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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 31 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 250094
Prefixes after maximum aggregation: 125905
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 121535
Total ASes present in the Internet Routing Table: 27747
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 24168
Origin ASes announcing only one prefix: 11220
Transit ASes present in the Internet Routing Table: 3579
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 (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 25030
Unregistered ASNs in the Routing Table: 1911
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: 849
Number of addresses announced to Internet: 1852369056
Equivalent to 110 /8s, 104 /16s and 232 /24s
Percentage of available address space announced: 50.0
Percentage of allocated address space announced: 61.4
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.0
Total number of prefixes smaller than registry allocations: 119236
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 42124
Total APNIC prefixes after maximum aggregation: 13279
APNIC Deaggregation factor: 3.17
Prefixes being announced from the APNIC address blocks: 54332
Unique aggregates announced from the APNIC address blocks: 23195
APNIC Region origin ASes present in the Internet Routing Table: 1881
APNIC Prefixes per ASN: 28.88
APNIC Region origin ASes announcing only one prefix: 537
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 337397344
Equivalent to 20 /8s, 28 /16s and 70 /24s
Percentage of available APNIC address space announced: 77.3
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: 106688
Total ARIN prefixes after maximum aggregation: 58774
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 85504
Unique aggregates announced from the ARIN address blocks: 33878
ARIN Region origin ASes present in the Internet Routing Table: 11669
ARIN Prefixes per ASN: 7.33
ARIN Region origin ASes announcing only one prefix: 4537
ARIN Region transit ASes present in the Internet Routing Table: 1046
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 361031552
Equivalent to 21 /8s, 132 /16s and 231 /24s
Percentage of available ARIN address space announced: 74.2
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: 53518
Total RIPE prefixes after maximum aggregation: 33103
RIPE Deaggregation factor: 1.62
Prefixes being announced from the RIPE address blocks: 48818
Unique aggregates announced from the RIPE address blocks: 32683
RIPE Region origin ASes present in the Internet Routing Table: 11098
RIPE Prefixes per ASN: 4.40
RIPE Region origin ASes announcing only one prefix: 5788
RIPE Region transit ASes present in the Internet Routing Table: 1698
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 350606976
Equivalent to 20 /8s, 229 /16s and 214 /24s
Percentage of available RIPE address space announced: 80.4
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: 19167
Total LACNIC prefixes after maximum aggregation: 4829
LACNIC Deaggregation factor: 3.97
Prefixes being announced from the LACNIC address blocks: 17513
Unique aggregates announced from the LACNIC address blocks: 9621
LACNIC Region origin ASes present in the Internet Routing Table: 884
LACNIC Prefixes per ASN: 19.81
LACNIC Region origin ASes announcing only one prefix: 277
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 49883392
Equivalent to 2 /8s, 249 /16s and 41 /24s
Percentage of available LACNIC address space announced: 49.6
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: 3566
Total AfriNIC prefixes after maximum aggregation: 1122
AfriNIC Deaggregation factor: 3.18
Prefixes being announced from the AfriNIC address blocks: 3961
Unique aggregates announced from the AfriNIC address blocks: 1816
AfriNIC Region origin ASes present in the Internet Routing Table: 234
AfriNIC Prefixes per ASN: 16.93
AfriNIC Region origin ASes announcing only one prefix: 81
AfriNIC Region transit ASes present in the Internet Routing Table: 45
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10170880
Equivalent to 0 /8s, 155 /16s and 50 /24s
Percentage of available AfriNIC address space announced: 30.3
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 1619 387 87 Videsh Sanchar Nigam Ltd. Aut
9583 1151 140 16 Sify Limited
9498 1128 550 63 BHARTI BT INTERNET LTD.
17488 1045 67 83 Hathway IP Over Cable Interne
4134 859 12487 319 CHINANET-BACKBONE
4766 850 6005 341 Korea Telecom (KIX)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 586 450 12 BSNL National Internet Backbo
4812 562 969 92 China Telecom (Shanghai)
1221 542 1950 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
7018 1425 5927 1007 AT&T WorldNet Services
2386 1400 658 852 AT&T Data Communications Serv
4323 1395 1028 368 Time Warner Telecom
11492 1220 147 23 Cable One
7011 1080 315 614 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1010 479 107 AppliedTheory Corporation
6197 983 728 477 BellSouth Network Solutions,
174 966 6834 812 Cogent Communications
20115 915 859 508 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 1777 362 TDC Tele Danmark
8452 357 188 7 TEDATA
3301 341 1459 310 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
5462 292 666 26 Telewest Broadband
8551 279 267 42 Bezeq International
3215 278 2671 91 France Telecom Transpac
6746 265 127 243 Dynamic Network Technologies,
680 259 2046 258 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 1187 2447 223 UniNet S.A. de C.V.
11830 555 299 9 Instituto Costarricense de El
7303 452 220 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 409 117 70 Servicios Alestra S.A de C.V
10620 399 104 51 TVCABLE BOGOTA
6471 396 85 39 ENTEL CHILE S.A.
14117 352 25 15 Telefonica del Sur S.A.
22047 322 270 14 VTR PUNTO NET S.A.
10481 310 152 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 454 61 28 LINKdotNET AS number
3741 287 869 223 The Internet Solution
20858 216 34 3 EgyNet
2018 192 276 111 Tertiary Education Network
6713 143 135 11 Itissalat Al-MAGHRIB
33783 131 9 16 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
24835 89 48 7 RAYA Telecom - Egypt
2905 83 176 74 The Internetworking Company o
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 1914 3009 94 bellsouth.net, inc.
23577 1636 34 699 Korea Telecom (ATM-MPLS)
4755 1619 387 87 Videsh Sanchar Nigam Ltd. Aut
7018 1425 5927 1007 AT&T WorldNet Services
2386 1400 658 852 AT&T Data Communications Serv
4323 1395 1028 368 Time Warner Telecom
11492 1220 147 23 Cable One
8151 1187 2447 223 UniNet S.A. de C.V.
9583 1151 140 16 Sify Limited
9498 1128 550 63 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 1619 1532 Videsh Sanchar Nigam Ltd. Aut
11492 1220 1197 Cable One
9583 1151 1135 Sify Limited
9498 1128 1065 BHARTI BT INTERNET LTD.
18566 1044 1034 Covad Communications
4323 1395 1027 Time Warner Telecom
8151 1187 964 UniNet S.A. de C.V.
17488 1045 962 Hathway IP Over Cable Interne
17676 1018 952 Softbank BB Corp.
23577 1636 937 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
26478 UNALLOCATED 8.7.228.0/24 6461 AboveNet Communicati
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 7018 AT&T WorldNet Servic
22492 UNALLOCATED 12.2.46.0/24 1239 Sprint
14984 UNALLOCATED 12.2.192.0/24 7132 SBC Internet Service
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
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 /11:41 /12:137
/13:277 /14:498 /15:998 /16:9816 /17:4309 /18:7279
/19:15266 /20:17540 /21:16747 /22:21305 /23:22298 /24:131261
/25:776 /26:893 /27:484 /28:107 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1206 1220 Cable One
2386 1100 1400 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 986 1151 Sify Limited
4755 962 1619 Videsh Sanchar Nigam Ltd. Aut
7011 962 1080 Citizens Utilities
6478 893 894 AT&T Worldnet Services
17488 860 1045 Hathway IP Over Cable Interne
23577 809 1636 Korea Telecom (ATM-MPLS)
9498 803 1128 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 8:102 12:2000 13:1 15:20 16:3
17:6 18:13 20:35 24:1047 25:1 32:59
33:4 38:407 40:95 41:630 44:2 47:8
52:3 55:3 56:3 57:22 58:508 59:423
60:423 61:978 62:1091 63:1955 64:3360 65:2374
66:3615 67:1092 68:651 69:2112 70:538 71:127
72:1540 73:6 74:900 75:221 76:284 77:617
78:551 79:121 80:887 81:832 82:606 83:370
84:546 85:942 86:395 87:632 88:323 89:1209
90:11 91:1131 92:238 93:167 96:19 97:16
98:108 99:3 116:578 117:281 118:103 119:374
121:468 122:703 123:297 124:830 125:1124 128:324
129:199 130:124 131:406 132:69 133:9 134:188
135:32 136:215 137:119 138:155 139:65 140:482
141:110 142:380 143:279 144:346 145:50 146:337
147:133 148:495 149:180 150:121 151:159 152:142
153:127 154:11 155:268 156:207 157:253 158:170
159:223 160:244 161:110 162:210 163:218 164:565
165:434 166:296 167:314 168:594 169:130 170:426
171:28 172:3 189:166 190:1582 192:5765 193:4090
194:3262 195:2380 196:1024 198:3754 199:3232 200:5479
201:1322 202:7462 203:7745 204:3993 205:2078 206:2408
207:2721 208:3224 209:3468 210:2514 211:1034 212:1330
213:1611 214:454 215:48 216:4280 217:1202 218:349
219:404 220:1065 221:401 222:311
End of report
