:1967 64:3354
65:2359 66:3617 67:1056 68:645 69:2107 70:510
71:125 72:1522 73:6 74:880 75:236 76:274
77:614 78:526 79:115 80:883 81:847 82:610
83:365 84:547 85:941 86:390 87:634 88:306
89:1196 90:11 91:1110 92:228 93:135 96:18
97:16 98:95 99:2 116:563 117:278 118:84
119:337 121:472 122:717 123:289 124:803 125:1119
128:321 129:201 130:125 131:401 132:69 133:9
134:188 135:32 136:221 137:119 138:154 139:65
140:482 141:108 142:376 143:279 144:342 145:53
146:335 147:132 148:493 149:180 150:121 151:155
152:142 153:127 154:11 155:242 156:207 157:252
158:167 159:221 160:254 161:110 162:205 163:198
164:566 165:431 166:296 167:313 168:591 169:130
170:425 171:28 172:3 189:144 190:1508 192:5769
193:4104 194:3261 195:2365 196:1062 198:3774 199:3224
200:5490 201:1318 202:7519 203:7794 204:4013 205:2094
206:2414 207:2769 208:3201 209:3485 210:2513 211:1060
212:1304 213:1600 214:455 215:48 216:4230 217:1225
218:345 219:393 220:1059 221:403 222:313
End of report
