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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 05 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 248141
Prefixes after maximum aggregation: 125325
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120112
Total ASes present in the Internet Routing Table: 27526
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 23996
Origin ASes announcing only one prefix: 11644
Transit ASes present in the Internet Routing Table: 3530
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: 37
Unregistered ASNs in the Routing Table: 13
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: 859
Number of addresses announced to Internet: 1856856864
Equivalent to 110 /8s, 173 /16s and 99 /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: 117807
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56782
Total APNIC prefixes after maximum aggregation: 20872
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 54213
Unique aggregates announced from the APNIC address blocks: 23052
APNIC Region origin ASes present in the Internet Routing Table: 3148
APNIC Prefixes per ASN: 17.22
APNIC Region origin ASes announcing only one prefix: 833
APNIC Region transit ASes present in the Internet Routing Table: 481
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 334583200
Equivalent to 19 /8s, 241 /16s and 85 /24s
Percentage of available APNIC address space announced: 76.7
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: 116206
Total ARIN prefixes after maximum aggregation: 65575
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84936
Unique aggregates announced from the ARIN address blocks: 33415
ARIN Region origin ASes present in the Internet Routing Table: 12176
ARIN Prefixes per ASN: 6.98
ARIN Region origin ASes announcing only one prefix: 4697
ARIN Region transit ASes present in the Internet Routing Table: 1143
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356557440
Equivalent to 21 /8s, 64 /16s and 162 /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: 52737
Total RIPE prefixes after maximum aggregation: 32988
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47847
Unique aggregates announced from the RIPE address blocks: 32219
RIPE Region origin ASes present in the Internet Routing Table: 10985
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5737
RIPE Region transit ASes present in the Internet Routing Table: 1676
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346856960
Equivalent to 20 /8s, 172 /16s and 158 /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: 18811
Total LACNIC prefixes after maximum aggregation: 4753
LACNIC Deaggregation factor: 3.96
Prefixes being announced from the LACNIC address blocks: 17167
Unique aggregates announced from the LACNIC address blocks: 9390
LACNIC Region origin ASes present in the Internet Routing Table: 909
LACNIC Prefixes per ASN: 18.89
LACNIC Region origin ASes announcing only one prefix: 300
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: 48861184
Equivalent to 2 /8s, 233 /16s and 144 /24s
Percentage of available LACNIC address space announced: 48.5
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: 3565
Total AfriNIC prefixes after maximum aggregation: 1121
AfriNIC Deaggregation factor: 3.18
Prefixes being announced from the AfriNIC address blocks: 4003
Unique aggregates announced from the AfriNIC address blocks: 1809
AfriNIC Region origin ASes present in the Internet Routing Table: 231
AfriNIC Prefixes per ASN: 17.33
AfriNIC Region origin ASes announcing only one prefix: 77
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: 10019840
Equivalent to 0 /8s, 152 /16s and 228 /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 1592 386 82 Videsh Sanchar Nigam Ltd. Aut
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1151 109 24 Sify Limited
17488 1001 64 93 Hathway IP Over Cable Interne
4134 853 12363 314 CHINANET-BACKBONE
4766 848 6005 337 Korea Telecom (KIX)
23577 814 34 697 Korea Telecom (ATM-MPLS)
18101 708 127 61 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 1425 5943 998 AT&T WorldNet Services
4323 1382 1011 366 Time Warner Telecom
2386 1373 638 835 AT&T Data Communications Serv
11492 1211 144 26 Cable One
7011 1063 309 609 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 995 729 475 BellSouth Network Solutions,
174 990 6835 816 Cogent Communications
6478 930 237 108 AT&T Worldnet Services
20115 890 810 486 Charter Communications
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 393 188 7 TEDATA
3301 336 1443 306 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 291 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 1180 2438 220 UniNet S.A. de C.V.
11830 555 299 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 398 115 66 Servicios Alestra S.A de C.V
10620 366 96 49 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
10481 330 124 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 445 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
23889 81 24 16 MAURITIUS TELECOM
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 1592 386 82 Videsh Sanchar Nigam Ltd. Aut
7018 1425 5943 998 AT&T WorldNet Services
4323 1382 1011 366 Time Warner Telecom
2386 1373 638 835 AT&T Data Communications Serv
11492 1211 144 26 Cable One
8151 1180 2438 220 UniNet S.A. de C.V.
9498 1155 550 66 BHARTI BT INTERNET LTD.
9583 1151 109 24 Sify Limited
7011 1063 309 609 Citizens Utilities
18566 1042 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 1151 1127 Sify Limited
9498 1155 1089 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1382 1016 Time Warner Telecom
8151 1180 960 UniNet S.A. de C.V.
17488 1001 908 Hathway IP Over Cable Interne
6478 930 822 AT&T Worldnet Services
22773 883 818 Cox Communications, Inc.
6389 887 803 bellsouth.net, 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
24.142.40.0/21 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
63.140.213.0/24 22555 Universal Talkware Corporatio
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 /15:988 /16:9767 /17:4261 /18:7161
/19:15185 /20:17363 /21:16584 /22:20951 /23:22039 /24:130130
/25:897 /26:1123 /27:569 /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 1211 Cable One
2386 1080 1373 AT&T Data Communications Serv
18566 1023 1042 Covad Communications
9583 988 1151 Sify Limited
7011 946 1063 Citizens Utilities
4755 943 1592 Videsh Sanchar Nigam Ltd. Aut
6478 929 930 AT&T Worldnet Services
9498 818 1155 BHARTI BT INTERNET LTD.
17488 817 1001 Hathway IP Over Cable Interne
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 8:99 11:1 12:1987 13:2 15:21
16:3 17:6 18:13 20:35 24:1029 25:1
32:61 33:4 38:397 40:65 41:615 44:2
47:8 52:3 55:3 56:3 57:22 58:524
59:427 60:415 61:989 62:1126 63:1963 64:3357
65:2373 66:3661 67:1149 68:634 69:2119 70:485
71:123 72:1490 73:6 74:854 75:236 76:261
77:563 78:509 79:89 80:884 81:816 82:598
83:356 84:532 85:1008 86:389 87:625 88:293
89:1174 90:12 91:1056 92:147 93:95 96:16
97:14 98:88 99:3 114:1 115:1 116:541
117:268 118:77 119:163 121:438 122:717 123:299
124:817 125:1116 128:322 129:199 130:132 131:401
132:69 133:9 134:188 135:32 136:222 137:118
138:153 139:61 140:486 141:108 142:377 143:273
144:344 145:53 146:335 147:129 148:489 149:178
150:120 151:149 152:145 153:131 154:11 155:269
156:203 157:250 158:164 159:217 160:246 161:101
162:201 163:191 164:562 165:426 166:295 167:310
168:589 169:133 170:427 171:29 172:3 189:158
190:1369 192:5761 193:4102 194:3255 195:2362 196:1081
198:3770 199:3193 200:5455 201:1306 202:7579 203:7789
204:3961 205:2111 206:2405 207:2728 208:3194 209:3548
210:2528 211:1031 212:1292 213:1595 214:445 215:48
216:4170 217:1208 218:339 219:400 220:1098 221:404
222:309
End of report
