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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 09 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247786
Prefixes after maximum aggregation: 125174
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120299
Total ASes present in the Internet Routing Table: 27560
Prefixes per ASN: 8.99
Origin-only ASes present in the Internet Routing Table: 24007
Origin ASes announcing only one prefix: 11647
Transit ASes present in the Internet Routing Table: 3553
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: 40
Unregistered ASNs in the Routing Table: 18
Number of 32-bit ASNs allocated by the RIRs: 45
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: 882
Number of addresses announced to Internet: 1857293600
Equivalent to 110 /8s, 180 /16s and 13 /24s
Percentage of available address space announced: 50.1
Percentage of allocated address space announced: 61.5
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: 117451
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56692
Total APNIC prefixes after maximum aggregation: 20943
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54109
Unique aggregates announced from the APNIC address blocks: 23116
APNIC Region origin ASes present in the Internet Routing Table: 3157
APNIC Prefixes per ASN: 17.14
APNIC Region origin ASes announcing only one prefix: 840
APNIC Region transit ASes present in the Internet Routing Table: 486
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 334821024
Equivalent to 19 /8s, 244 /16s and 246 /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: 115632
Total ARIN prefixes after maximum aggregation: 65330
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84377
Unique aggregates announced from the ARIN address blocks: 33491
ARIN Region origin ASes present in the Internet Routing Table: 12181
ARIN Prefixes per ASN: 6.93
ARIN Region origin ASes announcing only one prefix: 4682
ARIN Region transit ASes present in the Internet Routing Table: 1153
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356803200
Equivalent to 21 /8s, 68 /16s and 98 /24s
Percentage of available ARIN address space announced: 73.3
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: 52933
Total RIPE prefixes after maximum aggregation: 32986
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 48042
Unique aggregates announced from the RIPE address blocks: 32255
RIPE Region origin ASes present in the Internet Routing Table: 11002
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5746
RIPE Region transit ASes present in the Internet Routing Table: 1681
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346954496
Equivalent to 20 /8s, 174 /16s and 27 /24s
Percentage of available RIPE address space announced: 79.5
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: 18885
Total LACNIC prefixes after maximum aggregation: 4772
LACNIC Deaggregation factor: 3.96
Prefixes being announced from the LACNIC address blocks: 17243
Unique aggregates announced from the LACNIC address blocks: 9403
LACNIC Region origin ASes present in the Internet Routing Table: 910
LACNIC Prefixes per ASN: 18.95
LACNIC Region origin ASes announcing only one prefix: 302
LACNIC Region transit ASes present in the Internet Routing Table: 157
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49115648
Equivalent to 2 /8s, 237 /16s and 114 /24s
Percentage of available LACNIC address space announced: 48.8
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: 3602
Total AfriNIC prefixes after maximum aggregation: 1127
AfriNIC Deaggregation factor: 3.20
Prefixes being announced from the AfriNIC address blocks: 4016
Unique aggregates announced from the AfriNIC address blocks: 1801
AfriNIC Region origin ASes present in the Internet Routing Table: 231
AfriNIC Prefixes per ASN: 17.39
AfriNIC Region origin ASes announcing only one prefix: 77
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: 10039040
Equivalent to 0 /8s, 153 /16s and 47 /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 1543 381 125 Videsh Sanchar Nigam Ltd. Aut
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1149 109 25 Sify Limited
17488 1017 65 82 Hathway IP Over Cable Interne
4134 853 12379 314 CHINANET-BACKBONE
4766 847 6005 340 Korea Telecom (KIX)
23577 814 34 697 Korea Telecom (ATM-MPLS)
18101 681 127 60 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 1426 5944 1001 AT&T WorldNet Services
4323 1385 1012 366 Time Warner Telecom
2386 1378 638 840 AT&T Data Communications Serv
11492 1211 144 26 Cable One
7011 1063 309 609 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 996 729 476 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 392 188 7 TEDATA
3301 338 1443 307 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 292 78 24 Bulgarian Telecommunication C
8551 278 267 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 271 2607 94 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 1189 2449 222 UniNet S.A. de C.V.
11830 553 299 24 Instituto Costarricense de El
7303 450 218 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 402 116 67 Servicios Alestra S.A de C.V
6471 398 85 40 ENTEL CHILE S.A.
10620 369 97 51 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
10481 325 124 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 448 60 27 LINKdotNET AS number
3741 288 869 224 The Internet Solution
2018 251 276 118 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 1543 381 125 Videsh Sanchar Nigam Ltd. Aut
7018 1426 5944 1001 AT&T WorldNet Services
4323 1385 1012 366 Time Warner Telecom
2386 1378 638 840 AT&T Data Communications Serv
11492 1211 144 26 Cable One
8151 1189 2449 222 UniNet S.A. de C.V.
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1149 109 25 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 1211 1185 Cable One
9583 1149 1124 Sify Limited
9498 1155 1089 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1385 1019 Time Warner Telecom
8151 1189 967 UniNet S.A. de C.V.
17488 1017 935 Hathway IP Over Cable Interne
1785 975 868 AppliedTheory Corporation
6478 931 821 AT&T Worldnet Services
22773 886 821 Cox Communications, Inc.
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 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
64601 PRIVATE 118.232.224.0/21 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 /8:20 /9:9 /10:16 /11:40 /12:139
/13:278 /14:496 /15:989 /16:9764 /17:4240 /18:7175
/19:15164 /20:17396 /21:16547 /22:20928 /23:21991 /24:129872
/25:895 /26:1124 /27:578 /28:107 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1211 Cable One
2386 1084 1378 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 986 1149 Sify Limited
7011 946 1063 Citizens Utilities
6478 930 931 AT&T Worldnet Services
4755 918 1543 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 12:1993 13:2 15:21
16:3 17:6 18:13 20:35 24:1031 25:1
32:61 33:4 38:399 40:65 41:620 44:2
47:8 52:3 55:3 56:3 57:22 58:511
59:420 60:418 61:982 62:1125 63:1961 64:3342
65:2350 66:3620 67:1023 68:637 69:2094 70:476
71:106 72:1484 73:6 74:851 75:173 76:265
77:584 78:510 79:115 80:879 81:816 82:606
83:356 84:555 85:1011 86:391 87:633 88:290
89:1174 90:11 91:1081 92:165 93:135 96:16
97:14 98:71 99:3 116:559 117:269 118:81
119:166 121:447 122:712 123:310 124:815 125:1117
128:321 129:200 130:132 131:400 132:69 133:9
134:188 135:32 136:222 137:118 138:154 139:64
140:484 141:109 142:378 143:269 144:342 145:53
146:334 147:132 148:496 149:178 150:119 151:155
152:144 153:131 154:11 155:265 156:207 157:251
158:164 159:218 160:243 161:101 162:201 163:193
164:564 165:427 166:295 167:310 168:590 169:130
170:426 171:29 172:3 189:157 190:1372 192:5747
193:4096 194:3259 195:2361 196:1083 198:3770 199:3195
200:5478 201:1305 202:7586 203:7724 204:3983 205:2095
206:2399 207:2749 208:3203 209:3439 210:2514 211:1027
212:1313 213:1608 214:440 215:48 216:4182 217:1229
218:339 219:388 220:1072 221:400 222:309
End of report
