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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 25 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 256078
Prefixes after maximum aggregation: 127260
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124335
Total ASes present in the Internet Routing Table: 28257
Prefixes per ASN: 9.06
Origin-only ASes present in the Internet Routing Table: 24645
Origin ASes announcing only one prefix: 11862
Transit ASes present in the Internet Routing Table: 3612
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: 18
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 602
Unregistered ASNs in the Routing Table: 220
Number of 32-bit ASNs allocated by the RIRs: 48
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: 782
Number of addresses announced to Internet: 1870559168
Equivalent to 111 /8s, 126 /16s and 119 /24s
Percentage of available address space announced: 50.5
Percentage of allocated address space announced: 62.0
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 72.0
Total number of prefixes smaller than registry allocations: 123382
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 58746
Total APNIC prefixes after maximum aggregation: 21624
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 55779
Unique aggregates announced from the APNIC address blocks: 23888
APNIC Region origin ASes present in the Internet Routing Table: 3238
APNIC Prefixes per ASN: 17.23
APNIC Region origin ASes announcing only one prefix: 849
APNIC Region transit ASes present in the Internet Routing Table: 500
Average APNIC Region AS path length visible: 3.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 349358560
Equivalent to 20 /8s, 210 /16s and 201 /24s
Percentage of available APNIC address space announced: 80.1
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: 117715
Total ARIN prefixes after maximum aggregation: 65079
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 87288
Unique aggregates announced from the ARIN address blocks: 34285
ARIN Region origin ASes present in the Internet Routing Table: 12187
ARIN Prefixes per ASN: 7.16
ARIN Region origin ASes announcing only one prefix: 4696
ARIN Region transit ASes present in the Internet Routing Table: 1130
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357890688
Equivalent to 21 /8s, 84 /16s and 250 /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: 55107
Total RIPE prefixes after maximum aggregation: 33792
RIPE Deaggregation factor: 1.63
Prefixes being announced from the RIPE address blocks: 50282
Unique aggregates announced from the RIPE address blocks: 33857
RIPE Region origin ASes present in the Internet Routing Table: 11353
RIPE Prefixes per ASN: 4.43
RIPE Region origin ASes announcing only one prefix: 5927
RIPE Region transit ASes present in the Internet Routing Table: 1714
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 358045568
Equivalent to 21 /8s, 87 /16s and 87 /24s
Percentage of available RIPE address space announced: 82.1
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: 20052
Total LACNIC prefixes after maximum aggregation: 5069
LACNIC Deaggregation factor: 3.96
Prefixes being announced from the LACNIC address blocks: 18418
Unique aggregates announced from the LACNIC address blocks: 10090
LACNIC Region origin ASes present in the Internet Routing Table: 946
LACNIC Prefixes per ASN: 19.47
LACNIC Region origin ASes announcing only one prefix: 314
LACNIC Region transit ASes present in the Internet Routing Table: 157
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 51623168
Equivalent to 3 /8s, 19 /16s and 181 /24s
Percentage of available LACNIC address space announced: 51.3
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: 3861
Total AfriNIC prefixes after maximum aggregation: 1198
AfriNIC Deaggregation factor: 3.22
Prefixes being announced from the AfriNIC address blocks: 4168
Unique aggregates announced from the AfriNIC address blocks: 1842
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.29
AfriNIC Region origin ASes announcing only one prefix: 76
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12242688
Equivalent to 0 /8s, 186 /16s and 207 /24s
Percentage of available AfriNIC address space announced: 36.5
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 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1156 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 853 12659 318 CHINANET-BACKBONE
4766 849 6006 343 Korea Telecom (KIX)
23577 823 34 703 Korea Telecom (ATM-MPLS)
18101 681 149 51 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 546 1919 420 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
6389 1993 3087 178 bellsouth.net, inc.
4323 1465 1045 379 Time Warner Telecom
2386 1435 659 872 AT&T Data Communications Serv
7018 1380 5958 983 AT&T WorldNet Services
11492 1223 148 11 Cable One
7011 1088 302 616 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1021 510 105 AppliedTheory Corporation
6197 984 597 509 BellSouth Network Solutions,
174 970 6837 806 Cogent 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 408 1788 369 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 337 1458 305 TeliaNet Sweden
3320 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 291 666 26 Telewest Broadband
3215 284 2702 93 France Telecom Transpac
8551 282 269 37 Bezeq International
680 275 2047 265 DFN-IP service G-WiN
9155 267 46 11 QualityNet AS number
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 1227 2464 227 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 565 270 14 VTR PUNTO NET S.A.
7303 460 225 66 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 414 85 46 ENTEL CHILE S.A.
11172 410 117 67 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 330 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 472 61 28 LINKdotNET AS number
3741 286 853 223 The Internet Solution
20858 223 34 3 EgyNet
2018 182 173 82 Tertiary Education Network
5713 174 575 108 Telkom SA Ltd
6713 145 136 12 Itissalat Al-MAGHRIB
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 100 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 1993 3087 178 bellsouth.net, inc.
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1465 1045 379 Time Warner Telecom
2386 1435 659 872 AT&T Data Communications Serv
7018 1380 5958 983 AT&T WorldNet Services
8151 1227 2464 227 UniNet S.A. de C.V.
11492 1223 148 11 Cable One
9498 1156 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
7011 1088 302 616 Citizens Utilities
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1639 1548 Videsh Sanchar Nigam Ltd. Aut
11492 1223 1212 Cable One
9583 1149 1134 Sify Limited
9498 1156 1095 BHARTI BT INTERNET LTD.
4323 1465 1086 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1227 1000 UniNet S.A. de C.V.
17488 1064 988 Hathway IP Over Cable Interne
1785 1021 916 AppliedTheory Corporation
22773 945 883 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
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 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.31.25.0/24 6517 Yipes Communications
27220 UNALLOCATED 12.35.204.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
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 /11:42 /12:141
/13:282 /14:513 /15:1009 /16:9913 /17:4366 /18:7282
/19:15454 /20:17898 /21:17390 /22:21769 /23:22791 /24:134891
/25:779 /26:921 /27:496 /28:78 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 1229 1993 bellsouth.net, inc.
11492 1205 1223 Cable One
2386 1134 1435 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 987 1149 Sify Limited
4755 985 1639 Videsh Sanchar Nigam Ltd. Aut
7011 972 1088 Citizens Utilities
6478 951 952 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 839 1156 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 8:107 12:2052 13:1 15:20 16:3
17:5 18:13 20:35 24:1074 25:1 32:61
33:3 38:424 40:93 41:639 44:2 47:12
52:3 55:3 56:3 57:23 58:511 59:466
60:442 61:997 62:1109 63:1953 64:3396 65:2414
66:3652 67:1198 68:681 69:2242 70:631 71:125
72:1759 73:5 74:973 75:216 76:307 77:661
78:616 79:168 80:896 81:849 82:583 83:393
84:566 85:1020 86:415 87:653 88:322 89:1223
90:11 91:1233 92:192 93:494 96:31 97:18
98:172 99:3 114:13 116:642 117:323 118:132
119:424 120:37 121:528 122:768 123:345 124:840
125:1129 128:325 129:200 130:131 131:403 132:66
133:9 134:178 135:33 136:220 137:90 138:151
139:68 140:482 141:99 142:400 143:300 144:352
145:50 146:362 147:152 148:487 149:183 150:131
151:192 152:141 153:134 154:10 155:273 156:174
157:271 158:163 159:221 160:257 161:112 162:227
163:184 164:524 165:448 166:309 167:322 168:600
169:131 170:426 171:28 172:10 189:168 190:2006
192:5780 193:4098 194:3204 195:2437 196:1065 198:3740
199:3259 200:5619 201:1423 202:7599 203:7844 204:3996
205:2075 206:2400 207:2766 208:3338 209:3426 210:2497
211:1047 212:1389 213:1636 214:471 215:49 216:4355
217:1188 218:353 219:416 220:1080 221:466 222:309
End of report
