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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 27 Apr, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/04/27/0400
Analysis Summary
----------------
BGP routing table entries examined: 218701
Prefixes after maximum aggregation: 116664
Deaggregation factor: 1.87
Unique aggregates announced to Internet: 105049
Total ASes present in the Internet Routing Table: 25039
Prefixes per ASN: 8.73
Origin-only ASes present in the Internet Routing Table: 21811
Origin ASes announcing only one prefix: 10549
Transit ASes present in the Internet Routing Table: 3228
Transit-only ASes present in the Internet Routing Table: 81
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (20858) 18
Prefixes from unregistered ASNs in the Routing Table: 6
Unregistered ASNs in the Routing Table: 8
Prefixes from 32-bit ASNs in the Routing Table: 3
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1714277760
Equivalent to 102 /8s, 45 /16s and 205 /24s
Percentage of available address space announced: 46.3
Percentage of allocated address space announced: 62.8
Percentage of available address space allocated: 73.7
Total number of prefixes smaller than registry allocations: 114255
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50397
Total APNIC prefixes after maximum aggregation: 20202
APNIC Deaggregation factor: 2.49
Prefixes being announced from the APNIC address blocks: 47413
Unique aggregates announced from the APNIC address blocks: 21115
APNIC Region origin ASes present in the Internet Routing Table: 2929
APNIC Prefixes per ASN: 16.19
APNIC Region origin ASes announcing only one prefix: 789
APNIC Region transit ASes present in the Internet Routing Table: 436
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 292363264
Equivalent to 17 /8s, 109 /16s and 28 /24s
Percentage of available APNIC address space announced: 72.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 116/6, 120/6, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 106061
Total ARIN prefixes after maximum aggregation: 61896
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 78074
Unique aggregates announced from the ARIN address blocks: 30371
ARIN Region origin ASes present in the Internet Routing Table: 11526
ARIN Prefixes per ASN: 6.77
ARIN Region origin ASes announcing only one prefix: 4412
ARIN Region transit ASes present in the Internet Routing Table: 1050
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 329668736
Equivalent to 19 /8s, 166 /16s and 88 /24s
Percentage of available ARIN address space announced: 72.8
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, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 44974
Total RIPE prefixes after maximum aggregation: 29426
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 41558
Unique aggregates announced from the RIPE address blocks: 26716
RIPE Region origin ASes present in the Internet Routing Table: 9533
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5038
RIPE Region transit ASes present in the Internet Routing Table: 1535
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 305513472
Equivalent to 18 /8s, 53 /16s and 196 /24s
Percentage of available RIPE address space announced: 75.9
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
40960-44031
RIPE Address Blocks 62/8, 77/8, 78/7, 80/5, 88/6, 92/7, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 14689
Total LACNIC prefixes after maximum aggregation: 4127
LACNIC Deaggregation factor: 3.56
Prefixes being announced from the LACNIC address blocks: 12786
Unique aggregates announced from the LACNIC address blocks: 7102
LACNIC Region origin ASes present in the Internet Routing Table: 781
LACNIC Prefixes per ASN: 16.37
LACNIC Region origin ASes announcing only one prefix: 252
LACNIC Region transit ASes present in the Internet Routing Table: 140
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 38353152
Equivalent to 2 /8s, 73 /16s and 57 /24s
Percentage of available LACNIC address space announced: 57.2
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2572
Total AfriNIC prefixes after maximum aggregation: 1007
AfriNIC Deaggregation factor: 2.55
Prefixes being announced from the AfriNIC address blocks: 1946
Unique aggregates announced from the AfriNIC address blocks: 1182
AfriNIC Region origin ASes present in the Internet Routing Table: 188
AfriNIC Prefixes per ASN: 10.35
AfriNIC Region origin ASes announcing only one prefix: 58
AfriNIC Region transit ASes present in the Internet Routing Table: 38
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 6062592
Equivalent to 0 /8s, 92 /16s and 130 /24s
Percentage of available AfriNIC address space announced: 18.1
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
4134 1278 9505 271 CHINANET-BACKBONE
4755 1202 383 72 Videsh Sanchar Nigam Ltd. Aut
9583 1099 79 381 Sify Limited
9498 974 469 74 BHARTI BT INTERNET LTD.
4766 782 4943 312 Korea Telecom (KIX)
23577 777 35 706 Korea Telecom (ATM-MPLS)
17488 666 43 36 Hathway IP Over Cable Interne
7545 624 142 80 TPG Internet Pty Ltd
1221 582 1957 451 Telstra Pty Ltd
18101 529 116 26 Reliance Infocom Ltd Internet
4668 507 68 10 LG-EDS Systems Inc.
17676 504 10935 65 Softbank BB Corp.
4812 463 811 75 China Telecom (Shanghai)
9443 458 115 74 Primus Telecommunications
7474 402 217 269 SingTel Optus Pty Ltd
17557 359 35 171 Pakistan Telecom
4802 358 86 147 Wantree Development
9829 358 274 14 BSNL National Internet Backbo
17974 346 129 12 PT TELEKOMUNIKASI INDONESIA
4837 344 4724 158 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6126 987 AT&T WorldNet Services
4323 1270 1022 360 Time Warner Telecom
2386 1127 565 757 AT&T Data Communications Serv
6478 1090 336 149 AT&T Worldnet Services
11492 1043 103 21 Cable One
6197 1036 688 503 BellSouth Network Solutions,
18566 1001 288 9 Covad Communications
174 956 6793 869 Cogent Communications
701 931 6658 727 UUNET Technologies, Inc.
20115 822 734 426 Charter Communications
1239 819 2717 576 Sprint
7011 787 226 469 Citizens Utilities
209 727 3748 582 Qwest
19262 724 2587 173 Verizon Global Networks
22773 707 1871 40 Cox Communications, Inc.
721 615 21756 273 DLA Systems Automation Center
5668 595 160 17 CenturyTel Internet Holdings,
852 594 1097 376 Telus Advanced Communications
7029 575 456 81 Alltel Information Services,
855 568 253 71 Canadian Research Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 520 1941 414 UUNET - Commercial IP service
24863 343 47 31 LINKdotNET AS number
3301 309 1455 289 TeliaNet Sweden
3320 302 4993 250 Deutsche Telekom AG
6746 274 95 251 Dynamic Network Technologies,
8220 260 461 251 COLT Telecommunications
680 256 2044 250 DFN-IP service G-WiN
3215 240 2256 92 France Telecom Transpac
8708 237 288 230 Romania Data Systems S.A.
3269 214 2583 72 TELECOM ITALIA
3246 208 341 198 Song Networks
8551 206 196 30 Bezeq International
30890 205 17 95 SC Kappa Invexim SRL
3352 200 1799 33 Ibernet, Internet Access Netw
20858 196 34 4 EgyNet
1257 193 1180 171 SWIPnet Swedish IP Network
9116 188 134 24 Goldenlines main autonomous s
12479 185 578 6 Uni2 Autonomous System
3300 183 171 88 AUCS Communications Services
786 177 1795 177 The JANET IP Service
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1097 1869 211 UniNet S.A. de C.V.
11830 483 299 19 Instituto Costarricense de El
11172 365 116 64 Servicios Alestra S.A de C.V
16814 362 22 8 NSS, S.A.
22047 311 238 12 VTR PUNTO NET S.A.
7303 271 143 28 Telecom Argentina Stet-France
6471 259 74 31 ENTEL CHILE S.A.
14117 242 17 14 Telefonica del Sur S.A.
11556 235 128 3 Cable-Wireless Panama
6147 220 164 24 Telefonica Del Peru
6503 211 171 85 AVANTEL, S.A.
20299 192 23 14 NEWCOM AMERICAS
10620 185 53 23 TVCABLE BOGOTA
10481 181 72 8 Prima S.A.
23216 157 19 42 RAMtelecom Telecomunicaciones
21826 155 27 59 INTERCABLE
7910 153 11 31 ANDINET ON LINE
19429 148 92 39 E.T.B.
14522 146 22 5 SatNet S.A.
19169 142 9 27 Telconet
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 291 868 232 The Internet Solution
8452 225 188 7 TEDATA
6713 143 135 11 Itissalat Al-MAGHRIB
2018 137 309 112 Tertiary Education Network
15475 129 84 4 Nile Online
5536 123 8 15 Internet Egypt Network
33783 117 7 9 EEPAD TISP TELECOM & INTERNET
24835 85 48 6 RAYA Telecom - Egypt
2905 76 174 68 The Internetworking Company o
2561 61 6 2 Egyptian Universities Network
23889 55 16 13 MAURITIUS TELECOM
15706 51 12 4 Sudatel Internet Exchange Aut
5713 44 294 34 Telkom SA Ltd
33774 43 13 24 AS Number for Telecom Algeria
16637 33 21 25 Johnnic e-Ventures
8524 30 2 6 AUCEGYPT Autonomous System
33776 30 2 7 Starcomms Nigeria Limited
33766 29 2 1 Nyala Communications Pty Ltd
21280 26 4 4 Swift Global Kenya Ltd.Is an
10798 24 2 15 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1202 1130 Videsh Sanchar Nigam Ltd. Aut
11492 1043 1022 Cable One
4134 1278 1007 CHINANET-BACKBONE
18566 1001 992 Covad Communications
6478 1090 941 AT&T Worldnet Services
4323 1270 910 Time Warner Telecom
9498 974 900 BHARTI BT INTERNET LTD.
8151 1097 886 UniNet S.A. de C.V.
9583 1099 718 Sify Limited
22773 707 667 Cox Communications, Inc.
17488 666 630 Hathway IP Over Cable Interne
5668 595 578 CenturyTel Internet Holdings,
19262 724 551 Verizon Global Networks
7545 624 544 TPG Internet Pty Ltd
6197 1036 533 BellSouth Network Solutions,
19916 568 517 OLM LLC
18101 529 503 Reliance Infocom Ltd Internet
855 568 497 Canadian Research Network
4668 507 497 LG-EDS Systems Inc.
7029 575 494 Alltel Information Services,
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65332 PRIVATE 63.166.106.192/27 1803 SPRINT
64858 PRIVATE 84.36.180.0/24 20858 EgyNet
64518 PRIVATE 125.18.63.0/24 7633 Software Technology
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
64512 PRIVATE 208.103.63.0/24 32703 Indiana Fiber Networ
22895 UNALLOCATED 216.174.38.0/24 19094 Adelphia Business So
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
7.1.1.0/24 1239 Sprint
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
172.33.1.0/24 7018 AT&T WorldNet Services
192.0.10.0/24 9498 BHARTI BT INTERNET LTD.
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.153.136.0/21 721 DLA Systems Automation Center
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:9 /10:13 /11:34 /12:122
/13:236 /14:448 /15:859 /16:9371 /17:3834 /18:6328
/19:13424 /20:15228 /21:13754 /22:17800 /23:19168 /24:115889
/25:768 /26:834 /27:486 /28:61 /29:6 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1081 1090 AT&T Worldnet Services
11492 1029 1043 Cable One
18566 983 1001 Covad Communications
9583 937 1099 Sify Limited
2386 822 1127 AT&T Data Communications Serv
7018 808 1491 AT&T WorldNet Services
6197 797 1036 BellSouth Network Solutions,
23577 763 777 Korea Telecom (ATM-MPLS)
7011 690 787 Citizens Utilities
9498 637 974 BHARTI BT INTERNET LTD.
4755 596 1202 Videsh Sanchar Nigam Ltd. Aut
4766 588 782 Korea Telecom (KIX)
19916 563 568 OLM LLC
4323 531 1270 Time Warner Telecom
4668 496 507 LG-EDS Systems Inc.
15270 494 527 PaeTec.net -a division of Pae
17488 487 666 Hathway IP Over Cable Interne
8151 474 1097 UniNet S.A. de C.V.
855 466 568 Canadian Research Network
5668 460 595 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 7:1 8:78 9:1 12:1792 15:19
16:3 17:3 18:8 20:37 24:929 25:1
32:53 38:298 40:57 41:124 44:2 47:4
52:4 55:2 56:3 57:26 58:368 59:370
60:267 61:923 62:965 63:1956 64:3112 65:2334
66:3258 67:802 68:639 69:1825 70:506 71:104
72:1269 73:1 74:402 75:257 76:37 77:166
80:852 81:801 82:595 83:371 84:435 85:744
86:372 87:466 88:254 89:782 90:21 91:271
97:6 116:42 121:174 122:523 123:85 124:789
125:934 128:273 129:218 130:121 131:349 132:52
133:10 134:191 135:39 136:180 137:79 138:195
139:64 140:480 141:168 142:370 143:211 144:290
145:43 146:323 147:146 148:397 149:143 150:115
151:145 152:92 153:120 154:4 155:252 156:154
157:183 158:161 159:155 160:104 161:88 162:235
163:146 164:453 165:408 166:234 167:277 168:490
169:120 170:399 171:15 172:1 189:310 190:581
192:5762 193:3788 194:3082 195:2209 196:946 198:3754
199:3295 200:4707 201:958 202:7194 203:7439 204:3941
205:2095 206:2381 207:2913 208:2624 209:3626 210:2468
211:932 212:1301 213:1449 214:411 215:41 216:4006
217:1129 218:354 219:358 220:941 221:396 222:273
End of report
