Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Oct 29 18:25:01 UTC 2010
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 30 Oct, 2010
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 334884
Prefixes after maximum aggregation: 153059
Deaggregation factor: 2.19
Unique aggregates announced to Internet: 164990
Total ASes present in the Internet Routing Table: 35132
Prefixes per ASN: 9.53
Origin-only ASes present in the Internet Routing Table: 30301
Origin ASes announcing only one prefix: 14792
Transit ASes present in the Internet Routing Table: 4831
Transit-only ASes present in the Internet Routing Table: 116
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 30
Max AS path prepend of ASN (41664) 21
Prefixes from unregistered ASNs in the Routing Table: 299
Unregistered ASNs in the Routing Table: 126
Number of 32-bit ASNs allocated by the RIRs: 855
Prefixes from 32-bit ASNs in the Routing Table: 4
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 190
Number of addresses announced to Internet: 2326677152
Equivalent to 138 /8s, 174 /16s and 70 /24s
Percentage of available address space announced: 62.8
Percentage of allocated address space announced: 66.4
Percentage of available address space allocated: 94.6
Percentage of address space in use by end-sites: 85.7
Total number of prefixes smaller than registry allocations: 137440
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 82239
Total APNIC prefixes after maximum aggregation: 28016
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 79141
Unique aggregates announced from the APNIC address blocks: 34694
APNIC Region origin ASes present in the Internet Routing Table: 4221
APNIC Prefixes per ASN: 18.75
APNIC Region origin ASes announcing only one prefix: 1175
APNIC Region transit ASes present in the Internet Routing Table: 674
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 560662560
Equivalent to 33 /8s, 107 /16s and 8 /24s
Percentage of available APNIC address space announced: 76.0
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, 42/8, 43/8, 49/8,
58/8, 59/8, 60/8, 61/8, 101/8, 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: 137395
Total ARIN prefixes after maximum aggregation: 71132
ARIN Deaggregation factor: 1.93
Prefixes being announced from the ARIN address blocks: 108801
Unique aggregates announced from the ARIN address blocks: 43651
ARIN Region origin ASes present in the Internet Routing Table: 14008
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5372
ARIN Region transit ASes present in the Internet Routing Table: 1485
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 738378752
Equivalent to 44 /8s, 2 /16s and 196 /24s
Percentage of available ARIN address space announced: 62.9
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, 50/8, 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, 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: 77241
Total RIPE prefixes after maximum aggregation: 44695
RIPE Deaggregation factor: 1.73
Prefixes being announced from the RIPE address blocks: 70713
Unique aggregates announced from the RIPE address blocks: 46395
RIPE Region origin ASes present in the Internet Routing Table: 14930
RIPE Prefixes per ASN: 4.74
RIPE Region origin ASes announcing only one prefix: 7688
RIPE Region transit ASes present in the Internet Routing Table: 2300
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 443077376
Equivalent to 26 /8s, 104 /16s and 211 /24s
Percentage of available RIPE address space announced: 77.7
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, 31/8, 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,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 30226
Total LACNIC prefixes after maximum aggregation: 7219
LACNIC Deaggregation factor: 4.19
Prefixes being announced from the LACNIC address blocks: 28913
Unique aggregates announced from the LACNIC address blocks: 15358
LACNIC Region origin ASes present in the Internet Routing Table: 1377
LACNIC Prefixes per ASN: 21.00
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 238
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 76766720
Equivalent to 4 /8s, 147 /16s and 94 /24s
Percentage of available LACNIC address space announced: 57.2
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 7554
Total AfriNIC prefixes after maximum aggregation: 1877
AfriNIC Deaggregation factor: 4.02
Prefixes being announced from the AfriNIC address blocks: 5871
Unique aggregates announced from the AfriNIC address blocks: 1719
AfriNIC Region origin ASes present in the Internet Routing Table: 415
AfriNIC Prefixes per ASN: 14.15
AfriNIC Region origin ASes announcing only one prefix: 129
AfriNIC Region transit ASes present in the Internet Routing Table: 89
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 21
Number of AfriNIC addresses announced to Internet: 21458176
Equivalent to 1 /8s, 71 /16s and 109 /24s
Percentage of available AfriNIC address space announced: 64.0
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 1867 9453 512 Korea Telecom (KIX)
7545 1424 299 78 TPG Internet Pty Ltd
4755 1380 379 158 TATA Communications formerly
17488 1364 156 121 Hathway IP Over Cable Interne
17974 1277 304 82 PT TELEKOMUNIKASI INDONESIA
24560 1053 309 173 Bharti Airtel Ltd., Telemedia
9583 1030 76 491 Sify Limited
4808 976 1720 265 CNCGROUP IP network: China169
18101 894 116 133 Reliance Infocom Ltd Internet
9829 826 694 27 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 3760 3666 279 bellsouth.net, inc.
4323 2611 1104 393 Time Warner Telecom
1785 1792 698 130 PaeTec Communications, Inc.
19262 1776 4833 278 Verizon Global Networks
20115 1507 1528 644 Charter Communications
7018 1420 5691 909 AT&T WorldNet Services
6478 1398 280 76 AT&T Worldnet Services
2386 1317 556 932 AT&T Data Communications Serv
11492 1237 231 74 Cable One
22773 1225 2859 62 Cox Communications, Inc.
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
3292 447 2028 391 TDC Tele Danmark
8866 426 133 25 Bulgarian Telecommunication C
8551 402 353 46 Bezeq International
702 397 1866 311 UUNET - Commercial IP service
34984 381 91 188 BILISIM TELEKOM
3301 379 1696 336 TeliaNet Sweden
3320 377 7332 330 Deutsche Telekom AG
30890 375 80 206 Evolva Telecom
12479 366 576 5 Uni2 Autonomous System
31148 360 19 82 FreeNet ISP
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 1330 248 155 TVCABLE BOGOTA
8151 1326 2597 366 UniNet S.A. de C.V.
28573 1206 928 84 NET Servicos de Comunicao S.A
7303 832 441 108 Telecom Argentina Stet-France
6503 794 225 259 AVANTEL, S.A.
22047 564 310 15 VTR PUNTO NET S.A.
14420 554 42 82 CORPORACION NACIONAL DE TELEC
3816 485 210 96 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 448 32 27 Telefonica del Sur 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 1112 445 10 TEDATA
24863 744 147 39 LINKdotNET AS number
36992 643 278 160 Etisalat MISR
3741 268 907 225 The Internet Solution
24835 209 78 10 RAYA Telecom - Egypt
6713 203 199 12 Itissalat Al-MAGHRIB
29571 203 19 11 Ci Telecom Autonomous system
2018 197 277 64 Tertiary Education Network
33776 196 12 14 Starcomms Nigeria Limited
16637 152 440 89 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 3760 3666 279 bellsouth.net, inc.
4323 2611 1104 393 Time Warner Telecom
4766 1867 9453 512 Korea Telecom (KIX)
1785 1792 698 130 PaeTec Communications, Inc.
19262 1776 4833 278 Verizon Global Networks
20115 1507 1528 644 Charter Communications
7545 1424 299 78 TPG Internet Pty Ltd
7018 1420 5691 909 AT&T WorldNet Services
6478 1398 280 76 AT&T Worldnet Services
4755 1380 379 158 TATA Communications formerly
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 2611 2218 Time Warner Telecom
1785 1792 1662 PaeTec Communications, Inc.
19262 1776 1498 Verizon Global Networks
4766 1867 1355 Korea Telecom (KIX)
7545 1424 1346 TPG Internet Pty Ltd
6478 1398 1322 AT&T Worldnet Services
17488 1364 1243 Hathway IP Over Cable Interne
4755 1380 1222 TATA Communications formerly
17974 1277 1195 PT TELEKOMUNIKASI INDONESIA
10620 1330 1175 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
31.0.0.0/16 12654 RIPE NCC RIS Project
31.1.0.0/21 12654 RIPE NCC RIS Project
31.1.24.0/24 12654 RIPE NCC RIS Project
36.0.0.0/8 237 Merit Network
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
42.0.0.0/8 237 Merit Network
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.21.192.0/20 11610 Internet Nebraska Corporation
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 /10:25 /11:68 /12:206
/13:420 /14:744 /15:1346 /16:11369 /17:5534 /18:9378
/19:18596 /20:23846 /21:23863 /22:31488 /23:30659 /24:174487
/25:974 /26:1098 /27:580 /28:151 /29:12 /30:2
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2325 3760 bellsouth.net, inc.
4323 1402 2611 Time Warner Telecom
6478 1360 1398 AT&T Worldnet Services
10620 1222 1330 TVCABLE BOGOTA
11492 1194 1237 Cable One
1785 1074 1792 PaeTec Communications, Inc.
18566 1069 1088 Covad Communications
7011 1059 1160 Citizens Utilities
8452 1008 1112 TEDATA
19262 902 1776 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:92 2:13 4:13 5:1 8:312 12:1995
13:8 14:53 15:18 16:3 17:8 20:9
24:1402 27:394 31:1 32:61 33:11 38:697
40:101 41:2618 44:3 46:199 47:10 49:4
50:3 52:12 55:5 56:2 57:29 58:834
59:501 60:480 61:1122 62:1003 63:1964 64:3746
65:2344 66:4069 67:1809 68:1123 69:2878 70:753
71:376 72:1894 73:2 74:2324 75:295 76:326
77:855 78:683 79:443 80:1060 81:795 82:513
83:454 84:684 85:1020 86:472 87:694 88:329
89:1572 90:109 91:3144 92:438 93:983 94:1120
95:704 96:396 97:222 98:632 99:32 100:1
101:3 108:64 109:724 110:426 111:619 112:308
113:306 114:478 115:615 116:1142 117:660 118:556
119:999 120:164 121:715 122:1606 123:950 124:1224
125:1270 128:229 129:152 130:168 131:564 132:275
133:20 134:207 135:46 136:211 137:142 138:279
139:109 140:485 141:198 142:347 143:361 144:500
145:55 146:427 147:173 148:619 149:308 150:146
151:231 152:293 153:175 154:3 155:362 156:166
157:338 158:112 159:361 160:312 161:199 162:274
163:163 164:426 165:349 166:469 167:426 168:681
169:155 170:718 171:62 172:2 173:1074 174:484
175:242 176:1 178:562 180:688 182:255 183:238
184:155 186:751 187:560 188:855 189:806 190:4185
192:5764 193:4751 194:3440 195:2839 196:1196 198:3519
199:3629 200:5409 201:1583 202:8177 203:8297 204:4016
205:2326 206:2569 207:3009 208:3885 209:3456 210:2557
211:1278 212:1805 213:1729 214:675 215:66 216:4742
217:1571 218:526 219:401 220:1184 221:428 222:343
223:59
End of report
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