[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Mar 18 15:38:08 BRT 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 en lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfs en cisco.com>.
Routing Table Report 04:00 +10GMT Sat 19 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350396
Prefixes after maximum aggregation: 158064
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 173325
Total ASes present in the Internet Routing Table: 36104
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 31128
Origin ASes announcing only one prefix: 14967
Transit ASes present in the Internet Routing Table: 4976
Transit-only ASes present in the Internet Routing Table: 126
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: 419
Unregistered ASNs in the Routing Table: 197
Number of 32-bit ASNs allocated by the RIRs: 1207
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: 195
Number of addresses announced to Internet: 2389006912
Equivalent to 142 /8s, 101 /16s and 90 /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: 89.5
Total number of prefixes smaller than registry allocations: 145036
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87454
Total APNIC prefixes after maximum aggregation: 29725
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84332
Unique aggregates announced from the APNIC address blocks: 36512
APNIC Region origin ASes present in the Internet Routing Table: 4355
APNIC Prefixes per ASN: 19.36
APNIC Region origin ASes announcing only one prefix: 1209
APNIC Region transit ASes present in the Internet Routing Table: 688
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 20
Number of APNIC addresses announced to Internet: 599437120
Equivalent to 35 /8s, 186 /16s and 175 /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, 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: 140255
Total ARIN prefixes after maximum aggregation: 71845
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110784
Unique aggregates announced from the ARIN address blocks: 45089
ARIN Region origin ASes present in the Internet Routing Table: 14268
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5424
ARIN Region transit ASes present in the Internet Routing Table: 1481
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 796960256
Equivalent to 47 /8s, 128 /16s and 166 /24s
Percentage of available ARIN address space announced: 63.3
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: 82861
Total RIPE prefixes after maximum aggregation: 47241
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76228
Unique aggregates announced from the RIPE address blocks: 49953
RIPE Region origin ASes present in the Internet Routing Table: 15431
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7778
RIPE Region transit ASes present in the Internet Routing Table: 2398
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 465167872
Equivalent to 27 /8s, 185 /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, 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: 32138
Total LACNIC prefixes after maximum aggregation: 7344
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31063
Unique aggregates announced from the LACNIC address blocks: 16158
LACNIC Region origin ASes present in the Internet Routing Table: 1433
LACNIC Prefixes per ASN: 21.68
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 81506688
Equivalent to 4 /8s, 219 /16s and 177 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7476
Total AfriNIC prefixes after maximum aggregation: 1806
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5882
Unique aggregates announced from the AfriNIC address blocks: 1800
AfriNIC Region origin ASes present in the Internet Routing Table: 434
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 127
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 22062080
Equivalent to 1 /8s, 80 /16s and 164 /24s
Percentage of available AfriNIC address space announced: 32.9
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 2426 9508 896 Korea Telecom (KIX)
7545 1569 301 84 TPG Internet Pty Ltd
4755 1476 653 158 TATA Communications formerly
17974 1443 480 34 PT TELEKOMUNIKASI INDONESIA
24560 1134 324 187 Bharti Airtel Ltd., Telemedia
9583 1047 77 490 Sify Limited
4808 1046 2142 294 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
18101 939 117 143 Reliance Infocom Ltd Internet
17488 936 162 96 Hathway IP Over Cable Interne
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 3675 3839 259 bellsouth.net, inc.
4323 2569 1093 402 Time Warner Telecom
1785 1792 681 131 PaeTec Communications, Inc.
18566 1606 331 194 Covad Communications
6478 1551 300 76 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1488 4939 299 Verizon Global Networks
7018 1368 6835 887 AT&T WorldNet Services
11492 1314 236 64 Cable One
2386 1289 536 929 AT&T Data Communications Serv
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 515 1780 318 UPC Distribution Services
9198 472 267 15 Kazakhtelecom Data Network Ad
34984 455 95 203 BILISIM TELEKOM
3292 453 2013 391 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
20940 411 98 314 Akamai Technologies European
3320 406 7604 354 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 403 577 6 Uni2 Autonomous System
8402 398 320 11 Corbina telecom
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 1392 259 163 TVCABLE BOGOTA
28573 1243 965 82 NET Servicos de Comunicao S.A
8151 1238 2702 368 UniNet S.A. de C.V.
6503 1175 354 73 AVANTEL, S.A.
7303 923 464 147 Telecom Argentina Stet-France
14420 639 52 91 CORPORACION NACIONAL DE TELEC
22047 543 310 15 VTR PUNTO NET S.A.
3816 513 225 97 Empresa Nacional de Telecomun
13489 491 213 106 Orbitel S.A. E.S.P.
11172 487 99 81 Servicios Alestra S.A de C.V
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 791 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 297 271 14 Etisalat MISR
3741 266 987 228 The Internet Solution
33776 230 13 5 Starcomms Nigeria Limited
24835 220 78 10 RAYA Telecom - Egypt
6713 207 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 147 439 87 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 3675 3839 259 bellsouth.net, inc.
4323 2569 1093 402 Time Warner Telecom
4766 2426 9508 896 Korea Telecom (KIX)
1785 1792 681 131 PaeTec Communications, Inc.
18566 1606 331 194 Covad Communications
7545 1569 301 84 TPG Internet Pty Ltd
6478 1551 300 76 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1488 4939 299 Verizon Global Networks
4755 1476 653 158 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 2569 2167 Time Warner Telecom
1785 1792 1661 PaeTec Communications, Inc.
4766 2426 1530 Korea Telecom (KIX)
7545 1569 1485 TPG Internet Pty Ltd
6478 1551 1475 AT&T Worldnet Services
18566 1606 1412 Covad Communications
17974 1443 1409 PT TELEKOMUNIKASI INDONESIA
4755 1476 1318 TATA Communications formerly
11492 1314 1250 Cable One
10620 1392 1229 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
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
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.31.96.0/19 6876 TeNeT Autonomous System
31.31.160.0/21 50168 Bogal AB
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
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 /8:19 /9:11 /10:26 /11:74 /12:217
/13:447 /14:767 /15:1373 /16:11566 /17:5690 /18:9398
/19:19019 /20:24711 /21:25164 /22:33584 /23:32079 /24:183044
/25:1126 /26:1302 /27:722 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3675 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1505 1551 AT&T Worldnet Services
4323 1380 2569 Time Warner Telecom
10620 1283 1392 TVCABLE BOGOTA
11492 1271 1314 Cable One
7011 1062 1162 Citizens Utilities
1785 1057 1792 PaeTec Communications, Inc.
6503 955 1175 AVANTEL, S.A.
22773 835 1287 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:272 2:61 4:14 5:1 8:342 12:2021
13:1 14:422 15:15 16:3 17:8 20:10
23:3 24:1558 27:654 31:2 32:60 33:3
34:2 37:1 38:714 39:1 40:101 41:2279
44:3 46:731 47:4 49:162 50:109 52:13
55:3 56:2 57:32 58:866 59:492 60:386
61:1149 62:997 63:1926 64:3873 65:2353 66:4367
67:1771 68:1076 69:2905 70:698 71:359 72:1935
73:1 74:2325 75:284 76:343 77:844 78:697
79:453 80:1091 81:817 82:515 83:466 84:645
85:1042 86:554 87:756 88:353 89:1565 90:174
91:3642 92:504 93:1042 94:1226 95:782 96:448
97:251 98:799 99:34 101:49 106:1 107:4
108:72 109:908 110:520 111:715 112:320 113:374
114:504 115:713 116:968 117:674 118:723 119:1077
120:257 121:767 122:1609 123:1042 124:1300 125:1248
128:265 129:170 130:172 131:551 132:100 133:20
134:215 135:49 136:212 137:145 138:299 139:113
140:479 141:173 142:377 143:382 144:473 145:52
146:436 147:208 148:615 149:275 150:161 151:187
152:298 153:180 154:3 155:375 156:185 157:348
158:127 159:372 160:313 161:212 162:278 163:164
164:489 165:351 166:499 167:411 168:722 169:156
170:761 171:69 172:2 173:1250 174:522 175:333
177:43 178:810 180:791 181:4 182:398 183:245
184:228 185:1 186:1056 187:865 188:914 189:1031
190:4750 192:5768 193:4792 194:3494 195:2945 196:1178
197:15 198:3566 199:3873 200:5523 201:1586 202:8392
203:8467 204:4111 205:2310 206:2642 207:3025 208:3902
209:3486 210:2676 211:1352 212:1947 213:1702 214:756
215:66 216:4861 217:1647 218:550 219:381 220:1195
221:472 222:321 223:100
End of report
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