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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 26 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247227
Prefixes after maximum aggregation: 125182
Deaggregation factor: 1.97
Unique aggregates announced to Internet: 119593
Total ASes present in the Internet Routing Table: 27439
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 23926
Origin ASes announcing only one prefix: 11611
Transit ASes present in the Internet Routing Table: 3513
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 44
Unregistered ASNs in the Routing Table: 12
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: 878
Number of addresses announced to Internet: 1835725568
Equivalent to 109 /8s, 106 /16s and 243 /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: 70.4
Total number of prefixes smaller than registry allocations: 117066
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56551
Total APNIC prefixes after maximum aggregation: 20816
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 54041
Unique aggregates announced from the APNIC address blocks: 22874
APNIC Region origin ASes present in the Internet Routing Table: 3133
APNIC Prefixes per ASN: 17.25
APNIC Region origin ASes announcing only one prefix: 826
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: 330839744
Equivalent to 19 /8s, 184 /16s and 54 /24s
Percentage of available APNIC address space announced: 75.8
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: 115919
Total ARIN prefixes after maximum aggregation: 65598
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84610
Unique aggregates announced from the ARIN address blocks: 33362
ARIN Region origin ASes present in the Internet Routing Table: 12157
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4692
ARIN Region transit ASes present in the Internet Routing Table: 1148
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356407168
Equivalent to 21 /8s, 62 /16s and 87 /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: 52493
Total RIPE prefixes after maximum aggregation: 32900
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47615
Unique aggregates announced from the RIPE address blocks: 31994
RIPE Region origin ASes present in the Internet Routing Table: 10941
RIPE Prefixes per ASN: 4.35
RIPE Region origin ASes announcing only one prefix: 5721
RIPE Region transit ASes present in the Internet Routing Table: 1660
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346488064
Equivalent to 20 /8s, 166 /16s and 253 /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: 18708
Total LACNIC prefixes after maximum aggregation: 4731
LACNIC Deaggregation factor: 3.95
Prefixes being announced from the LACNIC address blocks: 17091
Unique aggregates announced from the LACNIC address blocks: 9355
LACNIC Region origin ASes present in the Internet Routing Table: 907
LACNIC Prefixes per ASN: 18.84
LACNIC Region origin ASes announcing only one prefix: 300
LACNIC Region transit ASes present in the Internet Routing Table: 150
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48441344
Equivalent to 2 /8s, 227 /16s and 40 /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: 3511
Total AfriNIC prefixes after maximum aggregation: 1119
AfriNIC Deaggregation factor: 3.14
Prefixes being announced from the AfriNIC address blocks: 3947
Unique aggregates announced from the AfriNIC address blocks: 1798
AfriNIC Region origin ASes present in the Internet Routing Table: 227
AfriNIC Prefixes per ASN: 17.39
AfriNIC Region origin ASes announcing only one prefix: 72
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: 9978880
Equivalent to 0 /8s, 152 /16s and 68 /24s
Percentage of available AfriNIC address space announced: 29.7
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 1150 109 22 Sify Limited
9498 1133 550 64 BHARTI BT INTERNET LTD.
17488 992 64 89 Hathway IP Over Cable Interne
4766 854 5495 345 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 556 941 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 1424 5988 990 AT&T WorldNet Services
4323 1372 1011 361 Time Warner Telecom
2386 1360 634 837 AT&T Data Communications Serv
11492 1209 138 32 Cable One
7011 1061 308 614 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 1037 762 511 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 397 1778 362 TDC Tele Danmark
8452 389 188 7 TEDATA
3301 335 1443 305 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 289 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 275 2046 256 DFN-IP service G-WiN
8708 275 421 245 Romania Data Systems S.A.
3215 272 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 1169 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.
11172 398 115 65 Servicios Alestra S.A de C.V
6471 395 85 40 ENTEL CHILE S.A.
10620 366 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 414 60 30 LINKdotNET AS number
3741 281 869 223 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 1424 5988 990 AT&T WorldNet Services
4323 1372 1011 361 Time Warner Telecom
2386 1360 634 837 AT&T Data Communications Serv
11492 1209 138 32 Cable One
8151 1169 2437 218 UniNet S.A. de C.V.
9583 1150 109 22 Sify Limited
9498 1133 550 64 BHARTI BT INTERNET LTD.
7011 1061 308 614 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 1150 1128 Sify Limited
9498 1133 1069 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1372 1011 Time Warner Telecom
8151 1169 951 UniNet S.A. de C.V.
17488 992 903 Hathway IP Over Cable Interne
6478 927 815 AT&T Worldnet Services
22773 873 808 Cox Communications, Inc.
19262 884 733 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 /14:494 /15:986 /16:9768 /17:4252 /18:7121
/19:15173 /20:17345 /21:16478 /22:20839 /23:21941 /24:129657
/25:881 /26:1110 /27:565 /28:106 /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 1066 1360 AT&T Data Communications Serv
18566 1023 1042 Covad Communications
9583 986 1150 Sify Limited
7011 944 1061 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 1133 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 12:1981 13:2 15:21 16:3
17:6 18:13 20:35 24:1027 25:1 32:61
33:4 38:390 40:65 41:600 44:2 47:8
52:3 55:3 56:3 57:22 58:521 59:424
60:407 61:988 62:1081 63:1952 64:3358 65:2372
66:3639 67:1136 68:629 69:2101 70:485 71:123
72:1455 73:6 74:846 75:237 76:259 77:561
78:498 79:81 80:874 81:823 82:589 83:355
84:521 85:1007 86:395 87:647 88:295 89:1172
90:11 91:1046 92:137 93:79 95:2 96:13
97:10 98:75 99:3 114:1 115:1 116:533
117:257 118:79 119:154 121:439 122:708 123:290
124:805 125:1097 128:310 129:198 130:132 131:400
132:69 133:9 134:187 135:37 136:220 137:117
138:153 139:63 140:488 141:108 142:377 143:271
144:340 145:53 146:335 147:131 148:485 149:178
150:124 151:149 152:93 153:131 154:11 155:291
156:202 157:250 158:164 159:217 160:245 161:102
162:203 163:194 164:567 165:424 166:292 167:307
168:583 169:133 170:433 171:28 172:3 189:154
190:1395 192:5760 193:4105 194:3253 195:2340 196:1071
198:3777 199:3197 200:5453 201:1279 202:7599 203:7779
204:3971 205:2072 206:2415 207:2727 208:3154 209:3556
210:2531 211:1034 212:1307 213:1588 214:453 215:47
216:4156 217:1198 218:337 219:399 220:1096 221:402
222:308
End of report
