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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 22 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 256279
Prefixes after maximum aggregation: 127276
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124148
Total ASes present in the Internet Routing Table: 28260
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24636
Origin ASes announcing only one prefix: 11864
Transit ASes present in the Internet Routing Table: 3624
Transit-only ASes present in the Internet Routing Table: 83
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 602
Unregistered ASNs in the Routing Table: 220
Number of 32-bit ASNs allocated by the RIRs: 47
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: 788
Number of addresses announced to Internet: 1869426912
Equivalent to 111 /8s, 109 /16s and 48 /24s
Percentage of available address space announced: 50.4
Percentage of allocated address space announced: 61.9
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.9
Total number of prefixes smaller than registry allocations: 123586
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 58731
Total APNIC prefixes after maximum aggregation: 21570
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 55774
Unique aggregates announced from the APNIC address blocks: 23821
APNIC Region origin ASes present in the Internet Routing Table: 3238
APNIC Prefixes per ASN: 17.22
APNIC Region origin ASes announcing only one prefix: 852
APNIC Region transit ASes present in the Internet Routing Table: 500
Average APNIC Region AS path length visible: 3.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 349317600
Equivalent to 20 /8s, 210 /16s and 41 /24s
Percentage of available APNIC address space announced: 80.1
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: 117641
Total ARIN prefixes after maximum aggregation: 65159
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 87157
Unique aggregates announced from the ARIN address blocks: 34223
ARIN Region origin ASes present in the Internet Routing Table: 12184
ARIN Prefixes per ASN: 7.15
ARIN Region origin ASes announcing only one prefix: 4695
ARIN Region transit ASes present in the Internet Routing Table: 1136
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 356981696
Equivalent to 21 /8s, 71 /16s and 27 /24s
Percentage of available ARIN address space announced: 73.4
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, 46080-47103
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: 55223
Total RIPE prefixes after maximum aggregation: 33767
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50394
Unique aggregates announced from the RIPE address blocks: 33790
RIPE Region origin ASes present in the Internet Routing Table: 11353
RIPE Prefixes per ASN: 4.44
RIPE Region origin ASes announcing only one prefix: 5930
RIPE Region transit ASes present in the Internet Routing Table: 1722
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 357813376
Equivalent to 21 /8s, 83 /16s and 204 /24s
Percentage of available RIPE address space announced: 82.0
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, 47104-48127
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: 20203
Total LACNIC prefixes after maximum aggregation: 5079
LACNIC Deaggregation factor: 3.98
Prefixes being announced from the LACNIC address blocks: 18561
Unique aggregates announced from the LACNIC address blocks: 10073
LACNIC Region origin ASes present in the Internet Routing Table: 946
LACNIC Prefixes per ASN: 19.62
LACNIC Region origin ASes announcing only one prefix: 310
LACNIC Region transit ASes present in the Internet Routing Table: 158
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 51574016
Equivalent to 3 /8s, 18 /16s and 245 /24s
Percentage of available LACNIC address space announced: 51.2
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: 3884
Total AfriNIC prefixes after maximum aggregation: 1203
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4183
Unique aggregates announced from the AfriNIC address blocks: 1854
AfriNIC Region origin ASes present in the Internet Routing Table: 242
AfriNIC Prefixes per ASN: 17.29
AfriNIC Region origin ASes announcing only one prefix: 77
AfriNIC Region transit ASes present in the Internet Routing Table: 48
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12232192
Equivalent to 0 /8s, 186 /16s and 166 /24s
Percentage of available AfriNIC address space announced: 36.5
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 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1170 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 852 12661 319 CHINANET-BACKBONE
4766 847 6006 343 Korea Telecom (KIX)
23577 823 34 703 Korea Telecom (ATM-MPLS)
18101 681 149 51 Reliance Infocom Ltd Internet
9829 597 450 12 BSNL National Internet Backbo
1221 544 1918 418 Telstra Pty Ltd
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
6389 1856 3045 168 bellsouth.net, inc.
4323 1461 1046 380 Time Warner Telecom
2386 1439 659 872 AT&T Data Communications Serv
7018 1383 5956 986 AT&T WorldNet Services
11492 1221 148 14 Cable One
7011 1088 302 617 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1021 510 105 AppliedTheory Corporation
6197 987 597 507 BellSouth Network Solutions,
174 962 6836 802 Cogent 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 409 1788 369 TDC Tele Danmark
8452 356 188 7 TEDATA
9198 345 74 9 Kazakhtelecom Data Network Ad
3301 336 1458 304 TeliaNet Sweden
3320 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 291 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 279 2686 90 France Telecom Transpac
680 275 2047 265 DFN-IP service G-WiN
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 1218 2464 228 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 565 270 14 VTR PUNTO NET S.A.
7303 460 225 66 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 410 117 67 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 330 36 31 NEWCOM AMERICAS
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 472 61 28 LINKdotNET AS number
3741 286 853 223 The Internet Solution
20858 223 34 3 EgyNet
2018 182 173 82 Tertiary Education Network
5713 174 575 108 Telkom SA Ltd
6713 143 135 11 Itissalat Al-MAGHRIB
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 100 13 8 Ci Telecom Autonomous system
33776 99 6 7 Starcomms Nigeria Limited
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
6389 1856 3045 168 bellsouth.net, inc.
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1461 1046 380 Time Warner Telecom
2386 1439 659 872 AT&T Data Communications Serv
7018 1383 5956 986 AT&T WorldNet Services
11492 1221 148 14 Cable One
8151 1218 2464 228 UniNet S.A. de C.V.
9498 1170 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
7011 1088 302 617 Citizens Utilities
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1639 1548 Videsh Sanchar Nigam Ltd. Aut
11492 1221 1207 Cable One
9583 1149 1134 Sify Limited
9498 1170 1109 BHARTI BT INTERNET LTD.
4323 1461 1081 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1218 990 UniNet S.A. de C.V.
17488 1064 988 Hathway IP Over Cable Interne
1785 1021 916 AppliedTheory Corporation
22773 947 884 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
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.31.25.0/24 6517 Yipes Communications
27220 UNALLOCATED 12.35.204.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.51.159.0/24 7843 Adelphia Corp.
24.54.224.0/19 20001 HoldCo LLC - Road Runner
24.75.160.0/19 7843 Adelphia Corp.
24.75.192.0/18 7843 Adelphia Corp.
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 /11:42 /12:141
/13:281 /14:511 /15:1006 /16:9918 /17:4369 /18:7287
/19:15438 /20:17883 /21:17357 /22:21786 /23:22786 /24:135118
/25:792 /26:926 /27:494 /28:81 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1204 1221 Cable One
6389 1143 1856 bellsouth.net, inc.
2386 1138 1439 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 987 1149 Sify Limited
4755 985 1639 Videsh Sanchar Nigam Ltd. Aut
7011 972 1088 Citizens Utilities
6478 944 945 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 844 1170 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 8:108 12:2048 13:1 15:20 16:3
17:5 18:13 20:35 24:1070 25:1 32:61
33:3 38:421 40:93 41:657 44:2 47:6
52:3 55:3 56:3 57:23 58:510 59:462
60:442 61:981 62:1113 63:1955 64:3399 65:2418
66:3653 67:1192 68:678 69:2235 70:630 71:125
72:1757 73:5 74:971 75:215 76:304 77:663
78:619 79:153 80:898 81:859 82:608 83:391
84:567 85:1020 86:414 87:653 88:334 89:1260
90:11 91:1231 92:253 93:471 96:30 97:17
98:172 99:3 114:4 116:637 117:322 118:131
119:419 120:38 121:531 122:766 123:346 124:850
125:1132 128:325 129:200 130:130 131:405 132:66
133:9 134:174 135:33 136:222 137:90 138:151
139:64 140:483 141:99 142:399 143:305 144:360
145:50 146:363 147:152 148:503 149:183 150:131
151:190 152:141 153:134 154:10 155:273 156:173
157:271 158:163 159:221 160:255 161:113 162:229
163:186 164:522 165:447 166:309 167:322 168:621
169:131 170:426 171:28 172:10 189:167 190:2021
192:5786 193:4103 194:3218 195:2440 196:1062 198:3744
199:3263 200:5667 201:1449 202:7591 203:7828 204:3999
205:2078 206:2398 207:2759 208:3337 209:3424 210:2498
211:1053 212:1386 213:1628 214:470 215:50 216:4361
217:1203 218:355 219:416 220:1078 221:469 222:309
End of report
