Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Aug 17 18:03:10 UTC 2007
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 18 Aug, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/08/18/0400
Analysis Summary
----------------
BGP routing table entries examined: 228981
Prefixes after maximum aggregation: 120023
Deaggregation factor: 1.91
Unique aggregates announced to Internet: 111293
Total ASes present in the Internet Routing Table: 25995
Prefixes per ASN: 8.81
Origin-only ASes present in the Internet Routing Table: 22636
Origin ASes announcing only one prefix: 11060
Transit ASes present in the Internet Routing Table: 3359
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (35389) 16
Prefixes from unregistered ASNs in the Routing Table: 7
Unregistered ASNs in the Routing Table: 3
Prefixes from 32-bit ASNs in the Routing Table: 5
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1751698656
Equivalent to 104 /8s, 104 /16s and 204 /24s
Percentage of available address space announced: 47.3
Percentage of allocated address space announced: 61.9
Percentage of available address space allocated: 76.4
Total number of prefixes smaller than registry allocations: 121285
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 53554
Total APNIC prefixes after maximum aggregation: 20814
APNIC Deaggregation factor: 2.57
Prefixes being announced from the APNIC address blocks: 50491
Unique aggregates announced from the APNIC address blocks: 22248
APNIC Region origin ASes present in the Internet Routing Table: 3037
APNIC Prefixes per ASN: 16.63
APNIC Region origin ASes announcing only one prefix: 820
APNIC Region transit ASes present in the Internet Routing Table: 463
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 311783328
Equivalent to 18 /8s, 149 /16s and 111 /24s
Percentage of available APNIC address space announced: 77.2
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: 108312
Total ARIN prefixes after maximum aggregation: 62746
ARIN Deaggregation factor: 1.73
Prefixes being announced from the ARIN address blocks: 79754
Unique aggregates announced from the ARIN address blocks: 31860
ARIN Region origin ASes present in the Internet Routing Table: 11765
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4536
ARIN Region transit ASes present in the Internet Routing Table: 1081
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 342081536
Equivalent to 20 /8s, 99 /16s and 192 /24s
Percentage of available ARIN address space announced: 75.5
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: 48172
Total RIPE prefixes after maximum aggregation: 31027
RIPE Deaggregation factor: 1.55
Prefixes being announced from the RIPE address blocks: 44558
Unique aggregates announced from the RIPE address blocks: 29275
RIPE Region origin ASes present in the Internet Routing Table: 10066
RIPE Prefixes per ASN: 4.43
RIPE Region origin ASes announcing only one prefix: 5360
RIPE Region transit ASes present in the Internet Routing Table: 1602
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 323968640
Equivalent to 19 /8s, 79 /16s and 94 /24s
Percentage of available RIPE address space announced: 74.3
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, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 16210
Total LACNIC prefixes after maximum aggregation: 4384
LACNIC Deaggregation factor: 3.70
Prefixes being announced from the LACNIC address blocks: 14309
Unique aggregates announced from the LACNIC address blocks: 7741
LACNIC Region origin ASes present in the Internet Routing Table: 845
LACNIC Prefixes per ASN: 16.93
LACNIC Region origin ASes announcing only one prefix: 276
LACNIC Region transit ASes present in the Internet Routing Table: 144
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 41965312
Equivalent to 2 /8s, 128 /16s and 87 /24s
Percentage of available LACNIC address space announced: 62.5
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: 2721
Total AfriNIC prefixes after maximum aggregation: 1042
AfriNIC Deaggregation factor: 2.61
Prefixes being announced from the AfriNIC address blocks: 2251
Unique aggregates announced from the AfriNIC address blocks: 1356
AfriNIC Region origin ASes present in the Internet Routing Table: 206
AfriNIC Prefixes per ASN: 10.93
AfriNIC Region origin ASes announcing only one prefix: 68
AfriNIC Region transit ASes present in the Internet Routing Table: 33
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 7433984
Equivalent to 0 /8s, 113 /16s and 111 /24s
Percentage of available AfriNIC address space announced: 22.2
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 1332 11140 287 CHINANET-BACKBONE
4755 1322 382 71 Videsh Sanchar Nigam Ltd. Aut
9583 1124 80 404 Sify Limited
9498 998 533 68 BHARTI BT INTERNET LTD.
4766 797 5440 315 Korea Telecom (KIX)
23577 790 34 686 Korea Telecom (ATM-MPLS)
17488 759 49 56 Hathway IP Over Cable Interne
7545 699 150 115 TPG Internet Pty Ltd
18101 588 118 45 Reliance Infocom Ltd Internet
1221 545 1951 426 Telstra Pty Ltd
4812 543 979 98 China Telecom (Shanghai)
4668 516 68 10 LG-EDS Systems Inc.
17676 503 10919 64 Softbank BB Corp.
4808 476 768 107 CNCGROUP IP network: China169
9443 473 122 77 Primus Telecommunications
4802 428 116 154 Wantree Development
7474 393 217 267 SingTel Optus Pty Ltd
17974 364 130 13 PT TELEKOMUNIKASI INDONESIA
9829 363 258 14 BSNL National Internet Backbo
4837 354 4944 165 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1474 6076 991 AT&T WorldNet Services
4323 1329 1007 373 Time Warner Telecom
2386 1210 616 745 AT&T Data Communications Serv
11492 1124 109 32 Cable One
6478 1116 322 140 AT&T Worldnet Services
6197 1029 718 510 BellSouth Network Solutions,
18566 1019 288 9 Covad Communications
174 971 6780 861 Cogent Communications
701 942 6547 720 UUNET Technologies, Inc.
7011 911 260 548 Citizens Utilities
20115 805 741 430 Charter Communications
1239 801 2723 567 Sprint
19262 763 2721 182 Verizon Global Networks
22773 754 2148 49 Cox Communications, Inc.
209 731 3835 580 Qwest
5668 628 171 24 CenturyTel Internet Holdings,
6517 582 161 37 Yipes Communications, Inc.
852 576 1095 363 Telus Advanced Communications
855 575 254 73 Canadian Research Network
6198 569 613 259 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2119 506 918 378 Telenor Internet Access
702 503 1922 404 UUNET - Commercial IP service
24863 362 57 41 LINKdotNET AS number
9116 345 168 26 Goldenlines main autonomous s
3301 313 1456 293 TeliaNet Sweden
3320 313 6035 260 Deutsche Telekom AG
6746 287 130 263 Dynamic Network Technologies,
5089 269 1658 54 NTL Group Limited
680 265 2061 256 DFN-IP service G-WiN
8220 261 445 244 COLT Telecommunications
8708 260 420 241 Romania Data Systems S.A.
3215 256 2392 97 France Telecom Transpac
8551 232 228 27 Bezeq International
3352 225 1868 38 Ibernet, Internet Access Netw
3269 221 2775 73 TELECOM ITALIA
9121 210 1441 24 TTnet Autonomous System
3292 195 1379 175 TDC Tele Danmark
12479 193 578 6 Uni2 Autonomous System
1257 192 1195 170 SWIPnet Swedish IP Network
3300 192 172 93 AUCS Communications Services
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 920 1974 207 UniNet S.A. de C.V.
11830 483 299 9 Instituto Costarricense de El
16814 426 26 9 NSS, S.A.
11172 374 115 61 Servicios Alestra S.A de C.V
7303 337 175 42 Telecom Argentina Stet-France
14522 334 28 7 SatNet S.A.
22047 318 246 13 VTR PUNTO NET S.A.
6471 317 75 32 ENTEL CHILE S.A.
14117 281 19 15 Telefonica del Sur S.A.
10481 261 104 9 Prima S.A.
11556 235 128 3 Cable-Wireless Panama
6147 226 176 27 Telefonica Del Peru
10620 217 61 26 TVCABLE BOGOTA
6503 200 170 82 AVANTEL, S.A.
23216 195 16 43 RAMtelecom Telecomunicaciones
8163 177 11 6 METROTEL REDES S.A.
19169 169 12 18 Telconet
21826 162 28 61 INTERCABLE
20299 161 24 20 NEWCOM AMERICAS
7738 160 506 23 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 282 867 223 The Internet Solution
8452 234 188 7 TEDATA
6713 142 135 11 Itissalat Al-MAGHRIB
2018 140 301 115 Tertiary Education Network
33783 126 8 11 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 99 6 8 Starcomms Nigeria Limited
24835 87 48 6 RAYA Telecom - Egypt
15475 79 84 4 Nile Online
2905 75 174 72 The Internetworking Company o
2561 62 6 2 Egyptian Universities Network
15706 56 12 4 Sudatel Internet Exchange Aut
23889 52 24 15 MAURITIUS TELECOM
5713 46 294 36 Telkom SA Ltd
16637 46 21 29 Johnnic e-Ventures
33774 46 29 24 AS Number for Telecom Algeria
8524 31 2 10 AUCEGYPT Autonomous System
21280 30 4 4 Swift Global Kenya Ltd.Is an
12455 26 6 3 Jambonet Autonomous system
10798 25 2 16 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1322 1251 Videsh Sanchar Nigam Ltd. Aut
11492 1124 1092 Cable One
4134 1332 1045 CHINANET-BACKBONE
18566 1019 1010 Covad Communications
6478 1116 976 AT&T Worldnet Services
4323 1329 956 Time Warner Telecom
9498 998 930 BHARTI BT INTERNET LTD.
9583 1124 720 Sify Limited
8151 920 713 UniNet S.A. de C.V.
22773 754 705 Cox Communications, Inc.
17488 759 703 Hathway IP Over Cable Interne
5668 628 604 CenturyTel Internet Holdings,
7545 699 584 TPG Internet Pty Ltd
19262 763 581 Verizon Global Networks
6517 582 545 Yipes Communications, Inc.
18101 588 543 Reliance Infocom Ltd Internet
15270 566 528 PaeTec.net -a division of Pae
6197 1029 519 BellSouth Network Solutions,
19916 568 517 OLM LLC
4668 516 506 LG-EDS Systems Inc.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
64513 PRIVATE 63.171.234.0/26 1803 SPRINT
64513 PRIVATE 63.171.234.64/26 1803 SPRINT
64513 PRIVATE 63.171.234.128/26 1803 SPRINT
64513 PRIVATE 63.171.234.192/26 1803 SPRINT
65038 PRIVATE 88.213.141.0/24 34695 E4A Primary AS
65038 PRIVATE 88.213.155.0/24 34695 E4A Primary AS
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
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 /8:18 /9:9 /10:15 /11:36 /12:134
/13:257 /14:470 /15:918 /16:9590 /17:4051 /18:6542
/19:13876 /20:16145 /21:14807 /22:19116 /23:20085 /24:120509
/25:778 /26:1030 /27:503 /28:79 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1116 1124 Cable One
6478 1115 1116 AT&T Worldnet Services
18566 1001 1019 Covad Communications
9583 966 1124 Sify Limited
2386 904 1210 AT&T Data Communications Serv
7018 812 1474 AT&T WorldNet Services
7011 808 911 Citizens Utilities
6197 782 1029 BellSouth Network Solutions,
23577 781 790 Korea Telecom (ATM-MPLS)
4755 710 1322 Videsh Sanchar Nigam Ltd. Aut
9498 667 998 BHARTI BT INTERNET LTD.
4766 594 797 Korea Telecom (KIX)
17488 582 759 Hathway IP Over Cable Interne
19916 563 568 OLM LLC
4323 558 1329 Time Warner Telecom
6517 547 582 Yipes Communications, Inc.
15270 530 566 PaeTec.net -a division of Pae
4668 506 516 LG-EDS Systems Inc.
18101 498 588 Reliance Infocom Ltd Internet
5668 493 628 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 7:1 8:86 12:1794 13:1 15:19
16:3 17:3 18:13 20:37 24:954 25:1
32:57 33:3 38:346 40:60 41:307 44:2
47:4 52:4 55:3 56:3 57:25 58:472
59:386 60:356 61:997 62:937 63:1999 64:3162
65:2361 66:3397 67:763 68:644 69:1940 70:442
71:104 72:1383 73:2 74:624 75:255 76:124
77:282 78:36 80:832 81:830 82:654 83:379
84:595 85:851 86:341 87:484 88:285 89:963
90:22 91:486 97:6 116:279 117:134 121:262
122:595 123:155 124:841 125:981 126:1 128:290
129:214 130:140 131:362 132:55 133:9 134:198
135:34 136:188 137:81 138:149 139:71 140:493
141:173 142:379 143:255 144:299 145:46 146:325
147:119 148:409 149:143 150:111 151:159 152:88
153:122 154:3 155:261 156:156 157:214 158:158
159:171 160:105 161:94 162:186 163:179 164:477
165:391 166:275 167:295 168:511 169:121 170:396
171:22 172:2 189:69 190:972 192:5736 193:3960
194:3177 195:2270 196:981 198:3819 199:3267 200:5069
201:1151 202:7392 203:7628 204:3949 205:1982 206:2416
207:2818 208:2775 209:3479 210:2440 211:985 212:1341
213:1475 214:416 215:41 216:4003 217:1165 218:353
219:381 220:1013 221:416 222:265
End of report
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