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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 28 Apr, 2006
Analysis Summary
----------------
BGP routing table entries examined: 187519
Prefixes after maximum aggregation: 103513
Unique aggregates announced to Internet: 91692
Total ASes present in the Internet Routing Table: 22010
Origin-only ASes present in the Internet Routing Table: 19150
Origin ASes announcing only one prefix: 9105
Transit ASes present in the Internet Routing Table: 2860
Transit-only ASes present in the Internet Routing Table: 63
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: 2
Unregistered ASNs in the Routing Table: 3
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 1528718752
Equivalent to 91 /8s, 30 /16s and 101 /24s
Percentage of available address space announced: 41.2
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 69.1
Total number of prefixes smaller than registry allocations: 92467
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 39402
Total APNIC prefixes after maximum aggregation: 16501
Prefixes being announced from the APNIC address blocks: 37105
Unique aggregates announced from the APNIC address blocks: 18238
APNIC Region origin ASes present in the Internet Routing Table: 2543
APNIC Region origin ASes announcing only one prefix: 713
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: 15
Number of APNIC addresses announced to Internet: 224864736
Equivalent to 13 /8s, 103 /16s and 41 /24s
Percentage of available APNIC address space announced: 70.3
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: 97395
Total ARIN prefixes after maximum aggregation: 57554
Prefixes being announced from the ARIN address blocks: 71566
Unique aggregates announced from the ARIN address blocks: 26256
ARIN Region origin ASes present in the Internet Routing Table: 10650
ARIN Region origin ASes announcing only one prefix: 3983
ARIN Region transit ASes present in the Internet Routing Table: 989
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 287091200
Equivalent to 17 /8s, 28 /16s and 170 /24s
Percentage of available ARIN address space announced: 74.4
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, 64/5, 72/6, 76/8, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 37342
Total RIPE prefixes after maximum aggregation: 24935
Prefixes being announced from the RIPE address blocks: 34365
Unique aggregates announced from the RIPE address blocks: 23115
RIPE Region origin ASes present in the Internet Routing Table: 7920
RIPE Region origin ASes announcing only one prefix: 4141
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: 18
Number of RIPE addresses announced to Internet: 246701760
Equivalent to 14 /8s, 180 /16s and 94 /24s
Percentage of available RIPE address space announced: 77.4
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, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 11249
Total LACNIC prefixes after maximum aggregation: 3631
Prefixes being announced from the LACNIC address blocks: 9335
Unique aggregates announced from the LACNIC address blocks: 5419
LACNIC Region origin ASes present in the Internet Routing Table: 681
LACNIC Region origin ASes announcing only one prefix: 222
LACNIC Region transit ASes present in the Internet Routing Table: 126
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 26692608
Equivalent to 1 /8s, 151 /16s and 76 /24s
Percentage of available LACNIC address space announced: 39.8
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: 2129
Total AfriNIC prefixes after maximum aggregation: 892
Prefixes being announced from the AfriNIC address blocks: 1463
Unique aggregates announced from the AfriNIC address blocks: 947
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: 4061440
Equivalent to 0 /8s, 61 /16s and 249 /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 1096 7073 221 CHINANET-BACKBONE
9583 896 109 16 Sify Limited
4755 767 257 66 Videsh Sanchar Nigam Ltd. Aut
4766 679 4435 306 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 382 81 176 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 28 PT TELEKOMUNIKASI INDONESIA
7474 300 211 230 SingTel Optus Pty Ltd
9800 274 410 67 CHINA UNICOM
9837 265 78 158 Powertel Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1504 6253 975 AT&T WorldNet Services
4323 1290 732 252 Time Warner Telecom
6197 1008 618 472 BellSouth Network Solutions,
721 1002 21945 303 DLA Systems Automation Center
174 960 5787 908 Cogent Communications
19029 953 151 111 New Edge Networks
701 935 8031 776 UUNET Technologies, Inc.
18566 935 272 8 Covad Communications
2386 880 537 672 AT&T Data Communications Serv
1239 845 2804 598 Sprint
209 718 3616 560 Qwest
19262 690 2017 161 Verizon Global Networks
20115 680 595 362 Charter Communications
22773 654 1737 44 Cox Communications, Inc.
7011 632 217 413 Citizens Utilities
11492 629 86 20 Cable One
852 582 1085 384 Telus Advanced Communications
19916 563 49 54 OLM LLC
855 550 244 63 Canadian Research Network
3602 536 127 109 Sprint Canada, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 581 1951 457 UUNET - Commercial IP service
3352 310 1612 29 Ibernet, Internet Access Netw
3301 307 1055 292 TeliaNet Sweden
3320 289 3989 239 Deutsche Telekom AG
8220 289 474 267 COLT Telecommunications
680 245 2025 242 DFN-IP service G-WiN
3246 232 504 222 Song Networks
6746 225 88 200 Dynamic Network Technologies,
8708 218 276 201 Romania Data Systems S.A.
24863 208 40 9 LINKdotNET AS number
8551 202 198 24 Bezeq International
1257 196 742 170 SWIPnet Swedish IP Network
3215 196 1662 93 France Telecom Transpac
3269 196 2070 73 TELECOM ITALIA
8866 178 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
3300 161 171 97 AUCS Communications Services
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 700 1067 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 160 75 18 Telecom Argentina Stet-France
5639 132 12 9 Telecommunications Services o
11556 132 80 4 Cable-Wireless Panama
21826 132 16 19 INTERCABLE
6503 127 149 79 AVANTEL, S.A.
19169 125 8 28 Telconet
14259 114 10 12 GTD Internet S.A.
23216 109 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 117 50 7 RAYA Telecom - Egypt
33783 105 6 2 EEPAD TISP TELECOM & INTERNET
2905 72 155 65 The Internetworking Company o
15475 58 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
12455 30 6 3 Jambonet Autonomous system
33774 30 7 20 AS Number for Telecom Algeria
23889 26 8 11 MAURITIUS TELECOM
8524 24 1 4 AUCEGYPT 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 896 880 Sify Limited
4134 1096 875 CHINANET-BACKBONE
19029 953 842 New Edge Networks
4755 767 701 Videsh Sanchar Nigam Ltd. Aut
721 1002 699 DLA Systems Automation Center
22773 654 610 Cox Communications, Inc.
11492 629 609 Cable One
6197 1008 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 700 474 UniNet S.A. de C.V.
7757 477 458 AT&T Broadband
7545 526 457 TPG Internet Pty Ltd
3602 536 427 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
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
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 /8:18 /9:9 /10:9 /11:28 /12:88
/13:198 /14:360 /15:700 /16:8812 /17:3186 /18:5247
/19:11591 /20:13074 /21:11302 /22:14516 /23:15589 /24:101727
/25:379 /26:269 /27:220 /28:62 /29:70 /30:35
/31:0 /32:30
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 798 1504 AT&T WorldNet Services
6197 797 1008 BellSouth Network Solutions,
9583 724 896 Sify Limited
4323 632 1290 Time Warner Telecom
11492 620 629 Cable One
2386 600 880 AT&T Data Communications Serv
19916 557 563 OLM LLC
7011 541 632 Citizens Utilities
4766 489 679 Korea Telecom (KIX)
7757 459 477 AT&T Broadband
855 425 550 Canadian Research Network
5668 414 533 CenturyTel Internet Holdings,
1239 380 845 Sprint
15270 376 407 PaeTec.net -a division of Pae
702 360 581 UUNET - Commercial IP service
6198 356 505 BellSouth Network Solutions,
6517 354 383 Yipes Communications, Inc.
17849 345 345 Telecommunications Technology
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 8:40 12:1630 13:1 15:12 16:3
17:3 18:4 20:43 24:887 25:1 30:2
32:58 38:209 40:54 41:1 44:3 45:2
47:6 52:4 55:1 56:3 57:31 58:148
59:183 60:180 61:829 62:760 63:1930 64:3156
65:2206 66:3100 67:597 68:674 69:1484 70:327
71:77 72:677 73:23 74:30 80:781 81:630
82:598 83:377 84:383 85:526 86:372 87:325
88:75 89:155 124:252 125:366 128:166 129:181
130:107 131:320 132:32 133:8 134:156 135:46
136:178 137:70 138:198 139:67 140:465 141:133
142:384 143:164 144:223 145:43 146:324 147:138
148:328 149:186 150:114 151:81 152:64 153:107
154:6 155:196 156:97 157:143 158:168 159:167
160:87 161:74 162:252 163:145 164:177 165:214
166:163 167:247 168:482 169:134 170:331 171:13
183:1 190:59 192:5768 193:3356 194:2592 195:1828
196:850 198:3866 199:3244 200:4454 201:914 202:6602
203:6824 204:3881 205:2094 206:2422 207:2936 208:2058
209:3791 210:1915 211:691 212:1251 213:1467 214:348
215:41 216:4100 217:1170 218:265 219:181 220:654
221:358 222:146
End of report
