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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 18 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249164
Prefixes after maximum aggregation: 125468
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 121019
Total ASes present in the Internet Routing Table: 27664
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 24128
Origin ASes announcing only one prefix: 11690
Transit ASes present in the Internet Routing Table: 3536
Transit-only ASes present in the Internet Routing Table: 79
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 48
Unregistered ASNs in the Routing Table: 19
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: 857
Number of addresses announced to Internet: 1845416704
Equivalent to 109 /8s, 254 /16s and 211 /24s
Percentage of available address space announced: 49.8
Percentage of allocated address space announced: 61.1
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: 118339
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56762
Total APNIC prefixes after maximum aggregation: 20896
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 54318
Unique aggregates announced from the APNIC address blocks: 23208
APNIC Region origin ASes present in the Internet Routing Table: 3166
APNIC Prefixes per ASN: 17.16
APNIC Region origin ASes announcing only one prefix: 848
APNIC Region transit ASes present in the Internet Routing Table: 484
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 335823712
Equivalent to 20 /8s, 4 /16s and 67 /24s
Percentage of available APNIC address space announced: 77.0
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: 116501
Total ARIN prefixes after maximum aggregation: 65595
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 85142
Unique aggregates announced from the ARIN address blocks: 33646
ARIN Region origin ASes present in the Internet Routing Table: 12228
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4707
ARIN Region transit ASes present in the Internet Routing Table: 1144
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 359005312
Equivalent to 21 /8s, 101 /16s and 252 /24s
Percentage of available ARIN address space announced: 73.8
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: 53195
Total RIPE prefixes after maximum aggregation: 33087
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48313
Unique aggregates announced from the RIPE address blocks: 32552
RIPE Region origin ASes present in the Internet Routing Table: 11047
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5756
RIPE Region transit ASes present in the Internet Routing Table: 1677
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347536672
Equivalent to 20 /8s, 182 /16s and 253 /24s
Percentage of available RIPE address space announced: 79.7
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
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: 19065
Total LACNIC prefixes after maximum aggregation: 4750
LACNIC Deaggregation factor: 4.01
Prefixes being announced from the LACNIC address blocks: 17401
Unique aggregates announced from the LACNIC address blocks: 9485
LACNIC Region origin ASes present in the Internet Routing Table: 911
LACNIC Prefixes per ASN: 19.10
LACNIC Region origin ASes announcing only one prefix: 301
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: 19
Number of LACNIC addresses announced to Internet: 49736192
Equivalent to 2 /8s, 246 /16s and 234 /24s
Percentage of available LACNIC address space announced: 49.4
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: 3591
Total AfriNIC prefixes after maximum aggregation: 1124
AfriNIC Deaggregation factor: 3.19
Prefixes being announced from the AfriNIC address blocks: 4011
Unique aggregates announced from the AfriNIC address blocks: 1806
AfriNIC Region origin ASes present in the Internet Routing Table: 232
AfriNIC Prefixes per ASN: 17.29
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 43
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10085120
Equivalent to 0 /8s, 153 /16s and 227 /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 1548 381 127 Videsh Sanchar Nigam Ltd. Aut
9583 1151 140 16 Sify Limited
9498 1113 550 66 BHARTI BT INTERNET LTD.
17488 1026 66 79 Hathway IP Over Cable Interne
4134 856 12473 317 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
23577 809 34 694 Korea Telecom (ATM-MPLS)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 594 449 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 1420 5926 1006 AT&T WorldNet Services
4323 1388 1012 365 Time Warner Telecom
2386 1387 656 846 AT&T Data Communications Serv
11492 1215 146 23 Cable One
7011 1046 305 602 Citizens Utilities
18566 1045 296 10 Covad Communications
1785 1006 479 107 AppliedTheory Corporation
6197 990 728 477 BellSouth Network Solutions,
174 963 6835 814 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 395 1776 360 TDC Tele Danmark
8452 383 188 7 TEDATA
3301 340 1443 308 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
680 280 2046 258 DFN-IP service G-WiN
8551 279 267 42 Bezeq International
3215 276 2639 90 France Telecom Transpac
5462 275 666 26 Telewest Broadband
6746 264 127 242 Dynamic Network Technologies,
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 1188 2449 220 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 405 116 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 289 869 223 The Internet Solution
2018 250 276 119 Tertiary Education Network
20858 215 34 3 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 1548 381 127 Videsh Sanchar Nigam Ltd. Aut
7018 1420 5926 1006 AT&T WorldNet Services
4323 1388 1012 365 Time Warner Telecom
2386 1387 656 846 AT&T Data Communications Serv
11492 1215 146 23 Cable One
8151 1188 2449 220 UniNet S.A. de C.V.
9583 1151 140 16 Sify Limited
9498 1113 550 66 BHARTI BT INTERNET LTD.
7011 1046 305 602 Citizens Utilities
18566 1045 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 1215 1192 Cable One
9583 1151 1135 Sify Limited
9498 1113 1047 BHARTI BT INTERNET LTD.
18566 1045 1035 Covad Communications
4323 1388 1023 Time Warner Telecom
8151 1188 968 UniNet S.A. de C.V.
17488 1026 947 Hathway IP Over Cable Interne
1785 1006 899 AppliedTheory Corporation
22773 892 829 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 63.107.123.0/24 701 UUNET Technologies,
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.
65000 PRIVATE 92.62.240.0/20 24750 Cable Internet Syste
64601 PRIVATE 118.232.77.0/24 9924 Taiwan Fixed Network
64601 PRIVATE 118.232.78.0/24 9924 Taiwan Fixed Network
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
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /12:139
/13:278 /14:499 /15:992 /16:9780 /17:4280 /18:7235
/19:15200 /20:17445 /21:16633 /22:21076 /23:22209 /24:130972
/25:763 /26:972 /27:481 /28:109 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1201 1215 Cable One
2386 1088 1387 AT&T Data Communications Serv
18566 1026 1045 Covad Communications
9583 987 1151 Sify Limited
6478 931 932 AT&T Worldnet Services
7011 930 1046 Citizens Utilities
4755 923 1548 Videsh Sanchar Nigam Ltd. Aut
17488 841 1026 Hathway IP Over Cable Interne
23577 800 809 Korea Telecom (ATM-MPLS)
7018 792 1420 AT&T WorldNet Services
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 12:1997 13:2 15:21
16:3 17:6 18:13 20:35 24:1046 25:1
32:60 33:4 38:402 40:95 41:631 44:2
47:8 52:3 55:3 56:3 57:22 58:512
59:419 60:420 61:975 62:1107 63:1968 64:3344
65:2361 66:3609 67:1056 68:646 69:2100 70:513
71:125 72:1525 73:6 74:881 75:236 76:273
77:606 78:527 79:99 80:879 81:837 82:605
83:365 84:540 85:950 86:389 87:633 88:306
89:1202 90:11 91:1104 92:227 93:135 96:18
97:16 98:95 99:2 116:568 117:272 118:82
119:337 121:461 122:714 123:295 124:801 125:1114
128:321 129:201 130:125 131:401 132:69 133:9
134:188 135:32 136:221 137:119 138:154 139:65
140:483 141:109 142:378 143:278 144:341 145:53
146:336 147:132 148:491 149:180 150:121 151:155
152:142 153:133 154:11 155:265 156:207 157:252
158:168 159:220 160:252 161:110 162:202 163:198
164:566 165:429 166:296 167:313 168:592 169:130
170:421 171:28 172:3 189:153 190:1491 192:5774
193:4104 194:3266 195:2353 196:1055 198:3781 199:3224
200:5507 201:1316 202:7547 203:7807 204:4012 205:2102
206:2419 207:2769 208:3221 209:3484 210:2537 211:1037
212:1311 213:1597 214:452 215:48 216:4224 217:1231
218:343 219:393 220:1067 221:402 222:312
End of report
