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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 12 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255377
Prefixes after maximum aggregation: 127090
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123864
Total ASes present in the Internet Routing Table: 28141
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24532
Origin ASes announcing only one prefix: 11406
Transit ASes present in the Internet Routing Table: 3609
Transit-only ASes present in the Internet Routing Table: 77
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: 25373
Unregistered ASNs in the Routing Table: 1882
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 787
Number of addresses announced to Internet: 1849919392
Equivalent to 110 /8s, 67 /16s and 135 /24s
Percentage of available address space announced: 49.9
Percentage of allocated address space announced: 61.3
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.7
Total number of prefixes smaller than registry allocations: 122911
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43124
Total APNIC prefixes after maximum aggregation: 13434
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 55536
Unique aggregates announced from the APNIC address blocks: 23684
APNIC Region origin ASes present in the Internet Routing Table: 1932
APNIC Prefixes per ASN: 28.75
APNIC Region origin ASes announcing only one prefix: 542
APNIC Region transit ASes present in the Internet Routing Table: 352
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 347214560
Equivalent to 20 /8s, 178 /16s and 18 /24s
Percentage of available APNIC address space announced: 79.6
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: 107854
Total ARIN prefixes after maximum aggregation: 59299
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86904
Unique aggregates announced from the ARIN address blocks: 34418
ARIN Region origin ASes present in the Internet Routing Table: 11804
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4606
ARIN Region transit ASes present in the Internet Routing Table: 1040
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358337664
Equivalent to 21 /8s, 91 /16s and 204 /24s
Percentage of available ARIN address space announced: 73.7
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: 55228
Total RIPE prefixes after maximum aggregation: 33670
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50437
Unique aggregates announced from the RIPE address blocks: 33685
RIPE Region origin ASes present in the Internet Routing Table: 11309
RIPE Prefixes per ASN: 4.46
RIPE Region origin ASes announcing only one prefix: 5904
RIPE Region transit ASes present in the Internet Routing Table: 1719
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356383104
Equivalent to 21 /8s, 61 /16s and 249 /24s
Percentage of available RIPE address space announced: 81.7
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: 19941
Total LACNIC prefixes after maximum aggregation: 4983
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 18377
Unique aggregates announced from the LACNIC address blocks: 9874
LACNIC Region origin ASes present in the Internet Routing Table: 898
LACNIC Prefixes per ASN: 20.46
LACNIC Region origin ASes announcing only one prefix: 278
LACNIC Region transit ASes present in the Internet Routing Table: 153
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 51085568
Equivalent to 3 /8s, 11 /16s and 129 /24s
Percentage of available LACNIC address space announced: 50.7
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: 3856
Total AfriNIC prefixes after maximum aggregation: 1194
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4174
Unique aggregates announced from the AfriNIC address blocks: 1853
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.32
AfriNIC Region origin ASes announcing only one prefix: 76
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: 12200448
Equivalent to 0 /8s, 186 /16s and 42 /24s
Percentage of available AfriNIC address space announced: 36.4
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 1634 387 91 Videsh Sanchar Nigam Ltd. Aut
9583 1171 140 15 Sify Limited
9498 1170 550 61 BHARTI BT INTERNET LTD.
17488 1065 70 76 Hathway IP Over Cable Interne
4134 853 12613 317 CHINANET-BACKBONE
4766 848 6006 343 Korea Telecom (KIX)
18101 678 149 53 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 542 1918 416 Telstra Pty Ltd
4808 520 837 132 CNCGROUP IP network: China169
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
4323 1424 1014 378 Time Warner Telecom
2386 1402 643 865 AT&T Data Communications Serv
7018 1397 5976 993 AT&T WorldNet Services
11492 1213 146 32 Cable One
7011 1095 319 624 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1025 630 547 BellSouth Network Solutions,
1785 1016 511 104 AppliedTheory Corporation
174 976 6836 805 Cogent Communications
22773 949 2394 62 Cox Communications, Inc.
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
9198 428 74 9 Kazakhtelecom Data Network Ad
3292 409 1788 369 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 324 7044 267 Deutsche Telekom AG
8866 298 78 24 Bulgarian Telecommunication C
5462 292 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 278 2686 90 France Telecom Transpac
680 272 2047 262 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 1200 2432 224 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 456 223 62 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 413 117 69 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 343 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 463 61 27 LINKdotNET AS number
3741 289 853 223 The Internet Solution
20858 221 34 3 EgyNet
2018 181 173 82 Tertiary Education Network
5713 172 575 108 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 115 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 3096 3037 122 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1634 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1424 1014 378 Time Warner Telecom
2386 1402 643 865 AT&T Data Communications Serv
7018 1397 5976 993 AT&T WorldNet Services
11492 1213 146 32 Cable One
8151 1200 2432 224 UniNet S.A. de C.V.
9583 1171 140 15 Sify Limited
9498 1170 550 61 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1634 1543 Videsh Sanchar Nigam Ltd. Aut
11492 1213 1181 Cable One
9583 1171 1156 Sify Limited
9498 1170 1109 BHARTI BT INTERNET LTD.
4323 1424 1046 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1065 989 Hathway IP Over Cable Interne
8151 1200 976 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1642 941 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
14780 UNALLOCATED 4.79.181.0/24 10310 Yahoo!
12180 UNALLOCATED 4.79.248.0/24 1239 Sprint
12180 UNALLOCATED 8.10.16.0/24 3549 Global Crossing
12180 UNALLOCATED 8.10.58.0/23 3549 Global Crossing
14779 UNALLOCATED 8.12.144.0/24 10310 Yahoo!
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 1239 Sprint
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
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 /8:18 /9:9 /10:16 /11:40 /12:139
/13:280 /14:507 /15:1000 /16:9901 /17:4369 /18:7282
/19:15405 /20:17833 /21:17229 /22:21694 /23:22732 /24:134645
/25:774 /26:920 /27:486 /28:80 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1199 1213 Cable One
2386 1103 1402 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1007 1171 Sify Limited
4755 980 1634 Videsh Sanchar Nigam Ltd. Aut
7011 978 1095 Citizens Utilities
6389 965 3096 bellsouth.net, inc.
6478 940 941 AT&T Worldnet Services
17488 876 1065 Hathway IP Over Cable Interne
9498 846 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 12:2029 13:1 15:20 16:3
17:5 18:13 20:35 24:1069 25:1 32:61
33:3 38:420 40:94 41:664 44:2 47:9
52:3 55:3 56:3 57:22 58:516 59:458
60:441 61:963 62:1121 63:1960 64:3404 65:2429
66:3642 67:1182 68:664 69:2210 70:599 71:122
72:1674 73:6 74:958 75:226 76:306 77:656
78:609 79:149 80:904 81:863 82:627 83:390
84:562 85:1007 86:405 87:667 88:345 89:1299
90:11 91:1208 92:293 93:443 96:28 97:14
98:153 99:3 114:3 116:639 117:320 118:133
119:388 120:29 121:525 122:766 123:333 124:848
125:1130 128:322 129:197 130:129 131:403 132:66
133:9 134:180 135:31 136:221 137:113 138:144
139:66 140:489 141:96 142:397 143:280 144:349
145:50 146:353 147:152 148:501 149:183 150:131
151:180 152:141 153:133 154:10 155:271 156:174
157:267 158:163 159:222 160:254 161:110 162:214
163:197 164:520 165:447 166:305 167:318 168:618
169:131 170:426 171:28 172:2 189:180 190:1860
192:5768 193:4101 194:3255 195:2430 196:1071 198:3724
199:3239 200:5671 201:1451 202:7605 203:7807 204:4012
205:2086 206:2392 207:2746 208:3326 209:3431 210:2521
211:1049 212:1376 213:1653 214:448 215:50 216:4348
217:1229 218:349 219:407 220:1072 221:480 222:307
End of report
