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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 27 Apr, 2006
Analysis Summary
----------------
BGP routing table entries examined: 187538
Prefixes after maximum aggregation: 103448
Unique aggregates announced to Internet: 91637
Total ASes present in the Internet Routing Table: 22003
Origin-only ASes present in the Internet Routing Table: 19146
Origin ASes announcing only one prefix: 9097
Transit ASes present in the Internet Routing Table: 2857
Transit-only ASes present in the Internet Routing Table: 61
Average AS path length visible in the Internet Routing Table: 3.5
Max AS path length visible: 25
Prefixes from unregistered ASNs in the Routing Table: 3
Unregistered ASNs in the Routing Table: 4
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1511403424
Equivalent to 90 /8s, 22 /16s and 47 /24s
Percentage of available address space announced: 40.8
Percentage of allocated address space announced: 60.2
Percentage of available address space allocated: 67.8
Total number of prefixes smaller than registry allocations: 92499
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 39376
Total APNIC prefixes after maximum aggregation: 16476
Prefixes being announced from the APNIC address blocks: 37081
Unique aggregates announced from the APNIC address blocks: 18224
APNIC Region origin ASes present in the Internet Routing Table: 2543
APNIC Region origin ASes announcing only one prefix: 714
APNIC Region transit ASes present in the Internet Routing Table: 390
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 222658784
Equivalent to 13 /8s, 69 /16s and 128 /24s
Percentage of available APNIC address space announced: 69.6
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, 121/8, 122/7, 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: 97401
Total ARIN prefixes after maximum aggregation: 57566
Prefixes being announced from the ARIN address blocks: 76458
Unique aggregates announced from the ARIN address blocks: 29457
ARIN Region origin ASes present in the Internet Routing Table: 10651
ARIN Region origin ASes announcing only one prefix: 3986
ARIN Region transit ASes present in the Internet Routing Table: 981
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 296259072
Equivalent to 17 /8s, 168 /16s and 142 /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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 37432
Total RIPE prefixes after maximum aggregation: 24898
Prefixes being announced from the RIPE address blocks: 34470
Unique aggregates announced from the RIPE address blocks: 23128
RIPE Region origin ASes present in the Internet Routing Table: 7915
RIPE Region origin ASes announcing only one prefix: 4130
RIPE Region transit ASes present in the Internet Routing Table: 1301
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 246628288
Equivalent to 14 /8s, 179 /16s and 63 /24s
Percentage of available RIPE address space announced: 73.5
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
RIPE Address Blocks 62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 11202
Total LACNIC prefixes after maximum aggregation: 3619
Prefixes being announced from the LACNIC address blocks: 9312
Unique aggregates announced from the LACNIC address blocks: 5414
LACNIC Region origin ASes present in the Internet Routing Table: 681
LACNIC Region origin ASes announcing only one prefix: 221
LACNIC Region transit ASes present in the Internet Routing Table: 127
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 26554624
Equivalent to 1 /8s, 149 /16s and 49 /24s
Percentage of available LACNIC address space announced: 39.6
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: 2124
Total AfriNIC prefixes after maximum aggregation: 889
Prefixes being announced from the AfriNIC address blocks: 1453
Unique aggregates announced from the AfriNIC address blocks: 946
AfriNIC Region origin ASes present in the Internet Routing Table: 153
AfriNIC Region origin ASes announcing only one prefix: 46
AfriNIC Region transit ASes present in the Internet Routing Table: 26
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 4045312
Equivalent to 0 /8s, 61 /16s and 186 /24s
Percentage of available AfriNIC address space announced: 12.1
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 1094 7073 221 CHINANET-BACKBONE
9583 893 109 16 Sify Limited
4755 767 257 66 Videsh Sanchar Nigam Ltd. Aut
4766 678 4435 305 Korea Telecom (KIX)
1221 617 1556 472 Telstra Pty Ltd
9498 571 212 72 BHARTI BT INTERNET LTD.
7545 526 108 69 TPG Internet Pty Ltd
17488 501 31 7 Hathway IP Over Cable Interne
17676 486 7029 108 Softbank BB Corp.
9443 450 110 81 Primus Telecommunications
4802 381 81 175 Wantree Development
17849 345 22 113 Telecommunications Technology
18101 340 69 18 Reliance Infocom Ltd Internet
2907 336 1749 312 SINET Japan
17557 326 27 158 Pakistan Telecom
9929 322 221 57 China Netcom Corp.
17974 307 120 26 PT TELEKOMUNIKASI INDONESIA
7474 300 211 230 SingTel Optus Pty Ltd
9800 272 410 67 CHINA UNICOM
9837 263 77 161 Powertel Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1503 6252 978 AT&T WorldNet Services
4323 1290 732 252 Time Warner Telecom
6197 1007 618 471 BellSouth Network Solutions,
721 1006 21945 304 DLA Systems Automation Center
174 960 5787 908 Cogent Communications
19029 953 151 111 New Edge Networks
701 937 8031 778 UUNET Technologies, Inc.
18566 935 272 8 Covad Communications
2386 881 537 673 AT&T Data Communications Serv
1239 849 2804 601 Sprint
209 717 3616 559 Qwest
19262 690 2017 161 Verizon Global Networks
20115 679 595 361 Charter Communications
22773 654 1737 44 Cox Communications, Inc.
7011 631 217 412 Citizens Utilities
11492 628 86 20 Cable One
852 581 1085 385 Telus Advanced Communications
19916 563 49 54 OLM LLC
855 550 244 63 Canadian Research Network
3602 537 127 109 Sprint Canada, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 582 1951 458 UUNET - Commercial IP service
3352 310 1612 29 Ibernet, Internet Access Netw
3301 307 1071 292 TeliaNet Sweden
3215 304 1662 93 France Telecom Transpac
8220 290 474 268 COLT Telecommunications
3320 289 3989 239 Deutsche Telekom AG
680 245 2025 242 DFN-IP service G-WiN
3246 232 504 222 Song Networks
6746 228 89 202 Dynamic Network Technologies,
8708 218 276 201 Romania Data Systems S.A.
24863 207 40 9 LINKdotNET AS number
8551 202 198 24 Bezeq International
1257 196 742 170 SWIPnet Swedish IP Network
3269 195 2070 74 TELECOM ITALIA
8866 177 37 15 Bulgarian Telecommunication C
786 171 1778 171 The JANET IP Service
5400 171 363 140 BT Ignite European Backbone
9121 168 931 27 TTnet Autonomous System
6830 167 765 35 UPC Distribution Services
30890 163 15 61 SC Kappa Invexim SRL
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 699 1066 226 UniNet S.A. de C.V.
22047 408 158 11 VTR PUNTO NET S.A.
11172 323 110 84 Servicios Alestra S.A de C.V
16814 315 20 8 NSS, S.A.
6147 261 124 23 Telefonica Del Peru
14117 205 12 6 Telefonica del Sur S.A.
10481 181 72 8 Prima S.A.
7303 159 75 17 Telecom Argentina Stet-France
5639 132 12 9 Telecommunications Services o
11556 132 80 4 Cable-Wireless Panama
21826 132 16 19 INTERCABLE
6503 126 149 79 AVANTEL, S.A.
19169 125 8 28 Telconet
14259 114 10 12 GTD Internet S.A.
23216 108 21 9 RAMtelecom Telecomunicaciones
6505 106 88 78 Global One Communicaoes Ltda
7910 105 7 10 ANDINET ON LINE
19429 102 57 43 E.T.B.
14522 99 13 7 SatNet S.A.
18822 97 6 8 TELEFONICA MANQUEHUE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 278 803 233 The Internet Solution
8452 170 60 7 TEDATA
6713 145 135 11 Itissalat Al-MAGHRIB
2018 123 314 104 Tertiary Education Network
5536 121 8 18 Internet Egypt Network
24835 118 50 7 RAYA Telecom - Egypt
33783 105 6 2 EEPAD TISP TELECOM & INTERNET
2905 72 155 65 The Internetworking Company o
15475 65 84 4 Nile Online
20928 57 16 2 Noor Advanced Technologies AS
5713 39 294 35 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
33774 30 7 20 AS Number for Telecom Algeria
23889 26 8 11 MAURITIUS TELECOM
8524 24 1 4 AUCEGYPT Autonomous System
12455 24 5 4 Jambonet Autonomous system
16637 24 14 22 Johnnic e-Ventures
10798 22 1 13 Standard Bank of South Africa
2561 19 6 2 Egyptian Universities Network
21491 19 17 2 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1290 1038 Time Warner Telecom
18566 935 927 Covad Communications
9583 893 877 Sify Limited
4134 1094 873 CHINANET-BACKBONE
19029 953 842 New Edge Networks
721 1006 702 DLA Systems Automation Center
4755 767 701 Videsh Sanchar Nigam Ltd. Aut
22773 654 610 Cox Communications, Inc.
11492 628 608 Cable One
6197 1007 536 BellSouth Network Solutions,
19262 690 529 Verizon Global Networks
19916 563 509 OLM LLC
5668 533 503 CenturyTel Internet Holdings,
9498 571 499 BHARTI BT INTERNET LTD.
17488 501 494 Hathway IP Over Cable Interne
855 550 487 Canadian Research Network
8151 699 473 UniNet S.A. de C.V.
7757 477 458 AT&T Broadband
7545 526 457 TPG Internet Pty Ltd
3602 537 428 Sprint Canada, Inc.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65241 PRIVATE 65.90.71.0/24 10794 Bank of America
65005 PRIVATE 159.153.148.0/22 24989 IX Europe Frankfurt
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
121.128.0.0/11 4766 Korea Telecom (KIX)
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
183.206.196.0/24 2188 FR-RENATER-ASTER
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
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
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 /8:17 /9:9 /10:9 /11:28 /12:88
/13:198 /14:360 /15:699 /16:8808 /17:3184 /18:5243
/19:11586 /20:13069 /21:11301 /22:14493 /23:15564 /24:101814
/25:381 /26:267 /27:221 /28:63 /29:70 /30:35
/31:0 /32:31
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 918 935 Covad Communications
19029 884 953 New Edge Networks
7018 797 1503 AT&T WorldNet Services
6197 796 1007 BellSouth Network Solutions,
9583 722 893 Sify Limited
4323 632 1290 Time Warner Telecom
11492 619 628 Cable One
2386 601 881 AT&T Data Communications Serv
19916 557 563 OLM LLC
7011 540 631 Citizens Utilities
4766 488 678 Korea Telecom (KIX)
7757 459 477 AT&T Broadband
855 425 550 Canadian Research Network
5668 414 533 CenturyTel Internet Holdings,
1239 381 849 Sprint
15270 375 406 PaeTec.net -a division of Pae
702 362 582 UUNET - Commercial IP service
6198 356 505 BellSouth Network Solutions,
6517 355 385 Yipes Communications, Inc.
17849 345 345 Telecommunications Technology
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 8:40 12:1631 13:1 15:12 16:3
17:3 18:4 20:43 24:884 25:1 30:2
32:58 38:209 40:54 41:1 44:3 47:6
52:4 55:1 56:3 57:31 58:147 59:183
60:181 61:813 62:760 63:1929 64:3156 65:2201
66:3101 67:596 68:674 69:1486 70:327 71:77
72:675 73:23 74:29 80:846 81:633 82:598
83:377 84:382 85:528 86:386 87:318 88:74
89:153 124:255 125:371 128:166 129:181 130:107
131:320 132:31 133:8 134:156 135:46 136:178
137:70 138:198 139:67 140:464 141:133 142:386
143:162 144:225 145:43 146:324 147:138 148:326
149:186 150:114 151:81 152:64 153:107 154:6
155:196 156:97 157:142 158:169 159:167 160:87
161:73 162:252 163:145 164:179 165:195 166:162
167:246 168:483 169:134 170:331 171:13 172:1
183:1 190:57 192:5764 193:3407 194:2589 195:1833
196:848 198:3907 199:3244 200:4432 201:913 202:6601
203:6823 204:3881 205:2095 206:2419 207:2938 208:2054
209:3792 210:1916 211:694 212:1248 213:1459 214:345
215:41 216:4094 217:1181 218:264 219:181 220:653
221:358 222:148
End of report
