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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 14 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 248808
Prefixes after maximum aggregation: 125383
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 120877
Total ASes present in the Internet Routing Table: 27617
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 24073
Origin ASes announcing only one prefix: 11656
Transit ASes present in the Internet Routing Table: 3544
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: 21
Max AS path prepend of ASN (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 50
Unregistered ASNs in the Routing Table: 20
Number of 32-bit ASNs allocated by the RIRs: 46
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: 881
Number of addresses announced to Internet: 1842787328
Equivalent to 109 /8s, 214 /16s and 180 /24s
Percentage of available address space announced: 49.7
Percentage of allocated address space announced: 61.0
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 70.8
Total number of prefixes smaller than registry allocations: 118131
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56518
Total APNIC prefixes after maximum aggregation: 20886
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54098
Unique aggregates announced from the APNIC address blocks: 23236
APNIC Region origin ASes present in the Internet Routing Table: 3164
APNIC Prefixes per ASN: 17.10
APNIC Region origin ASes announcing only one prefix: 845
APNIC Region transit ASes present in the Internet Routing Table: 486
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 335203168
Equivalent to 19 /8s, 250 /16s and 203 /24s
Percentage of available APNIC address space announced: 76.8
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: 116368
Total ARIN prefixes after maximum aggregation: 65534
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 85017
Unique aggregates announced from the ARIN address blocks: 33581
ARIN Region origin ASes present in the Internet Routing Table: 12204
ARIN Prefixes per ASN: 6.97
ARIN Region origin ASes announcing only one prefix: 4688
ARIN Region transit ASes present in the Internet Routing Table: 1145
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 357391488
Equivalent to 21 /8s, 77 /16s and 92 /24s
Percentage of available ARIN address space announced: 73.5
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: 53181
Total RIPE prefixes after maximum aggregation: 33061
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48292
Unique aggregates announced from the RIPE address blocks: 32499
RIPE Region origin ASes present in the Internet Routing Table: 11026
RIPE Prefixes per ASN: 4.38
RIPE Region origin ASes announcing only one prefix: 5745
RIPE Region transit ASes present in the Internet Routing Table: 1683
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 347415584
Equivalent to 20 /8s, 181 /16s and 36 /24s
Percentage of available RIPE address space announced: 79.6
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: 19101
Total LACNIC prefixes after maximum aggregation: 4759
LACNIC Deaggregation factor: 4.01
Prefixes being announced from the LACNIC address blocks: 17453
Unique aggregates announced from the LACNIC address blocks: 9461
LACNIC Region origin ASes present in the Internet Routing Table: 912
LACNIC Prefixes per ASN: 19.14
LACNIC Region origin ASes announcing only one prefix: 300
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 49406208
Equivalent to 2 /8s, 241 /16s and 225 /24s
Percentage of available LACNIC address space announced: 49.1
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: 3588
Total AfriNIC prefixes after maximum aggregation: 1127
AfriNIC Deaggregation factor: 3.18
Prefixes being announced from the AfriNIC address blocks: 3995
Unique aggregates announced from the AfriNIC address blocks: 1805
AfriNIC Region origin ASes present in the Internet Routing Table: 232
AfriNIC Prefixes per ASN: 17.22
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 42
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10108416
Equivalent to 0 /8s, 154 /16s and 62 /24s
Percentage of available AfriNIC address space announced: 30.1
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 1549 381 127 Videsh Sanchar Nigam Ltd. Aut
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1148 109 26 Sify Limited
17488 1017 65 82 Hathway IP Over Cable Interne
4134 854 12409 315 CHINANET-BACKBONE
4766 846 6005 340 Korea Telecom (KIX)
23577 815 34 698 Korea Telecom (ATM-MPLS)
18101 675 126 54 Reliance Infocom Ltd Internet
9829 595 449 11 BSNL National Internet Backbo
4812 560 951 90 China Telecom (Shanghai)
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 1428 5944 1004 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1385 638 844 AT&T Data Communications Serv
11492 1213 146 27 Cable One
7011 1066 310 608 Citizens Utilities
18566 1043 296 10 Covad Communications
6197 990 728 477 BellSouth Network Solutions,
1785 985 479 105 AppliedTheory Corporation
174 962 6835 813 Cogent Communications
6478 932 238 111 AT&T Worldnet Services
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 1778 363 TDC Tele Danmark
8452 384 188 7 TEDATA
3301 345 1443 311 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
3215 276 2639 90 France Telecom Transpac
680 275 2046 258 DFN-IP service G-WiN
5462 275 666 26 Telewest Broadband
8708 275 421 245 Romania Data Systems S.A.
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 1191 2449 221 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 451 220 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 406 116 68 Servicios Alestra S.A de C.V
6471 397 85 40 ENTEL CHILE S.A.
10620 372 98 47 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
22047 322 270 14 VTR PUNTO NET S.A.
20299 313 35 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 451 60 27 LINKdotNET AS number
3741 291 869 224 The Internet Solution
2018 252 276 118 Tertiary Education Network
20858 217 34 4 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 130 9 16 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
24835 90 48 7 RAYA Telecom - Egypt
29571 80 13 7 Ci Telecom Autonomous system
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
4755 1549 381 127 Videsh Sanchar Nigam Ltd. Aut
7018 1428 5944 1004 AT&T WorldNet Services
4323 1392 1012 366 Time Warner Telecom
2386 1385 638 844 AT&T Data Communications Serv
11492 1213 146 27 Cable One
8151 1191 2449 221 UniNet S.A. de C.V.
9498 1156 550 66 BHARTI BT INTERNET LTD.
9583 1148 109 26 Sify Limited
7011 1066 310 608 Citizens Utilities
18566 1043 296 10 Covad Communications
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1213 1186 Cable One
9583 1148 1122 Sify Limited
9498 1156 1090 BHARTI BT INTERNET LTD.
18566 1043 1033 Covad Communications
4323 1392 1026 Time Warner Telecom
8151 1191 970 UniNet S.A. de C.V.
17488 1017 935 Hathway IP Over Cable Interne
1785 985 880 AppliedTheory Corporation
22773 891 825 Cox Communications, Inc.
6478 932 821 AT&T Worldnet Services
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
18506 UNALLOCATED 63.107.123.0/24 33286 Turlock Irrigation D
16886 UNALLOCATED 63.109.3.0/24 1239 Sprint
16886 UNALLOCATED 63.167.139.0/24 1239 Sprint
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
65382 PRIVATE 72.158.126.0/24 6381 bellsouth.net, inc.
65383 PRIVATE 72.158.127.0/24 6381 bellsouth.net, inc.
65011 PRIVATE 74.43.150.0/24 7011 Citizens Utilities
65000 PRIVATE 78.108.160.0/24 39010 TerraNet sal
65000 PRIVATE 92.62.240.0/20 24750 Cable Internet Syste
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.48.10.0/23 19548 Adelphia Business Solutions
24.48.12.0/22 19548 Adelphia Business Solutions
24.48.80.0/21 19548 Adelphia Business Solutions
24.54.224.0/19 20001 HoldCo LLC - Road Runner
24.75.192.0/18 19548 Adelphia Business Solutions
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
41.207.64.0/24 36915 Africa Online Kenya
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 /11:39 /12:138
/13:278 /14:497 /15:991 /16:9775 /17:4270 /18:7230
/19:15178 /20:17408 /21:16580 /22:21056 /23:22191 /24:130766
/25:769 /26:981 /27:491 /28:108 /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 1089 1385 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 985 1148 Sify Limited
7011 948 1066 Citizens Utilities
6478 931 932 AT&T Worldnet Services
4755 922 1549 Videsh Sanchar Nigam Ltd. Aut
17488 832 1017 Hathway IP Over Cable Interne
9498 818 1156 BHARTI BT INTERNET LTD.
23577 806 815 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:100 11:1 12:1998 13:2 15:21
16:3 17:6 18:13 20:35 24:1042 25:1
32:61 33:4 38:402 40:95 41:627 44:2
46:5 47:8 52:3 55:3 56:3 57:22
58:510 59:420 60:418 61:983 62:1116 63:1969
64:3346 65:2362 66:3620 67:1038 68:646 69:2104
70:512 71:126 72:1495 73:6 74:876 75:234
76:274 77:597 78:521 79:99 80:881 81:845
82:611 83:371 84:542 85:946 86:393 87:632
88:301 89:1201 90:11 91:1095 92:225 93:135
96:18 97:15 98:95 99:2 116:553 117:274
118:82 119:235 121:461 122:716 123:292 124:803
125:1125 128:322 129:201 130:125 131:401 132:69
133:9 134:188 135:32 136:222 137:119 138:155
139:65 140:490 141:109 142:378 143:272 144:343
145:53 146:334 147:132 148:498 149:180 150:121
151:155 152:142 153:133 154:11 155:267 156:207
157:253 158:165 159:220 160:251 161:100 162:204
163:195 164:553 165:430 166:296 167:311 168:591
169:130 170:426 171:29 172:3 189:155 190:1492
192:5775 193:4107 194:3262 195:2357 196:1073 198:3782
199:3221 200:5512 201:1316 202:7585 203:7738 204:4010
205:2091 206:2421 207:2764 208:3218 209:3488 210:2534
211:1027 212:1309 213:1603 214:448 215:48 216:4209
217:1223 218:341 219:389 220:1068 221:401 222:311
End of report
