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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 29 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247835
Prefixes after maximum aggregation: 125339
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 119748
Total ASes present in the Internet Routing Table: 27489
Prefixes per ASN: 9.02
Origin-only ASes present in the Internet Routing Table: 23965
Origin ASes announcing only one prefix: 11624
Transit ASes present in the Internet Routing Table: 3524
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 (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 41
Unregistered ASNs in the Routing Table: 15
Number of 32-bit ASNs allocated by the RIRs: 45
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: 881
Number of addresses announced to Internet: 1856484928
Equivalent to 110 /8s, 167 /16s and 182 /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: 70.6
Total number of prefixes smaller than registry allocations: 117565
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56645
Total APNIC prefixes after maximum aggregation: 20836
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 54125
Unique aggregates announced from the APNIC address blocks: 22923
APNIC Region origin ASes present in the Internet Routing Table: 3139
APNIC Prefixes per ASN: 17.24
APNIC Region origin ASes announcing only one prefix: 831
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: 334366400
Equivalent to 19 /8s, 238 /16s and 6 /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: 116186
Total ARIN prefixes after maximum aggregation: 65685
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84825
Unique aggregates announced from the ARIN address blocks: 33319
ARIN Region origin ASes present in the Internet Routing Table: 12178
ARIN Prefixes per ASN: 6.97
ARIN Region origin ASes announcing only one prefix: 4702
ARIN Region transit ASes present in the Internet Routing Table: 1141
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 356356992
Equivalent to 21 /8s, 61 /16s and 147 /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: 52644
Total RIPE prefixes after maximum aggregation: 32934
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47752
Unique aggregates announced from the RIPE address blocks: 32076
RIPE Region origin ASes present in the Internet Routing Table: 10959
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5714
RIPE Region transit ASes present in the Internet Routing Table: 1669
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346831616
Equivalent to 20 /8s, 172 /16s and 59 /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: 18758
Total LACNIC prefixes after maximum aggregation: 4742
LACNIC Deaggregation factor: 3.96
Prefixes being announced from the LACNIC address blocks: 17133
Unique aggregates announced from the LACNIC address blocks: 9376
LACNIC Region origin ASes present in the Internet Routing Table: 909
LACNIC Prefixes per ASN: 18.85
LACNIC Region origin ASes announcing only one prefix: 302
LACNIC Region transit ASes present in the Internet Routing Table: 153
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48689408
Equivalent to 2 /8s, 230 /16s and 241 /24s
Percentage of available LACNIC address space announced: 48.4
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: 3561
Total AfriNIC prefixes after maximum aggregation: 1124
AfriNIC Deaggregation factor: 3.17
Prefixes being announced from the AfriNIC address blocks: 4001
Unique aggregates announced from the AfriNIC address blocks: 1807
AfriNIC Region origin ASes present in the Internet Routing Table: 230
AfriNIC Prefixes per ASN: 17.40
AfriNIC Region origin ASes announcing only one prefix: 75
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: 10019328
Equivalent to 0 /8s, 152 /16s and 226 /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 1583 386 81 Videsh Sanchar Nigam Ltd. Aut
9583 1152 109 24 Sify Limited
9498 1141 550 66 BHARTI BT INTERNET LTD.
17488 992 64 89 Hathway IP Over Cable Interne
4766 857 6008 347 Korea Telecom (KIX)
4134 855 12361 315 CHINANET-BACKBONE
23577 813 34 697 Korea Telecom (ATM-MPLS)
18101 708 127 62 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 5989 990 AT&T WorldNet Services
2386 1379 638 841 AT&T Data Communications Serv
4323 1379 1011 366 Time Warner Telecom
11492 1210 138 28 Cable One
7011 1058 309 613 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 995 729 475 BellSouth Network Solutions,
174 987 6835 816 Cogent Communications
6478 930 238 114 AT&T Worldnet Services
20115 890 808 484 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 394 188 7 TEDATA
3301 336 1443 306 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 292 78 25 Bulgarian Telecommunication C
8551 278 267 42 Bezeq International
680 276 2046 256 DFN-IP service G-WiN
8708 275 421 245 Romania Data Systems S.A.
3215 273 2607 94 France Telecom Transpac
6746 268 128 246 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 1172 2437 218 UniNet S.A. de C.V.
11830 555 299 9 Instituto Costarricense de El
7303 446 216 57 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 399 115 65 Servicios Alestra S.A de C.V
6471 398 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 307 124 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 444 60 27 LINKdotNET AS number
3741 282 869 224 The Internet Solution
2018 246 276 111 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 1583 386 81 Videsh Sanchar Nigam Ltd. Aut
7018 1425 5989 990 AT&T WorldNet Services
2386 1379 638 841 AT&T Data Communications Serv
4323 1379 1011 366 Time Warner Telecom
11492 1210 138 28 Cable One
8151 1172 2437 218 UniNet S.A. de C.V.
9583 1152 109 24 Sify Limited
9498 1141 550 66 BHARTI BT INTERNET LTD.
7011 1058 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 1210 1182 Cable One
9583 1152 1128 Sify Limited
9498 1141 1075 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1379 1013 Time Warner Telecom
8151 1172 954 UniNet S.A. de C.V.
17488 992 903 Hathway IP Over Cable Interne
6478 930 816 AT&T Worldnet Services
22773 880 815 Cox Communications, Inc.
19262 883 733 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 63.107.123.0/24 701 UUNET Technologies,
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 /8:20 /9:9 /10:16 /11:40 /12:136
/13:276 /14:496 /15:988 /16:9766 /17:4249 /18:7123
/19:15188 /20:17357 /21:16529 /22:20929 /23:22039 /24:129969
/25:890 /26:1120 /27:569 /28:108 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1210 Cable One
2386 1085 1379 AT&T Data Communications Serv
18566 1023 1042 Covad Communications
9583 988 1152 Sify Limited
7011 941 1058 Citizens Utilities
4755 935 1583 Videsh Sanchar Nigam Ltd. Aut
6478 929 930 AT&T Worldnet Services
9498 809 1141 BHARTI BT INTERNET LTD.
17488 807 992 Hathway IP Over Cable Interne
23577 804 813 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 8:101 12:1987 13:2 15:21 16:3
17:6 18:13 20:35 24:1033 25:1 31:1
32:61 33:4 38:395 40:65 41:613 44:2
47:8 52:3 55:3 56:3 57:22 58:521
59:424 60:407 61:985 62:1089 63:1958 64:3365
65:2377 66:3661 67:1145 68:632 69:2120 70:487
71:123 72:1459 73:6 74:848 75:236 76:259
77:564 78:502 79:87 80:885 81:815 82:599
83:353 84:529 85:997 86:388 87:653 88:299
89:1173 90:12 91:1059 92:138 93:95 95:2
96:16 97:13 98:85 99:3 114:1 115:1
116:533 117:267 118:78 119:160 121:440 122:711
123:293 124:801 125:1100 128:319 129:198 130:132
131:401 132:69 133:9 134:187 135:37 136:221
137:118 138:153 139:63 140:487 141:108 142:377
143:268 144:343 145:53 146:335 147:131 148:486
149:177 150:124 151:149 152:92 153:131 154:11
155:291 156:202 157:250 158:164 159:218 160:245
161:101 162:204 163:195 164:565 165:426 166:295
167:308 168:588 169:133 170:425 171:28 172:3
189:159 190:1403 192:5766 193:4099 194:3259 195:2335
196:1081 198:3794 199:3198 200:5449 201:1298 202:7606
203:7781 204:3974 205:2078 206:2402 207:2729 208:3166
209:3561 210:2537 211:1031 212:1297 213:1602 214:449
215:48 216:4161 217:1200 218:338 219:399 220:1095
221:403 222:306
End of report
