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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 13 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255572
Prefixes after maximum aggregation: 127106
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123962
Total ASes present in the Internet Routing Table: 28151
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24543
Origin ASes announcing only one prefix: 11405
Transit ASes present in the Internet Routing Table: 3608
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25414
Unregistered ASNs in the Routing Table: 1885
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: 786
Number of addresses announced to Internet: 1851293088
Equivalent to 110 /8s, 88 /16s and 125 /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: 123056
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43220
Total APNIC prefixes after maximum aggregation: 13440
APNIC Deaggregation factor: 3.22
Prefixes being announced from the APNIC address blocks: 55639
Unique aggregates announced from the APNIC address blocks: 23665
APNIC Region origin ASes present in the Internet Routing Table: 1936
APNIC Prefixes per ASN: 28.74
APNIC Region origin ASes announcing only one prefix: 544
APNIC Region transit ASes present in the Internet Routing Table: 350
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 348634848
Equivalent to 20 /8s, 199 /16s and 190 /24s
Percentage of available APNIC address space announced: 79.9
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: 107828
Total ARIN prefixes after maximum aggregation: 59293
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86868
Unique aggregates announced from the ARIN address blocks: 34445
ARIN Region origin ASes present in the Internet Routing Table: 11803
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: 1039
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358298752
Equivalent to 21 /8s, 91 /16s and 52 /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: 55305
Total RIPE prefixes after maximum aggregation: 33673
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50509
Unique aggregates announced from the RIPE address blocks: 33699
RIPE Region origin ASes present in the Internet Routing Table: 11312
RIPE Prefixes per ASN: 4.47
RIPE Region origin ASes announcing only one prefix: 5902
RIPE Region transit ASes present in the Internet Routing Table: 1723
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356579712
Equivalent to 21 /8s, 64 /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: 19951
Total LACNIC prefixes after maximum aggregation: 4988
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 18389
Unique aggregates announced from the LACNIC address blocks: 9877
LACNIC Region origin ASes present in the Internet Routing Table: 898
LACNIC Prefixes per ASN: 20.48
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: 25
Number of LACNIC addresses announced to Internet: 51054080
Equivalent to 3 /8s, 11 /16s and 6 /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: 3853
Total AfriNIC prefixes after maximum aggregation: 1192
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4173
Unique aggregates announced from the AfriNIC address blocks: 1858
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: 75
AfriNIC Region transit ASes present in the Internet Routing Table: 50
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12205056
Equivalent to 0 /8s, 186 /16s and 60 /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 1636 387 91 Videsh Sanchar Nigam Ltd. Aut
9583 1175 140 15 Sify Limited
9498 1172 550 61 BHARTI BT INTERNET LTD.
17488 1064 70 76 Hathway IP Over Cable Interne
4134 854 12629 318 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 543 1918 417 Telstra Pty Ltd
4808 521 837 132 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 378 Time Warner Telecom
2386 1404 643 867 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 1027 630 541 BellSouth Network Solutions,
1785 1017 511 106 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 281 269 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 1201 2432 225 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 174 575 109 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 3098 3037 123 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1636 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1423 1014 378 Time Warner Telecom
2386 1404 643 867 AT&T Data Communications Serv
7018 1397 5976 993 AT&T WorldNet Services
11492 1213 146 32 Cable One
8151 1201 2432 225 UniNet S.A. de C.V.
9583 1175 140 15 Sify Limited
9498 1172 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 1636 1545 Videsh Sanchar Nigam Ltd. Aut
11492 1213 1181 Cable One
9583 1175 1160 Sify Limited
9498 1172 1111 BHARTI BT INTERNET LTD.
4323 1423 1045 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1064 988 Hathway IP Over Cable Interne
8151 1201 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 7018 AT&T WorldNet Servic
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 /12:140
/13:280 /14:508 /15:1001 /16:9900 /17:4365 /18:7289
/19:15409 /20:17841 /21:17252 /22:21686 /23:22737 /24:134801
/25:774 /26:922 /27:485 /28:81 /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 1104 1404 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1011 1175 Sify Limited
4755 982 1636 Videsh Sanchar Nigam Ltd. Aut
7011 978 1095 Citizens Utilities
6389 966 3098 bellsouth.net, inc.
6478 941 942 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 847 1172 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 12:2023 13:1 15:20 16:3
17:5 18:13 20:35 24:1068 25:1 32:61
33:3 38:420 40:93 41:665 44:2 47:12
52:3 55:3 56:3 57:22 58:516 59:458
60:442 61:980 62:1123 63:1963 64:3402 65:2427
66:3635 67:1186 68:659 69:2220 70:597 71:122
72:1673 73:6 74:958 75:226 76:307 77:660
78:609 79:148 80:904 81:865 82:627 83:390
84:563 85:1009 86:409 87:667 88:345 89:1299
90:11 91:1220 92:302 93:447 96:28 97:14
98:154 99:3 114:3 116:639 117:321 118:133
119:392 120:29 121:530 122:767 123:335 124:847
125:1130 128:322 129:197 130:129 131:403 132:66
133:9 134:180 135:33 136:221 137:113 138:145
139:118 140:483 141:96 142:392 143:283 144:352
145:50 146:365 147:152 148:502 149:183 150:131
151:181 152:141 153:133 154:10 155:271 156:174
157:267 158:165 159:220 160:254 161:111 162:214
163:198 164:520 165:447 166:305 167:318 168:619
169:131 170:426 171:28 172:2 189:196 190:1865
192:5775 193:4102 194:3260 195:2429 196:1070 198:3730
199:3240 200:5664 201:1448 202:7611 203:7817 204:3998
205:2078 206:2393 207:2745 208:3327 209:3427 210:2526
211:1049 212:1374 213:1654 214:450 215:50 216:4352
217:1226 218:349 219:407 220:1072 221:477 222:307
End of report
