[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Jul 22 16:06:02 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 <pfsinoz en gmail.com>.
Routing Table Report 04:00 +10GMT Sat 23 Jul, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 364842
Prefixes after maximum aggregation: 165720
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 180824
Total ASes present in the Internet Routing Table: 38262
Prefixes per ASN: 9.54
Origin-only ASes present in the Internet Routing Table: 31794
Origin ASes announcing only one prefix: 15298
Transit ASes present in the Internet Routing Table: 5199
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 34
Max AS path prepend of ASN (22394) 31
Prefixes from unregistered ASNs in the Routing Table: 938
Unregistered ASNs in the Routing Table: 547
Number of 32-bit ASNs allocated by the RIRs: 1585
Number of 32-bit ASNs visible in the Routing Table: 1269
Prefixes from 32-bit ASNs in the Routing Table: 2925
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 119
Number of addresses announced to Internet: 2484169792
Equivalent to 148 /8s, 17 /16s and 108 /24s
Percentage of available address space announced: 67.0
Percentage of allocated address space announced: 67.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.1
Total number of prefixes smaller than registry allocations: 152116
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 91236
Total APNIC prefixes after maximum aggregation: 30391
APNIC Deaggregation factor: 3.00
Prefixes being announced from the APNIC address blocks: 87829
Unique aggregates announced from the APNIC address blocks: 37449
APNIC Region origin ASes present in the Internet Routing Table: 4523
APNIC Prefixes per ASN: 19.42
APNIC Region origin ASes announcing only one prefix: 1257
APNIC Region transit ASes present in the Internet Routing Table: 715
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 62
Number of APNIC addresses announced to Internet: 622384672
Equivalent to 37 /8s, 24 /16s and 214 /24s
Percentage of available APNIC address space announced: 78.9
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: 141810
Total ARIN prefixes after maximum aggregation: 73186
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113679
Unique aggregates announced from the ARIN address blocks: 46646
ARIN Region origin ASes present in the Internet Routing Table: 14515
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5568
ARIN Region transit ASes present in the Internet Routing Table: 1533
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 13
Number of ARIN addresses announced to Internet: 802761344
Equivalent to 47 /8s, 217 /16s and 42 /24s
Percentage of available ARIN address space announced: 63.8
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: 86532
Total RIPE prefixes after maximum aggregation: 49288
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 79915
Unique aggregates announced from the RIPE address blocks: 52946
RIPE Region origin ASes present in the Internet Routing Table: 15807
RIPE Prefixes per ASN: 5.06
RIPE Region origin ASes announcing only one prefix: 7879
RIPE Region transit ASes present in the Internet Routing Table: 2501
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 920
Number of RIPE addresses announced to Internet: 483952000
Equivalent to 28 /8s, 216 /16s and 133 /24s
Percentage of available RIPE address space announced: 78.0
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: 33807
Total LACNIC prefixes after maximum aggregation: 7644
LACNIC Deaggregation factor: 4.42
Prefixes being announced from the LACNIC address blocks: 32925
Unique aggregates announced from the LACNIC address blocks: 17088
LACNIC Region origin ASes present in the Internet Routing Table: 1487
LACNIC Prefixes per ASN: 22.14
LACNIC Region origin ASes announcing only one prefix: 442
LACNIC Region transit ASes present in the Internet Routing Table: 275
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: 270
Number of LACNIC addresses announced to Internet: 86429952
Equivalent to 5 /8s, 38 /16s and 209 /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, 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: 8356
Total AfriNIC prefixes after maximum aggregation: 1975
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 6537
Unique aggregates announced from the AfriNIC address blocks: 1997
AfriNIC Region origin ASes present in the Internet Routing Table: 475
AfriNIC Prefixes per ASN: 13.76
AfriNIC Region origin ASes announcing only one prefix: 152
AfriNIC Region transit ASes present in the Internet Routing Table: 101
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: 4
Number of AfriNIC addresses announced to Internet: 24441856
Equivalent to 1 /8s, 116 /16s and 244 /24s
Percentage of available AfriNIC address space announced: 36.4
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 2470 11044 938 Korea Telecom (KIX)
17974 1794 508 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 85 TPG Internet Pty Ltd
4755 1507 635 171 TATA Communications formerly
7552 1298 1064 7 Vietel Corporation
24560 1156 336 187 Bharti Airtel Ltd., Telemedia
9829 1108 923 47 BSNL National Internet Backbo
9583 1079 81 520 Sify Limited
4808 1051 2092 299 CNCGROUP IP network: China169
17488 967 187 107 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 3616 3818 238 bellsouth.net, inc.
18566 1913 365 241 Covad Communications
1785 1811 681 122 PaeTec Communications, Inc.
4323 1615 1082 401 Time Warner Telecom
20115 1590 1538 623 Charter Communications
19262 1411 4760 391 Verizon Global Networks
7018 1364 7069 891 AT&T WorldNet Services
22773 1353 2897 89 Cox Communications, Inc.
7029 1293 791 304 Windstream Communications Inc
2386 1258 520 907 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
34984 534 106 185 BILISIM TELEKOM
6830 512 1788 316 UPC Distribution Services
3292 468 2078 403 TDC Tele Danmark
20940 459 132 354 Akamai Technologies European
12479 455 593 7 Uni2 Autonomous System
8866 453 133 26 Bulgarian Telecommunication C
29049 432 32 47 AzerSat LLC.
3320 424 8151 370 Deutsche Telekom AG
8551 403 354 44 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 1559 287 163 TVCABLE BOGOTA
8151 1420 2746 351 UniNet S.A. de C.V.
28573 1277 995 78 NET Servicos de Comunicao S.A
7303 1009 513 178 Telecom Argentina Stet-France
6503 750 354 74 AVANTEL, S.A.
14420 700 56 85 CORPORACION NACIONAL DE TELEC
22047 578 322 17 VTR PUNTO NET S.A.
3816 532 232 97 Empresa Nacional de Telecomun
7738 516 986 31 Telecomunicacoes da Bahia S.A
27947 509 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 817 445 11 TEDATA
24863 794 147 42 LINKdotNET AS number
15475 512 74 8 Nile Online
36992 315 415 15 Etisalat MISR
24835 304 78 10 RAYA Telecom - Egypt
3741 265 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 226 13 5 Starcomms Nigeria Limited
15706 158 32 6 Sudatel Internet Exchange Aut
29571 158 17 11 Ci Telecom Autonomous system
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 3616 3818 238 bellsouth.net, inc.
23456 2925 710 1575 32-bit ASN transition
4766 2470 11044 938 Korea Telecom (KIX)
18566 1913 365 241 Covad Communications
1785 1811 681 122 PaeTec Communications, Inc.
17974 1794 508 32 PT TELEKOMUNIKASI INDONESIA
4323 1615 1082 401 Time Warner Telecom
20115 1590 1538 623 Charter Communications
10620 1559 287 163 TVCABLE BOGOTA
7545 1555 301 85 TPG Internet Pty Ltd
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 1794 1762 PT TELEKOMUNIKASI INDONESIA
1785 1811 1689 PaeTec Communications, Inc.
18566 1913 1672 Covad Communications
4766 2470 1532 Korea Telecom (KIX)
7545 1555 1470 TPG Internet Pty Ltd
10620 1559 1396 TVCABLE BOGOTA
23456 2925 1350 32-bit ASN transition
4755 1507 1336 TATA Communications formerly
7552 1298 1291 Vietel Corporation
22773 1353 1264 Cox Communications, Inc.
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
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 /10:27 /11:80 /12:232
/13:465 /14:798 /15:1400 /16:12040 /17:5888 /18:9829
/19:19533 /20:26166 /21:26261 /22:34965 /23:33886 /24:189915
/25:1093 /26:1269 /27:739 /28:207 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2236 3616 bellsouth.net, inc.
18566 1869 1913 Covad Communications
10620 1454 1559 TVCABLE BOGOTA
23456 1446 2925 32-bit ASN transition
11492 1096 1142 Cable One
7011 1056 1158 Citizens Utilities
1785 1054 1811 PaeTec Communications, Inc.
7029 1040 1293 Windstream Communications Inc
6478 997 1025 AT&T Worldnet Services
22773 868 1353 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:331 2:45 4:16 5:1 6:3 8:340
12:1965 13:1 14:490 15:15 16:3 17:5
20:10 23:14 24:1680 27:842 31:504 32:64
33:4 34:2 36:4 38:730 40:104 41:2603
42:35 44:3 46:1043 47:3 49:198 50:383
52:13 54:2 55:7 56:2 57:35 58:860
59:481 60:385 61:1181 62:1033 63:1932 64:3990
65:2299 66:3882 67:1886 68:1109 69:3060 70:778
71:373 72:1865 74:2431 75:333 76:341 77:881
78:704 79:463 80:1114 81:839 82:497 83:465
84:691 85:1057 86:519 87:764 88:333 89:1533
90:224 91:3957 92:526 93:1054 94:1338 95:859
96:419 97:263 98:891 99:37 101:77 103:140
106:73 107:24 108:73 109:1022 110:612 111:714
112:305 113:413 114:555 115:683 116:984 117:690
118:863 119:1174 120:315 121:676 122:1607 123:976
124:1304 125:1279 128:246 129:171 130:169 131:578
132:113 133:21 134:214 135:52 136:215 137:138
138:300 139:116 140:477 141:253 142:403 143:414
144:478 145:54 146:454 147:216 148:672 149:249
150:159 151:189 152:338 153:182 154:5 155:397
156:199 157:351 158:140 159:455 160:315 161:203
162:310 163:166 164:506 165:367 166:531 167:433
168:740 169:153 170:849 171:80 172:1 173:1619
174:628 175:384 176:143 177:170 178:1005 180:907
181:23 182:508 183:234 184:345 185:1 186:1308
187:776 188:896 189:946 190:5000 192:5913 193:4972
194:3517 195:3018 196:1291 197:42 198:3573 199:3977
200:5573 201:1473 202:8416 203:8448 204:4229 205:2331
206:2669 207:2808 208:3989 209:3434 210:2680 211:1452
212:2087 213:1743 214:769 215:70 216:4951 217:1650
218:545 219:348 220:1201 221:495 222:360 223:220
End of report
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