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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 21 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255742
Prefixes after maximum aggregation: 127362
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124089
Total ASes present in the Internet Routing Table: 28248
Prefixes per ASN: 9.05
Origin-only ASes present in the Internet Routing Table: 24627
Origin ASes announcing only one prefix: 11845
Transit ASes present in the Internet Routing Table: 3621
Transit-only ASes present in the Internet Routing Table: 85
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: 604
Unregistered ASNs in the Routing Table: 220
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: 788
Number of addresses announced to Internet: 1868752544
Equivalent to 111 /8s, 98 /16s and 230 /24s
Percentage of available address space announced: 50.4
Percentage of allocated address space announced: 61.9
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.9
Total number of prefixes smaller than registry allocations: 123226
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 58742
Total APNIC prefixes after maximum aggregation: 21584
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 55782
Unique aggregates announced from the APNIC address blocks: 23815
APNIC Region origin ASes present in the Internet Routing Table: 3241
APNIC Prefixes per ASN: 17.21
APNIC Region origin ASes announcing only one prefix: 848
APNIC Region transit ASes present in the Internet Routing Table: 500
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 349197280
Equivalent to 20 /8s, 208 /16s and 83 /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: 117309
Total ARIN prefixes after maximum aggregation: 65247
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 86994
Unique aggregates announced from the ARIN address blocks: 34198
ARIN Region origin ASes present in the Internet Routing Table: 12176
ARIN Prefixes per ASN: 7.14
ARIN Region origin ASes announcing only one prefix: 4688
ARIN Region transit ASes present in the Internet Routing Table: 1138
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 356784000
Equivalent to 21 /8s, 68 /16s and 23 /24s
Percentage of available ARIN address space announced: 73.3
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: 55209
Total RIPE prefixes after maximum aggregation: 33746
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50392
Unique aggregates announced from the RIPE address blocks: 33753
RIPE Region origin ASes present in the Internet Routing Table: 11346
RIPE Prefixes per ASN: 4.44
RIPE Region origin ASes announcing only one prefix: 5923
RIPE Region transit ASes present in the Internet Routing Table: 1717
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 357841280
Equivalent to 21 /8s, 84 /16s and 57 /24s
Percentage of available RIPE address space announced: 82.0
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: 20017
Total LACNIC prefixes after maximum aggregation: 5091
LACNIC Deaggregation factor: 3.93
Prefixes being announced from the LACNIC address blocks: 18368
Unique aggregates announced from the LACNIC address blocks: 10084
LACNIC Region origin ASes present in the Internet Routing Table: 946
LACNIC Prefixes per ASN: 19.42
LACNIC Region origin ASes announcing only one prefix: 311
LACNIC Region transit ASes present in the Internet Routing Table: 158
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 51305472
Equivalent to 3 /8s, 14 /16s and 220 /24s
Percentage of available LACNIC address space announced: 51.0
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: 3866
Total AfriNIC prefixes after maximum aggregation: 1194
AfriNIC Deaggregation factor: 3.24
Prefixes being announced from the AfriNIC address blocks: 4191
Unique aggregates announced from the AfriNIC address blocks: 1855
AfriNIC Region origin ASes present in the Internet Routing Table: 240
AfriNIC Prefixes per ASN: 17.46
AfriNIC Region origin ASes announcing only one prefix: 75
AfriNIC Region transit ASes present in the Internet Routing Table: 47
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12233984
Equivalent to 0 /8s, 186 /16s and 173 /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 1174 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 855 12661 319 CHINANET-BACKBONE
4766 847 6006 343 Korea Telecom (KIX)
23577 823 34 703 Korea Telecom (ATM-MPLS)
18101 680 149 51 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 545 1918 419 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 1855 3045 168 bellsouth.net, inc.
4323 1429 1030 378 Time Warner Telecom
2386 1411 643 871 AT&T Data Communications Serv
7018 1385 5972 987 AT&T WorldNet Services
11492 1221 148 14 Cable One
7011 1088 302 617 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1021 510 105 AppliedTheory Corporation
6197 987 597 507 BellSouth Network Solutions,
174 963 6836 802 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 409 1788 369 TDC Tele Danmark
9198 394 74 9 Kazakhtelecom Data Network Ad
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 291 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 279 2686 90 France Telecom Transpac
680 275 2047 265 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 1219 2464 229 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
7303 460 225 66 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 409 117 67 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
22047 358 270 14 VTR PUNTO NET 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 473 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 143 135 11 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 1855 3045 168 bellsouth.net, inc.
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1429 1030 378 Time Warner Telecom
2386 1411 643 871 AT&T Data Communications Serv
7018 1385 5972 987 AT&T WorldNet Services
11492 1221 148 14 Cable One
8151 1219 2464 229 UniNet S.A. de C.V.
9498 1174 550 61 BHARTI BT INTERNET LTD.
9583 1149 140 15 Sify Limited
7011 1088 302 617 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 1221 1207 Cable One
9583 1149 1134 Sify Limited
9498 1174 1113 BHARTI BT INTERNET LTD.
4323 1429 1051 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1219 990 UniNet S.A. de C.V.
17488 1064 988 Hathway IP Over Cable Interne
1785 1021 916 AppliedTheory Corporation
22773 946 884 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
/13:281 /14:511 /15:1005 /16:9905 /17:4365 /18:7276
/19:15429 /20:17877 /21:17340 /22:21694 /23:22707 /24:134814
/25:789 /26:928 /27:493 /28:82 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1204 1221 Cable One
6389 1142 1855 bellsouth.net, inc.
2386 1111 1411 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
17488 877 1064 Hathway IP Over Cable Interne
6478 866 867 AT&T Worldnet Services
9498 848 1174 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 12:2042 13:1 15:20 16:3
17:5 18:13 20:35 24:1070 25:1 32:61
33:3 38:422 40:93 41:661 44:2 47:12
52:3 55:3 56:3 57:23 58:508 59:462
60:442 61:981 62:1114 63:1950 64:3374 65:2418
66:3651 67:1190 68:676 69:2237 70:630 71:114
72:1750 73:5 74:969 75:212 76:305 77:663
78:618 79:153 80:900 81:863 82:612 83:391
84:567 85:1011 86:411 87:644 88:336 89:1281
90:11 91:1230 92:269 93:450 96:31 97:17
98:167 99:3 114:4 116:636 117:323 118:131
119:421 120:37 121:532 122:765 123:344 124:850
125:1132 128:325 129:200 130:130 131:405 132:66
133:9 134:174 135:33 136:220 137:88 138:146
139:64 140:484 141:98 142:401 143:300 144:359
145:50 146:364 147:152 148:496 149:183 150:103
151:182 152:141 153:134 154:10 155:272 156:174
157:271 158:163 159:221 160:255 161:113 162:212
163:186 164:522 165:447 166:305 167:322 168:621
169:125 170:425 171:28 172:22 189:165 190:2013
192:5784 193:4105 194:3219 195:2440 196:1066 198:3736
199:3242 200:5584 201:1396 202:7592 203:7842 204:3999
205:2079 206:2398 207:2759 208:3331 209:3428 210:2497
211:1053 212:1385 213:1627 214:472 215:50 216:4345
217:1201 218:357 219:416 220:1076 221:469 222:303
End of report
