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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 27 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247417
Prefixes after maximum aggregation: 125263
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 119682
Total ASes present in the Internet Routing Table: 27462
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 23945
Origin ASes announcing only one prefix: 11622
Transit ASes present in the Internet Routing Table: 3517
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 40
Unregistered ASNs in the Routing Table: 14
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 880
Number of addresses announced to Internet: 1836224576
Equivalent to 109 /8s, 114 /16s and 144 /24s
Percentage of available address space announced: 49.5
Percentage of allocated address space announced: 60.8
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 70.5
Total number of prefixes smaller than registry allocations: 117228
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56581
Total APNIC prefixes after maximum aggregation: 20840
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 54064
Unique aggregates announced from the APNIC address blocks: 22906
APNIC Region origin ASes present in the Internet Routing Table: 3138
APNIC Prefixes per ASN: 17.23
APNIC Region origin ASes announcing only one prefix: 828
APNIC Region transit ASes present in the Internet Routing Table: 482
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 331096256
Equivalent to 19 /8s, 188 /16s and 32 /24s
Percentage of available APNIC address space announced: 75.9
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: 115965
Total ARIN prefixes after maximum aggregation: 65637
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84635
Unique aggregates announced from the ARIN address blocks: 33368
ARIN Region origin ASes present in the Internet Routing Table: 12168
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4701
ARIN Region transit ASes present in the Internet Routing Table: 1147
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 356382592
Equivalent to 21 /8s, 61 /16s and 247 /24s
Percentage of available ARIN address space announced: 73.2
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: 52543
Total RIPE prefixes after maximum aggregation: 32913
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47667
Unique aggregates announced from the RIPE address blocks: 31999
RIPE Region origin ASes present in the Internet Routing Table: 10949
RIPE Prefixes per ASN: 4.35
RIPE Region origin ASes announcing only one prefix: 5722
RIPE Region transit ASes present in the Internet Routing Table: 1662
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 346514176
Equivalent to 20 /8s, 167 /16s and 99 /24s
Percentage of available RIPE address space announced: 79.4
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: 18749
Total LACNIC prefixes after maximum aggregation: 4731
LACNIC Deaggregation factor: 3.96
Prefixes being announced from the LACNIC address blocks: 17139
Unique aggregates announced from the LACNIC address blocks: 9389
LACNIC Region origin ASes present in the Internet Routing Table: 907
LACNIC Prefixes per ASN: 18.90
LACNIC Region origin ASes announcing only one prefix: 298
LACNIC Region transit ASes present in the Internet Routing Table: 151
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48454144
Equivalent to 2 /8s, 227 /16s and 90 /24s
Percentage of available LACNIC address space announced: 48.1
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: 3538
Total AfriNIC prefixes after maximum aggregation: 1124
AfriNIC Deaggregation factor: 3.15
Prefixes being announced from the AfriNIC address blocks: 3972
Unique aggregates announced from the AfriNIC address blocks: 1797
AfriNIC Region origin ASes present in the Internet Routing Table: 228
AfriNIC Prefixes per ASN: 17.42
AfriNIC Region origin ASes announcing only one prefix: 73
AfriNIC Region transit ASes present in the Internet Routing Table: 45
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10003456
Equivalent to 0 /8s, 152 /16s and 164 /24s
Percentage of available AfriNIC address space announced: 29.8
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 1582 386 81 Videsh Sanchar Nigam Ltd. Aut
9583 1149 109 22 Sify Limited
9498 1135 550 64 BHARTI BT INTERNET LTD.
17488 992 64 89 Hathway IP Over Cable Interne
4766 856 5496 346 Korea Telecom (KIX)
4134 852 12089 313 CHINANET-BACKBONE
23577 813 34 697 Korea Telecom (ATM-MPLS)
18101 708 127 62 Reliance Infocom Ltd Internet
9829 596 449 11 BSNL National Internet Backbo
4812 554 941 88 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 1419 5988 990 AT&T WorldNet Services
4323 1377 1011 364 Time Warner Telecom
2386 1367 638 841 AT&T Data Communications Serv
11492 1209 138 32 Cable One
7011 1066 309 613 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 995 729 475 BellSouth Network Solutions,
174 984 6835 815 Cogent Communications
6478 927 237 112 AT&T Worldnet Services
20115 887 808 484 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 390 188 7 TEDATA
3301 335 1443 305 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 291 78 24 Bulgarian Telecommunication C
8551 278 267 42 Bezeq International
680 275 2046 256 DFN-IP service G-WiN
8708 275 421 245 Romania Data Systems S.A.
3215 273 2607 94 France Telecom Transpac
6746 269 128 247 Dynamic Network Technologies,
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 1171 2437 218 UniNet S.A. de C.V.
11830 555 299 9 Instituto Costarricense de El
7303 445 216 56 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 399 85 40 ENTEL CHILE S.A.
11172 397 115 65 Servicios Alestra S.A de C.V
10620 367 96 49 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
22047 323 270 14 VTR PUNTO NET S.A.
10481 301 120 10 Prima 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 443 60 31 LINKdotNET AS number
3741 282 869 224 The Internet Solution
2018 245 276 111 Tertiary Education Network
20858 211 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 1582 386 81 Videsh Sanchar Nigam Ltd. Aut
7018 1419 5988 990 AT&T WorldNet Services
4323 1377 1011 364 Time Warner Telecom
2386 1367 638 841 AT&T Data Communications Serv
11492 1209 138 32 Cable One
8151 1171 2437 218 UniNet S.A. de C.V.
9583 1149 109 22 Sify Limited
9498 1135 550 64 BHARTI BT INTERNET LTD.
7011 1066 309 613 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 1209 1177 Cable One
9583 1149 1127 Sify Limited
9498 1135 1071 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1377 1013 Time Warner Telecom
8151 1171 953 UniNet S.A. de C.V.
17488 992 903 Hathway IP Over Cable Interne
6478 927 815 AT&T Worldnet Services
22773 874 809 Cox Communications, Inc.
19262 883 732 Verizon Global Networks
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15190 UNALLOCATED 63.98.176.0/24 701 UUNET Technologies,
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
21624 UNALLOCATED 65.163.176.0/24 701 UUNET Technologies,
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
24.142.40.0/21 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 /8:19 /9:9 /10:16 /11:39 /12:134
/13:276 /14:496 /15:990 /16:9775 /17:4256 /18:7122
/19:15184 /20:17330 /21:16500 /22:20865 /23:21956 /24:129770
/25:889 /26:1107 /27:569 /28:97 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1197 1209 Cable One
2386 1073 1367 AT&T Data Communications Serv
18566 1023 1042 Covad Communications
9583 985 1149 Sify Limited
7011 949 1066 Citizens Utilities
4755 934 1582 Videsh Sanchar Nigam Ltd. Aut
6478 926 927 AT&T Worldnet Services
17488 807 992 Hathway IP Over Cable Interne
23577 804 813 Korea Telecom (ATM-MPLS)
9498 803 1135 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:101 12:1987 13:2 15:21 16:3
17:6 18:13 20:35 24:1029 25:1 32:61
33:4 38:391 40:65 41:604 44:2 47:8
52:3 55:3 56:3 57:22 58:520 59:424
60:407 61:986 62:1089 63:1954 64:3359 65:2374
66:3640 67:1136 68:629 69:2106 70:485 71:123
72:1458 73:6 74:848 75:237 76:260 77:559
78:498 79:82 80:889 81:822 82:595 83:354
84:523 85:1008 86:387 87:651 88:299 89:1173
90:12 91:1052 92:137 93:80 95:2 96:14
97:10 98:83 99:3 114:1 115:1 116:533
117:265 118:85 119:154 121:440 122:708 123:292
124:804 125:1096 128:310 129:198 130:132 131:400
132:69 133:9 134:187 135:37 136:220 137:117
138:153 139:63 140:486 141:108 142:377 143:270
144:338 145:53 146:335 147:131 148:486 149:178
150:124 151:149 152:92 153:132 154:11 155:291
156:202 157:250 158:164 159:217 160:245 161:101
162:204 163:195 164:567 165:425 166:293 167:307
168:586 169:133 170:432 171:28 172:3 189:154
190:1405 192:5764 193:4103 194:3259 195:2331 196:1074
198:3778 199:3200 200:5465 201:1294 202:7600 203:7780
204:3959 205:2063 206:2415 207:2728 208:3158 209:3557
210:2531 211:1033 212:1295 213:1598 214:450 215:47
216:4154 217:1200 218:335 219:399 220:1096 221:403
222:308
End of report
