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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 07 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247949
Prefixes after maximum aggregation: 125194
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120320
Total ASes present in the Internet Routing Table: 27555
Prefixes per ASN: 9.00
Origin-only ASes present in the Internet Routing Table: 24001
Origin ASes announcing only one prefix: 11649
Transit ASes present in the Internet Routing Table: 3554
Transit-only ASes present in the Internet Routing Table: 77
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: 38
Unregistered ASNs in the Routing Table: 14
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: 863
Number of addresses announced to Internet: 1857388320
Equivalent to 110 /8s, 181 /16s and 127 /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: 70.7
Total number of prefixes smaller than registry allocations: 117655
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56624
Total APNIC prefixes after maximum aggregation: 20939
APNIC Deaggregation factor: 2.70
Prefixes being announced from the APNIC address blocks: 54066
Unique aggregates announced from the APNIC address blocks: 23110
APNIC Region origin ASes present in the Internet Routing Table: 3155
APNIC Prefixes per ASN: 17.14
APNIC Region origin ASes announcing only one prefix: 836
APNIC Region transit ASes present in the Internet Routing Table: 484
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 334820000
Equivalent to 19 /8s, 244 /16s and 242 /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: 116020
Total ARIN prefixes after maximum aggregation: 65358
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 84736
Unique aggregates announced from the ARIN address blocks: 33437
ARIN Region origin ASes present in the Internet Routing Table: 12186
ARIN Prefixes per ASN: 6.95
ARIN Region origin ASes announcing only one prefix: 4696
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: 356782208
Equivalent to 21 /8s, 68 /16s and 16 /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: 52866
Total RIPE prefixes after maximum aggregation: 33012
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47968
Unique aggregates announced from the RIPE address blocks: 32298
RIPE Region origin ASes present in the Internet Routing Table: 10998
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5740
RIPE Region transit ASes present in the Internet Routing Table: 1687
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346965760
Equivalent to 20 /8s, 174 /16s and 71 /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: 18842
Total LACNIC prefixes after maximum aggregation: 4744
LACNIC Deaggregation factor: 3.97
Prefixes being announced from the LACNIC address blocks: 17229
Unique aggregates announced from the LACNIC address blocks: 9423
LACNIC Region origin ASes present in the Internet Routing Table: 906
LACNIC Prefixes per ASN: 19.02
LACNIC Region origin ASes announcing only one prefix: 299
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: 48981504
Equivalent to 2 /8s, 235 /16s and 102 /24s
Percentage of available LACNIC address space announced: 48.7
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: 3556
Total AfriNIC prefixes after maximum aggregation: 1125
AfriNIC Deaggregation factor: 3.16
Prefixes being announced from the AfriNIC address blocks: 3993
Unique aggregates announced from the AfriNIC address blocks: 1800
AfriNIC Region origin ASes present in the Internet Routing Table: 232
AfriNIC Prefixes per ASN: 17.21
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 44
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10017024
Equivalent to 0 /8s, 152 /16s and 217 /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 1540 381 125 Videsh Sanchar Nigam Ltd. Aut
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1147 109 24 Sify Limited
17488 1006 65 95 Hathway IP Over Cable Interne
4134 853 12363 314 CHINANET-BACKBONE
4766 847 6005 340 Korea Telecom (KIX)
23577 816 34 699 Korea Telecom (ATM-MPLS)
18101 681 127 60 Reliance Infocom Ltd Internet
9829 595 449 11 BSNL National Internet Backbo
4812 558 949 89 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 999 AT&T WorldNet Services
4323 1384 1011 366 Time Warner Telecom
2386 1374 638 836 AT&T Data Communications Serv
11492 1214 144 26 Cable One
7011 1063 309 609 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 995 729 475 BellSouth Network Solutions,
1785 974 479 107 AppliedTheory Corporation
174 968 6835 817 Cogent Communications
6478 931 237 107 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 324 7045 269 Deutsche Telekom AG
8866 292 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 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 1193 2451 222 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 449 218 59 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 398 85 40 ENTEL CHILE S.A.
11172 397 115 65 Servicios Alestra S.A de C.V
10620 366 96 49 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 247 276 111 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 1540 381 125 Videsh Sanchar Nigam Ltd. Aut
7018 1426 5944 999 AT&T WorldNet Services
4323 1384 1011 366 Time Warner Telecom
2386 1374 638 836 AT&T Data Communications Serv
11492 1214 144 26 Cable One
8151 1193 2451 222 UniNet S.A. de C.V.
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1147 109 24 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 1214 1188 Cable One
9583 1147 1123 Sify Limited
9498 1156 1090 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1384 1018 Time Warner Telecom
8151 1193 971 UniNet S.A. de C.V.
17488 1006 911 Hathway IP Over Cable Interne
1785 974 867 AppliedTheory Corporation
6478 931 824 AT&T Worldnet Services
22773 885 820 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
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
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
64601 PRIVATE 118.232.224.0/20 9924 Taiwan Fixed Network
64601 PRIVATE 118.232.232.0/21 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
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 /8:20 /9:9 /10:16 /11:39 /12:138
/13:278 /14:496 /15:989 /16:9764 /17:4244 /18:7163
/19:15172 /20:17377 /21:16568 /22:20939 /23:22080 /24:129929
/25:898 /26:1123 /27:579 /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 1214 Cable One
2386 1081 1374 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 984 1147 Sify Limited
7011 946 1063 Citizens Utilities
6478 930 931 AT&T Worldnet Services
4755 916 1540 Videsh Sanchar Nigam Ltd. Aut
17488 822 1006 Hathway IP Over Cable Interne
9498 817 1156 BHARTI BT INTERNET LTD.
23577 807 816 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 12:1991 13:2 15:21
16:3 17:6 18:13 20:35 24:1039 25:1
32:61 33:4 38:398 40:65 41:619 44:2
47:8 52:3 55:3 56:3 57:22 58:522
59:420 60:416 61:979 62:1120 63:1960 64:3332
65:2359 66:3606 67:1019 68:636 69:2094 70:506
71:123 72:1483 73:6 74:866 75:233 76:264
77:583 78:501 79:90 80:879 81:814 82:606
83:355 84:532 85:1012 86:391 87:639 88:294
89:1185 90:11 91:1068 92:149 93:135 96:16
97:14 98:87 99:3 114:1 115:1 116:547
117:265 118:78 119:164 121:443 122:714 123:306
124:817 125:1117 128:322 129:199 130:132 131:401
132:69 133:9 134:188 135:32 136:222 137:118
138:153 139:63 140:487 141:108 142:378 143:270
144:343 145:53 146:331 147:129 148:496 149:178
150:120 151:155 152:145 153:131 154:11 155:266
156:203 157:251 158:164 159:217 160:246 161:101
162:201 163:192 164:550 165:429 166:295 167:311
168:587 169:133 170:421 171:29 172:3 189:166
190:1371 192:5758 193:4110 194:3261 195:2361 196:1071
198:3783 199:3196 200:5474 201:1307 202:7552 203:7717
204:3977 205:2087 206:2408 207:2755 208:3194 209:3504
210:2528 211:1029 212:1315 213:1605 214:444 215:48
216:4175 217:1207 218:340 219:390 220:1074 221:400
222:310
End of report
