Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Oct 16 18:27:17 UTC 2009
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 17 Oct, 2009
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 300381
Prefixes after maximum aggregation: 140850
Deaggregation factor: 2.13
Unique aggregates announced to Internet: 148722
Total ASes present in the Internet Routing Table: 32446
Prefixes per ASN: 9.26
Origin-only ASes present in the Internet Routing Table: 28188
Origin ASes announcing only one prefix: 13763
Transit ASes present in the Internet Routing Table: 4258
Transit-only ASes present in the Internet Routing Table: 104
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN (12026) 22
Prefixes from unregistered ASNs in the Routing Table: 565
Unregistered ASNs in the Routing Table: 128
Number of 32-bit ASNs allocated by the RIRs: 292
Prefixes from 32-bit ASNs in the Routing Table: 217
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 192
Number of addresses announced to Internet: 2114870368
Equivalent to 126 /8s, 14 /16s and 92 /24s
Percentage of available address space announced: 57.1
Percentage of allocated address space announced: 64.7
Percentage of available address space allocated: 88.2
Percentage of address space in use by end-sites: 79.4
Total number of prefixes smaller than registry allocations: 144438
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 72024
Total APNIC prefixes after maximum aggregation: 25287
APNIC Deaggregation factor: 2.85
Prefixes being announced from the APNIC address blocks: 68525
Unique aggregates announced from the APNIC address blocks: 30332
APNIC Region origin ASes present in the Internet Routing Table: 3821
APNIC Prefixes per ASN: 17.93
APNIC Region origin ASes announcing only one prefix: 1041
APNIC Region transit ASes present in the Internet Routing Table: 586
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 462426016
Equivalent to 27 /8s, 144 /16s and 15 /24s
Percentage of available APNIC address space announced: 78.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 43/8, 58/8, 59/8, 60/8, 61/8, 110/8, 111/8,
112/8, 113/8, 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, 175/8, 180/8, 182/8, 183/8, 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: 126924
Total ARIN prefixes after maximum aggregation: 66963
ARIN Deaggregation factor: 1.90
Prefixes being announced from the ARIN address blocks: 101444
Unique aggregates announced from the ARIN address blocks: 38562
ARIN Region origin ASes present in the Internet Routing Table: 13302
ARIN Prefixes per ASN: 7.63
ARIN Region origin ASes announcing only one prefix: 5154
ARIN Region transit ASes present in the Internet Routing Table: 1309
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 24
Number of ARIN addresses announced to Internet: 707408384
Equivalent to 42 /8s, 42 /16s and 50 /24s
Percentage of available ARIN address space announced: 62.0
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
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 24/8, 26/8, 28/8, 29/8,
30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8,
44/8, 45/8, 47/8, 48/8, 52/8, 54/8, 55/8,
56/8, 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, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 69231
Total RIPE prefixes after maximum aggregation: 40421
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 62717
Unique aggregates announced from the RIPE address blocks: 41918
RIPE Region origin ASes present in the Internet Routing Table: 13610
RIPE Prefixes per ASN: 4.61
RIPE Region origin ASes announcing only one prefix: 7088
RIPE Region transit ASes present in the Internet Routing Table: 2058
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 402187968
Equivalent to 23 /8s, 248 /16s and 230 /24s
Percentage of available RIPE address space announced: 74.9
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
40960-45055, 47104-52223, 196608-197631
RIPE Address Blocks 2/8, 25/8, 46/8, 51/8, 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, 109/8, 178/8, 193/8, 194/8,
195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 25837
Total LACNIC prefixes after maximum aggregation: 6363
LACNIC Deaggregation factor: 4.06
Prefixes being announced from the LACNIC address blocks: 24132
Unique aggregates announced from the LACNIC address blocks: 13313
LACNIC Region origin ASes present in the Internet Routing Table: 1192
LACNIC Prefixes per ASN: 20.24
LACNIC Region origin ASes announcing only one prefix: 381
LACNIC Region transit ASes present in the Internet Routing Table: 193
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 67348480
Equivalent to 4 /8s, 3 /16s and 168 /24s
Percentage of available LACNIC address space announced: 66.9
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 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: 5911
Total AfriNIC prefixes after maximum aggregation: 1540
AfriNIC Deaggregation factor: 3.84
Prefixes being announced from the AfriNIC address blocks: 4303
Unique aggregates announced from the AfriNIC address blocks: 1571
AfriNIC Region origin ASes present in the Internet Routing Table: 328
AfriNIC Prefixes per ASN: 13.12
AfriNIC Region origin ASes announcing only one prefix: 99
AfriNIC Region transit ASes present in the Internet Routing Table: 67
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 12591360
Equivalent to 0 /8s, 192 /16s and 33 /24s
Percentage of available AfriNIC address space announced: 37.5
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1764 6996 458 Korea Telecom (KIX)
17488 1466 138 143 Hathway IP Over Cable Interne
4755 1266 292 145 TATA Communications formerly
9583 1102 87 531 Sify Limited
4134 1012 18169 392 CHINANET-BACKBONE
18101 980 204 33 Reliance Infocom Ltd Internet
7545 892 199 101 TPG Internet Pty Ltd
9829 849 661 20 BSNL National Internet Backbo
17974 789 248 93 PT TELEKOMUNIKASI INDONESIA
24560 778 286 165 Bharti Airtel Ltd., Telemedia
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 4161 3626 312 bellsouth.net, inc.
4323 3704 1037 385 Time Warner Telecom
1785 1770 714 139 PaeTec Communications, Inc.
7018 1567 5846 1061 AT&T WorldNet Services
20115 1487 1481 676 Charter Communications
6478 1368 276 419 AT&T Worldnet Services
2386 1304 637 943 AT&T Data Communications Serv
3356 1229 10964 439 Level 3 Communications, LLC
11492 1135 208 12 Cable One
22773 1114 2604 67 Cox Communications, Inc.
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
30890 512 94 207 Evolva Telecom
35805 458 40 5 United Telecom of Georgia
3292 450 1908 394 TDC Tele Danmark
12479 429 578 6 Uni2 Autonomous System
702 420 1822 338 UUNET - Commercial IP service
9198 393 138 12 Kazakhtelecom Data Network Ad
8866 358 110 23 Bulgarian Telecommunication C
3320 356 7068 304 Deutsche Telekom AG
3301 351 1412 308 TeliaNet Sweden
3215 349 3144 111 France Telecom Transpac
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 1513 2899 244 UniNet S.A. de C.V.
10620 1018 227 100 TVCABLE BOGOTA
28573 767 651 87 NET Servicos de Comunicao S.A
7303 654 346 100 Telecom Argentina Stet-France
22047 545 302 14 VTR PUNTO NET S.A.
11830 475 310 61 Instituto Costarricense de El
11172 442 99 70 Servicios Alestra S.A de C.V
14117 437 29 11 Telefonica del Sur S.A.
7738 428 858 29 Telecomunicacoes da Bahia S.A
6471 421 96 31 ENTEL CHILE S.A.
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
8452 989 188 7 TEDATA
24863 932 96 67 LINKdotNET AS number
3741 273 857 234 The Internet Solution
2018 191 183 117 Tertiary Education Network
6713 176 167 12 Itissalat Al-MAGHRIB
29571 140 14 6 Ci Telecom Autonomous system
33776 124 7 11 Starcomms Nigeria Limited
5536 122 8 13 Internet Egypt Network
5713 116 508 67 Telkom SA Ltd
24835 108 46 9 RAYA Telecom - Egypt
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 4161 3626 312 bellsouth.net, inc.
4323 3704 1037 385 Time Warner Telecom
1785 1770 714 139 PaeTec Communications, Inc.
4766 1764 6996 458 Korea Telecom (KIX)
7018 1567 5846 1061 AT&T WorldNet Services
8151 1513 2899 244 UniNet S.A. de C.V.
20115 1487 1481 676 Charter Communications
17488 1466 138 143 Hathway IP Over Cable Interne
6478 1368 276 419 AT&T Worldnet Services
2386 1304 637 943 AT&T Data Communications Serv
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 3704 3319 Time Warner Telecom
1785 1770 1631 PaeTec Communications, Inc.
17488 1466 1323 Hathway IP Over Cable Interne
4766 1764 1306 Korea Telecom (KIX)
8151 1513 1269 UniNet S.A. de C.V.
11492 1135 1123 Cable One
4755 1266 1121 TATA Communications formerly
18566 1062 1052 Covad Communications
22773 1114 1047 Cox Communications, Inc.
8452 989 982 TEDATA
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 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
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
32326 UNALLOCATED 12.40.49.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.0.0.0/16 12654 RIPE NCC RIS Project
2.1.0.0/21 12654 RIPE NCC RIS Project
2.1.24.0/24 12654 RIPE NCC RIS Project
41.223.92.0/22 36936 >>UNKNOWN<<
41.223.189.0/24 26452 Local Communications Networks
43.245.0.0/16 7502 Internetwork Kyoto
46.0.0.0/16 12654 RIPE NCC RIS Project
46.1.0.0/21 12654 RIPE NCC RIS Project
46.1.24.0/24 12654 RIPE NCC RIS Project
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /8:20 /9:10 /10:24 /11:63 /12:176
/13:357 /14:630 /15:1207 /16:10697 /17:4881 /18:8438
/19:17490 /20:21039 /21:21018 /22:27426 /23:26869 /24:157288
/25:923 /26:1096 /27:553 /28:153 /29:8 /30:7
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2693 4161 bellsouth.net, inc.
4323 2354 3704 Time Warner Telecom
4766 1437 1764 Korea Telecom (KIX)
1785 1235 1770 PaeTec Communications, Inc.
17488 1227 1466 Hathway IP Over Cable Interne
11492 1058 1135 Cable One
18566 1043 1062 Covad Communications
9583 954 1102 Sify Limited
10620 924 1018 TVCABLE BOGOTA
7018 923 1567 AT&T WorldNet Services
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
2:1 4:14 8:223 12:2142 13:7 15:22
16:3 17:5 20:36 24:1184 32:52 34:2
38:603 40:97 41:1749 43:1 44:2 46:1
47:20 52:6 55:2 56:2 57:25 58:604
59:640 60:440 61:1078 62:1017 63:2006 64:3632
65:2383 66:4091 67:1811 68:984 69:2758 70:568
71:154 72:1689 73:2 74:1946 75:182 76:358
77:863 78:579 79:388 80:905 81:809 82:488
83:434 84:525 85:1001 86:377 87:695 88:389
89:1516 90:70 91:2602 92:414 93:1228 94:1260
95:1130 96:174 97:271 98:346 99:30 109:58
110:232 111:455 112:145 113:152 114:265 115:422
116:1076 117:550 118:355 119:776 120:131 121:789
122:1291 123:780 124:1039 125:1364 128:220 129:220
130:131 131:421 132:76 133:10 134:186 135:42
136:224 137:170 138:174 139:82 140:437 141:123
142:385 143:340 144:368 145:48 146:391 147:172
148:548 149:203 150:151 151:176 152:216 153:156
154:2 155:271 156:166 157:310 158:90 159:357
160:292 161:171 162:279 163:172 164:279 165:512
166:476 167:389 168:752 169:163 170:463 171:42
172:2 173:397 174:372 175:1 178:1 180:84
182:1 186:145 187:175 188:1185 189:604 190:3102
192:5763 193:4274 194:3324 195:2755 196:1158 198:3555
199:3357 200:5199 201:1364 202:7868 203:8229 204:3921
205:2194 206:2403 207:2977 208:3963 209:3484 210:2565
211:1135 212:1603 213:1623 214:195 215:39 216:4406
217:1327 218:415 219:457 220:1133 221:449 222:312
End of report
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