Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Feb 11 18:26:34 UTC 2011
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 12 Feb, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 345778
Prefixes after maximum aggregation: 155766
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 170953
Total ASes present in the Internet Routing Table: 35854
Prefixes per ASN: 9.64
Origin-only ASes present in the Internet Routing Table: 30896
Origin ASes announcing only one prefix: 14961
Transit ASes present in the Internet Routing Table: 4958
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 332
Unregistered ASNs in the Routing Table: 131
Number of 32-bit ASNs allocated by the RIRs: 1110
Prefixes from 32-bit ASNs in the Routing Table: 1
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 205
Number of addresses announced to Internet: 2391302464
Equivalent to 142 /8s, 136 /16s and 97 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 87.9
Total number of prefixes smaller than registry allocations: 142918
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85341
Total APNIC prefixes after maximum aggregation: 28875
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 82125
Unique aggregates announced from the APNIC address blocks: 35753
APNIC Region origin ASes present in the Internet Routing Table: 4317
APNIC Prefixes per ASN: 19.02
APNIC Region origin ASes announcing only one prefix: 1203
APNIC Region transit ASes present in the Internet Routing Table: 690
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 587134752
Equivalent to 34 /8s, 254 /16s and 247 /24s
Percentage of available APNIC address space announced: 74.5
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 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 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, 133/8, 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, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 139230
Total ARIN prefixes after maximum aggregation: 71212
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110113
Unique aggregates announced from the ARIN address blocks: 44882
ARIN Region origin ASes present in the Internet Routing Table: 14196
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5420
ARIN Region transit ASes present in the Internet Routing Table: 1476
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 786454144
Equivalent to 46 /8s, 224 /16s and 86 /24s
Percentage of available ARIN address space announced: 62.5
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, 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, 23/8, 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, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 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, 100/8, 104/8, 107/8, 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: 81886
Total RIPE prefixes after maximum aggregation: 46434
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 75207
Unique aggregates announced from the RIPE address blocks: 48805
RIPE Region origin ASes present in the Internet Routing Table: 15293
RIPE Prefixes per ASN: 4.92
RIPE Region origin ASes announcing only one prefix: 7772
RIPE Region transit ASes present in the Internet Routing Table: 2377
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 459033920
Equivalent to 27 /8s, 92 /16s and 77 /24s
Percentage of available RIPE address space announced: 73.9
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, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 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,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 31630
Total LACNIC prefixes after maximum aggregation: 7330
LACNIC Deaggregation factor: 4.32
Prefixes being announced from the LACNIC address blocks: 30383
Unique aggregates announced from the LACNIC address blocks: 15919
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.25
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 258
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 80671104
Equivalent to 4 /8s, 206 /16s and 241 /24s
Percentage of available LACNIC address space announced: 53.4
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 7471
Total AfriNIC prefixes after maximum aggregation: 1804
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5880
Unique aggregates announced from the AfriNIC address blocks: 1832
AfriNIC Region origin ASes present in the Internet Routing Table: 435
AfriNIC Prefixes per ASN: 13.52
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.3
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 21855488
Equivalent to 1 /8s, 77 /16s and 125 /24s
Percentage of available AfriNIC address space announced: 32.6
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1991 9487 584 Korea Telecom (KIX)
7545 1633 301 84 TPG Internet Pty Ltd
4755 1412 633 161 TATA Communications formerly
17974 1408 467 28 PT TELEKOMUNIKASI INDONESIA
24560 1108 323 181 Bharti Airtel Ltd., Telemedia
4808 1042 2142 294 CNCGROUP IP network: China169
9583 1042 76 487 Sify Limited
17488 952 162 104 Hathway IP Over Cable Interne
18101 929 117 144 Reliance Infocom Ltd Internet
9829 898 763 42 BSNL National Internet Backbo
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3704 3855 264 bellsouth.net, inc.
4323 2625 1109 403 Time Warner Telecom
19262 1842 4951 283 Verizon Global Networks
1785 1786 697 131 PaeTec Communications, Inc.
20115 1529 1534 646 Charter Communications
6478 1500 296 62 AT&T Worldnet Services
7018 1353 6673 870 AT&T WorldNet Services
2386 1299 553 936 AT&T Data Communications Serv
11492 1282 236 73 Cable One
18566 1282 311 104 Covad Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 511 1764 316 UPC Distribution Services
9198 465 266 14 Kazakhtelecom Data Network Ad
34984 456 97 137 BILISIM TELEKOM
3292 445 1996 387 TDC Tele Danmark
8866 440 133 23 Bulgarian Telecommunication C
3320 406 7620 355 Deutsche Telekom AG
8551 403 353 46 Bezeq International
20940 401 93 308 Akamai Technologies European
702 395 1800 308 UUNET - Commercial IP service
3301 383 1822 341 TeliaNet Sweden
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1371 255 165 TVCABLE BOGOTA
8151 1342 2663 359 UniNet S.A. de C.V.
28573 1237 961 82 NET Servicos de Comunicao S.A
6503 1189 355 78 AVANTEL, S.A.
7303 872 445 142 Telecom Argentina Stet-France
14420 638 57 92 CORPORACION NACIONAL DE TELEC
22047 543 310 15 VTR PUNTO NET S.A.
3816 503 220 94 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
27947 458 53 53 Telconet S.A
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 771 445 11 TEDATA
24863 763 147 39 LINKdotNET AS number
36992 584 305 17 Etisalat MISR
3741 264 987 226 The Internet Solution
15475 220 56 9 Nile Online
24835 218 78 10 RAYA Telecom - Egypt
6713 205 199 12 Itissalat Al-MAGHRIB
33776 194 12 15 Starcomms Nigeria Limited
29571 193 19 11 Ci Telecom Autonomous system
16637 147 422 83 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3704 3855 264 bellsouth.net, inc.
4323 2625 1109 403 Time Warner Telecom
4766 1991 9487 584 Korea Telecom (KIX)
19262 1842 4951 283 Verizon Global Networks
1785 1786 697 131 PaeTec Communications, Inc.
7545 1633 301 84 TPG Internet Pty Ltd
20115 1529 1534 646 Charter Communications
6478 1500 296 62 AT&T Worldnet Services
4755 1412 633 161 TATA Communications formerly
17974 1408 467 28 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2625 2222 Time Warner Telecom
1785 1786 1655 PaeTec Communications, Inc.
19262 1842 1559 Verizon Global Networks
7545 1633 1549 TPG Internet Pty Ltd
6478 1500 1438 AT&T Worldnet Services
4766 1991 1407 Korea Telecom (KIX)
17974 1408 1380 PT TELEKOMUNIKASI INDONESIA
4755 1412 1251 TATA Communications formerly
11492 1282 1209 Cable One
10620 1371 1206 TVCABLE BOGOTA
Complete listing at http://thyme.rand.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 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
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 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
31.28.0.0/19 29076 Hoster.RU autonomous system
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
39.0.0.0/8 237 Merit Network
41.57.192.0/18 22750 BCSNET
Complete listing at http://thyme.rand.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 /8:21 /9:10 /10:26 /11:71 /12:215
/13:444 /14:764 /15:1364 /16:11492 /17:5636 /18:9315
/19:18823 /20:24344 /21:24767 /22:32958 /23:31632 /24:181055
/25:986 /26:1087 /27:570 /28:171 /29:16 /30:3
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2283 3704 bellsouth.net, inc.
6478 1454 1500 AT&T Worldnet Services
4323 1414 2625 Time Warner Telecom
10620 1262 1371 TVCABLE BOGOTA
18566 1260 1282 Covad Communications
11492 1239 1282 Cable One
7011 1062 1165 Citizens Utilities
1785 1055 1786 PaeTec Communications, Inc.
6503 966 1189 AVANTEL, S.A.
19262 954 1842 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:177 2:45 4:13 5:1 8:331 12:2028
13:1 14:412 15:15 16:3 17:8 20:9
23:1 24:1480 27:579 32:61 33:5 34:2
37:1 38:701 40:101 41:2285 44:3 46:585
47:5 49:145 50:82 52:12 55:7 56:2
57:32 58:868 59:477 60:391 61:1114 62:1095
63:1944 64:3781 65:2363 66:4163 67:1761 68:1025
69:2914 70:739 71:400 72:2006 73:1 74:2324
75:292 76:345 77:864 78:705 79:444 80:1048
81:824 82:538 83:471 84:645 85:1052 86:553
87:740 88:355 89:1574 90:156 91:3462 92:494
93:1040 94:1200 95:754 96:428 97:251 98:792
99:33 101:27 107:3 108:88 109:955 110:471
111:695 112:311 113:360 114:502 115:640 116:934
117:679 118:668 119:1021 120:239 121:702 122:1634
123:1061 124:1270 125:1225 128:264 129:153 130:172
131:570 132:109 133:20 134:217 135:49 136:216
137:147 138:291 139:117 140:492 141:196 142:358
143:387 144:483 145:51 146:431 147:202 148:635
149:274 150:161 151:229 152:306 153:179 154:3
155:350 156:176 157:342 158:129 159:380 160:314
161:205 162:272 163:161 164:486 165:339 166:498
167:422 168:742 169:151 170:750 171:69 172:2
173:1289 174:519 175:315 176:1 177:4 178:758
180:796 182:350 183:240 184:209 186:988 187:809
188:908 189:1044 190:4340 192:5797 193:4799 194:3504
195:2955 196:1177 197:3 198:3576 199:3829 200:5573
201:1580 202:8272 203:8432 204:4115 205:2337 206:2631
207:3081 208:3899 209:3496 210:2650 211:1334 212:1886
213:1731 214:756 215:62 216:4885 217:1612 218:532
219:376 220:1203 221:449 222:313 223:97
End of report
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