[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Mayo 13 15:59:43 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 14 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356656
Prefixes after maximum aggregation: 161598
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176105
Total ASes present in the Internet Routing Table: 37552
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31389
Origin ASes announcing only one prefix: 15082
Transit ASes present in the Internet Routing Table: 5092
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 626
Unregistered ASNs in the Routing Table: 320
Number of 32-bit ASNs allocated by the RIRs: 1348
Number of 32-bit ASNs visible in the Routing Table: 1071
Prefixes from 32-bit ASNs in the Routing Table: 2417
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 156
Number of addresses announced to Internet: 2425507776
Equivalent to 144 /8s, 146 /16s and 79 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 148116
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89380
Total APNIC prefixes after maximum aggregation: 29933
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 85747
Unique aggregates announced from the APNIC address blocks: 36599
APNIC Region origin ASes present in the Internet Routing Table: 4441
APNIC Prefixes per ASN: 19.31
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 705
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614205216
Equivalent to 36 /8s, 156 /16s and 7 /24s
Percentage of available APNIC address space announced: 77.9
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: 140013
Total ARIN prefixes after maximum aggregation: 71448
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112260
Unique aggregates announced from the ARIN address blocks: 45485
ARIN Region origin ASes present in the Internet Routing Table: 14368
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5485
ARIN Region transit ASes present in the Internet Routing Table: 1497
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 800054528
Equivalent to 47 /8s, 175 /16s and 221 /24s
Percentage of available ARIN address space announced: 63.6
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: 84162
Total RIPE prefixes after maximum aggregation: 48126
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77641
Unique aggregates announced from the RIPE address blocks: 51249
RIPE Region origin ASes present in the Internet Routing Table: 15589
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7801
RIPE Region transit ASes present in the Internet Routing Table: 2460
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 790
Number of RIPE addresses announced to Internet: 468684800
Equivalent to 27 /8s, 239 /16s and 144 /24s
Percentage of available RIPE address space announced: 75.5
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: 32698
Total LACNIC prefixes after maximum aggregation: 7496
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31756
Unique aggregates announced from the LACNIC address blocks: 16683
LACNIC Region origin ASes present in the Internet Routing Table: 1449
LACNIC Prefixes per ASN: 21.92
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 268
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 217
Number of LACNIC addresses announced to Internet: 83360256
Equivalent to 4 /8s, 247 /16s and 250 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7770
Total AfriNIC prefixes after maximum aggregation: 1867
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6122
Unique aggregates announced from the AfriNIC address blocks: 1939
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.70
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23095040
Equivalent to 1 /8s, 96 /16s and 103 /24s
Percentage of available AfriNIC address space announced: 34.4
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 2452 9493 916 Korea Telecom (KIX)
17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1549 301 87 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
7552 1105 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
4808 1063 2130 297 CNCGROUP IP network: China169
9829 1039 874 51 BSNL National Internet Backbo
17488 935 165 103 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 3647 3822 255 bellsouth.net, inc.
4323 1979 1081 396 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1775 681 124 PaeTec Communications, Inc.
6478 1678 314 50 AT&T Worldnet Services
20115 1535 1539 631 Charter Communications
19262 1499 4949 299 Verizon Global Networks
7018 1357 6911 886 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
11492 1279 240 15 Cable One
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 519 1780 321 UPC Distribution Services
34984 512 106 182 BILISIM TELEKOM
3292 459 1998 392 TDC Tele Danmark
20940 447 131 342 Akamai Technologies European
8866 442 134 26 Bulgarian Telecommunication C
29049 442 32 44 AzerSat LLC.
12479 430 577 6 Uni2 Autonomous System
3320 420 7608 367 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 397 1802 310 UUNET - Commercial IP service
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 1476 272 154 TVCABLE BOGOTA
8151 1370 2702 362 UniNet S.A. de C.V.
28573 1315 990 86 NET Servicos de Comunicao S.A
7303 931 470 152 Telecom Argentina Stet-France
6503 732 354 73 AVANTEL, S.A.
14420 667 54 91 CORPORACION NACIONAL DE TELEC
22047 555 310 15 VTR PUNTO NET S.A.
3816 521 227 100 Empresa Nacional de Telecomun
13489 499 241 121 Orbitel S.A. E.S.P.
11172 493 84 83 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 888 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 206 78 10 RAYA Telecom - Egypt
33776 200 12 11 Starcomms Nigeria Limited
29571 162 17 11 Ci Telecom Autonomous system
16637 150 441 86 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 3647 3822 255 bellsouth.net, inc.
4766 2452 9493 916 Korea Telecom (KIX)
23456 2417 685 1317 32-bit ASN transition
4323 1979 1081 396 Time Warner Telecom
17974 1834 516 32 PT TELEKOMUNIKASI INDONESIA
18566 1822 357 232 Covad Communications
1785 1775 681 124 PaeTec Communications, Inc.
6478 1678 314 50 AT&T Worldnet Services
7545 1549 301 87 TPG Internet Pty Ltd
20115 1535 1539 631 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1834 1802 PT TELEKOMUNIKASI INDONESIA
1785 1775 1651 PaeTec Communications, Inc.
6478 1678 1628 AT&T Worldnet Services
18566 1822 1590 Covad Communications
4323 1979 1583 Time Warner Telecom
4766 2452 1536 Korea Telecom (KIX)
7545 1549 1462 TPG Internet Pty Ltd
10620 1476 1322 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
11492 1279 1264 Cable One
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
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
23502 UNALLOCATED 12.44.44.0/24 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
31.134.128.0/18 42668 RIPE Network Coordination Cen
31.220.160.0/19 29072 RDTC Autonomous System ISP at
31.222.96.0/22 29119 ServiHosting Autonomous Syste
31.222.100.0/22 29119 ServiHosting Autonomous Syste
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 /8:20 /9:12 /10:28 /11:78 /12:223
/13:459 /14:790 /15:1390 /16:11723 /17:5766 /18:9707
/19:19307 /20:25552 /21:25796 /22:34071 /23:32878 /24:185607
/25:1092 /26:1271 /27:709 /28:161 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2247 3647 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1632 1678 AT&T Worldnet Services
10620 1366 1476 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1188 2417 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1050 1775 PaeTec Communications, Inc.
4323 888 1979 Time Warner Telecom
22773 846 1329 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:267 2:44 4:14 5:1 6:3 8:352
12:1985 13:1 14:456 15:15 16:3 17:8
20:10 23:7 24:1639 27:743 31:328 32:60
33:4 34:2 37:1 38:731 40:101 41:2501
42:5 44:3 46:903 47:4 49:177 50:401
52:13 55:6 56:2 57:30 58:848 59:485
60:387 61:1254 62:974 63:1925 64:3928 65:2299
66:4140 67:1866 68:1093 69:2986 70:706 71:350
72:1884 73:1 74:2345 75:306 76:342 77:865
78:689 79:463 80:1096 81:817 82:493 83:449
84:625 85:1071 86:598 87:746 88:325 89:1566
90:202 91:3732 92:512 93:1054 94:1251 95:803
96:483 97:246 98:828 99:35 101:59 103:12
106:1 107:6 108:85 109:944 110:585 111:711
112:319 113:399 114:532 115:666 116:954 117:683
118:818 119:1135 120:309 121:678 122:1621 123:1079
124:1257 125:1223 128:259 129:166 130:165 131:568
132:110 133:19 134:218 135:49 136:214 137:143
138:304 139:106 140:480 141:240 142:401 143:402
144:487 145:53 146:440 147:210 148:591 149:243
150:171 151:187 152:310 153:179 154:3 155:395
156:194 157:352 158:131 159:387 160:315 161:207
162:279 163:163 164:499 165:352 166:514 167:431
168:725 169:153 170:794 171:77 172:1 173:1557
174:543 175:370 177:120 178:908 180:840 181:16
182:439 183:205 184:262 185:1 186:1169 187:749
188:829 189:907 190:4793 192:5783 193:4843 194:3477
195:2973 196:1209 197:17 198:3570 199:3893 200:5535
201:1494 202:8359 203:8467 204:4111 205:2328 206:2725
207:2913 208:3966 209:3423 210:2731 211:1386 212:1973
213:1717 214:730 215:69 216:4818 217:1630 218:565
219:370 220:1203 221:483 222:342 223:145
End of report
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