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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 11 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255354
Prefixes after maximum aggregation: 127074
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123862
Total ASes present in the Internet Routing Table: 28132
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24531
Origin ASes announcing only one prefix: 11406
Transit ASes present in the Internet Routing Table: 3601
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25369
Unregistered ASNs in the Routing Table: 1883
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: 1849492640
Equivalent to 110 /8s, 61 /16s and 4 /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: 122924
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43154
Total APNIC prefixes after maximum aggregation: 13456
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 55567
Unique aggregates announced from the APNIC address blocks: 23679
APNIC Region origin ASes present in the Internet Routing Table: 1933
APNIC Prefixes per ASN: 28.75
APNIC Region origin ASes announcing only one prefix: 547
APNIC Region transit ASes present in the Internet Routing Table: 347
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 347258080
Equivalent to 20 /8s, 178 /16s and 188 /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: 107820
Total ARIN prefixes after maximum aggregation: 59256
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86879
Unique aggregates announced from the ARIN address blocks: 34406
ARIN Region origin ASes present in the Internet Routing Table: 11796
ARIN Prefixes per ASN: 7.37
ARIN Region origin ASes announcing only one prefix: 4605
ARIN Region transit ASes present in the Internet Routing Table: 1035
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358329216
Equivalent to 21 /8s, 91 /16s and 171 /24s
Percentage of available ARIN address space announced: 73.6
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: 55221
Total RIPE prefixes after maximum aggregation: 33670
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50435
Unique aggregates announced from the RIPE address blocks: 33709
RIPE Region origin ASes present in the Internet Routing Table: 11308
RIPE Prefixes per ASN: 4.46
RIPE Region origin ASes announcing only one prefix: 5901
RIPE Region transit ASes present in the Internet Routing Table: 1720
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356343936
Equivalent to 21 /8s, 61 /16s and 96 /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: 19935
Total LACNIC prefixes after maximum aggregation: 4984
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 18356
Unique aggregates announced from the LACNIC address blocks: 9873
LACNIC Region origin ASes present in the Internet Routing Table: 896
LACNIC Prefixes per ASN: 20.49
LACNIC Region origin ASes announcing only one prefix: 276
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: 19
Number of LACNIC addresses announced to Internet: 51085056
Equivalent to 3 /8s, 11 /16s and 127 /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: 3854
Total AfriNIC prefixes after maximum aggregation: 1195
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4171
Unique aggregates announced from the AfriNIC address blocks: 1854
AfriNIC Region origin ASes present in the Internet Routing Table: 242
AfriNIC Prefixes per ASN: 17.24
AfriNIC Region origin ASes announcing only one prefix: 77
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12200704
Equivalent to 0 /8s, 186 /16s and 43 /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 1177 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 544 1918 418 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 1423 1014 377 Time Warner Telecom
2386 1402 642 865 AT&T Data Communications Serv
7018 1396 5976 992 AT&T WorldNet Services
11492 1213 146 32 Cable One
7011 1095 319 624 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1029 630 543 BellSouth Network Solutions,
1785 1017 511 106 AppliedTheory Corporation
174 976 6836 805 Cogent Communications
22773 950 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 116 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 3098 3037 123 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1634 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1423 1014 377 Time Warner Telecom
2386 1402 642 865 AT&T Data Communications Serv
7018 1396 5976 992 AT&T WorldNet Services
11492 1213 146 32 Cable One
8151 1200 2432 224 UniNet S.A. de C.V.
9583 1177 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 1177 1162 Sify Limited
9498 1170 1109 BHARTI BT INTERNET LTD.
4323 1423 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 /15:999 /16:9897 /17:4368 /18:7280
/19:15398 /20:17836 /21:17228 /22:21707 /23:22736 /24:134620
/25:774 /26:920 /27:484 /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 1102 1402 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1013 1177 Sify Limited
4755 980 1634 Videsh Sanchar Nigam Ltd. Aut
7011 978 1095 Citizens Utilities
6389 966 3098 bellsouth.net, inc.
6478 940 941 AT&T Worldnet Services
17488 876 1065 Hathway IP Over Cable Interne
9498 845 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 12:2031 13:1 15:20 16:3
17:5 18:13 20:35 24:1069 25:1 32:61
33:3 38:419 40:94 41:663 44:2 47:9
52:3 55:3 56:3 57:22 58:516 59:458
60:441 61:977 62:1121 63:1956 64:3403 65:2430
66:3641 67:1183 68:664 69:2211 70:599 71:122
72:1674 73:6 74:958 75:227 76:306 77:652
78:608 79:149 80:904 81:865 82:628 83:389
84:561 85:1005 86:403 87:667 88:345 89:1297
90:11 91:1209 92:301 93:443 96:28 97:14
98:156 99:3 114:2 116:641 117:307 118:133
119:388 120:29 121:525 122:764 123:332 124:846
125:1130 128:323 129:197 130:129 131:402 132:67
133:9 134:180 135:31 136:222 137:112 138:144
139:66 140:492 141:95 142:397 143:280 144:349
145:50 146:364 147:152 148:500 149:181 150:131
151:181 152:141 153:133 154:10 155:271 156:174
157:267 158:165 159:222 160:254 161:110 162:214
163:197 164:520 165:447 166:305 167:318 168:620
169:130 170:423 171:28 172:2 189:175 190:1861
192:5767 193:4099 194:3253 195:2429 196:1069 198:3723
199:3237 200:5666 201:1449 202:7611 203:7806 204:4004
205:2080 206:2391 207:2743 208:3325 209:3431 210:2526
211:1048 212:1377 213:1654 214:448 215:50 216:4347
217:1227 218:349 219:407 220:1071 221:480 222:307
End of report
