[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Mayo 20 15:59:35 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 21 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357743
Prefixes after maximum aggregation: 161995
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176757
Total ASes present in the Internet Routing Table: 37632
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31443
Origin ASes announcing only one prefix: 15107
Transit ASes present in the Internet Routing Table: 5101
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 647
Unregistered ASNs in the Routing Table: 338
Number of 32-bit ASNs allocated by the RIRs: 1366
Number of 32-bit ASNs visible in the Routing Table: 1088
Prefixes from 32-bit ASNs in the Routing Table: 2459
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 166
Number of addresses announced to Internet: 2432900032
Equivalent to 145 /8s, 3 /16s and 27 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 148733
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89422
Total APNIC prefixes after maximum aggregation: 30028
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85798
Unique aggregates announced from the APNIC address blocks: 36687
APNIC Region origin ASes present in the Internet Routing Table: 4453
APNIC Prefixes per ASN: 19.27
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 615312672
Equivalent to 36 /8s, 172 /16s and 237 /24s
Percentage of available APNIC address space announced: 78.0
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: 140448
Total ARIN prefixes after maximum aggregation: 71554
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112638
Unique aggregates announced from the ARIN address blocks: 45620
ARIN Region origin ASes present in the Internet Routing Table: 14381
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5494
ARIN Region transit ASes present in the Internet Routing Table: 1498
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: 801671424
Equivalent to 47 /8s, 200 /16s and 137 /24s
Percentage of available ARIN address space announced: 63.7
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: 84534
Total RIPE prefixes after maximum aggregation: 48247
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78018
Unique aggregates announced from the RIPE address blocks: 51632
RIPE Region origin ASes present in the Internet Routing Table: 15619
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7813
RIPE Region transit ASes present in the Internet Routing Table: 2464
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 805
Number of RIPE addresses announced to Internet: 472636160
Equivalent to 28 /8s, 43 /16s and 219 /24s
Percentage of available RIPE address space announced: 76.1
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: 32829
Total LACNIC prefixes after maximum aggregation: 7512
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31866
Unique aggregates announced from the LACNIC address blocks: 16758
LACNIC Region origin ASes present in the Internet Routing Table: 1456
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 220
Number of LACNIC addresses announced to Internet: 83532288
Equivalent to 4 /8s, 250 /16s and 154 /24s
Percentage of available LACNIC address space announced: 55.3
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: 7836
Total AfriNIC prefixes after maximum aggregation: 1877
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6175
Unique aggregates announced from the AfriNIC address blocks: 1909
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 100
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: 23174656
Equivalent to 1 /8s, 97 /16s and 158 /24s
Percentage of available AfriNIC address space announced: 34.5
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 2457 9494 918 Korea Telecom (KIX)
17974 1832 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 87 TPG Internet Pty Ltd
4755 1472 635 169 TATA Communications formerly
24560 1153 336 184 Bharti Airtel Ltd., Telemedia
7552 1123 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
4808 1080 2141 298 CNCGROUP IP network: China169
9829 1039 874 51 BSNL National Internet Backbo
18101 935 116 142 Reliance Infocom Ltd Internet
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 3645 3822 255 bellsouth.net, inc.
4323 1976 1081 397 Time Warner Telecom
18566 1860 354 267 Covad Communications
1785 1786 681 123 PaeTec Communications, Inc.
6478 1693 315 55 AT&T Worldnet Services
20115 1538 1540 635 Charter Communications
19262 1496 4943 300 Verizon Global Networks
7018 1365 7069 890 AT&T WorldNet Services
22773 1330 2897 88 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 520 1780 321 UPC Distribution Services
34984 514 106 182 BILISIM TELEKOM
3292 460 2062 395 TDC Tele Danmark
20940 457 134 351 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 432 577 6 Uni2 Autonomous System
3320 426 8153 371 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 395 1802 309 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 1481 273 154 TVCABLE BOGOTA
8151 1375 2702 362 UniNet S.A. de C.V.
28573 1314 991 86 NET Servicos de Comunicao S.A
7303 925 470 151 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 563 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 511 254 124 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 894 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 163 19 12 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 3645 3822 255 bellsouth.net, inc.
23456 2459 631 1341 32-bit ASN transition
4766 2457 9494 918 Korea Telecom (KIX)
4323 1976 1081 397 Time Warner Telecom
18566 1860 354 267 Covad Communications
17974 1832 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 123 PaeTec Communications, Inc.
6478 1693 315 55 AT&T Worldnet Services
7545 1556 301 87 TPG Internet Pty Ltd
20115 1538 1540 635 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 1832 1800 PT TELEKOMUNIKASI INDONESIA
1785 1786 1663 PaeTec Communications, Inc.
6478 1693 1638 AT&T Worldnet Services
18566 1860 1593 Covad Communications
4323 1976 1579 Time Warner Telecom
4766 2457 1539 Korea Telecom (KIX)
7545 1556 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1472 1303 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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /11:79 /12:226
/13:461 /14:793 /15:1393 /16:11769 /17:5810 /18:9731
/19:19329 /20:25643 /21:25885 /22:34217 /23:32989 /24:186103
/25:1087 /26:1274 /27:713 /28:165 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3645 bellsouth.net, inc.
18566 1824 1860 Covad Communications
6478 1647 1693 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1204 2459 32-bit ASN transition
7011 1060 1159 Citizens Utilities
1785 1051 1786 PaeTec Communications, Inc.
4323 886 1976 Time Warner Telecom
22773 846 1330 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:279 2:39 4:14 5:1 6:3 8:352
12:1985 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1633 27:753 31:345 32:60
33:4 34:2 37:1 38:738 40:101 41:2537
42:5 44:3 46:920 47:4 49:194 50:415
52:13 55:3 56:2 57:30 58:844 59:481
60:387 61:1235 62:960 63:1935 64:3941 65:2292
66:4158 67:1846 68:1092 69:2985 70:704 71:352
72:1883 73:1 74:2351 75:303 76:340 77:870
78:709 79:464 80:1094 81:821 82:490 83:447
84:629 85:1069 86:594 87:749 88:328 89:1556
90:204 91:3771 92:516 93:1053 94:1279 95:817
96:504 97:249 98:835 99:35 101:60 103:12
106:1 107:7 108:85 109:950 110:601 111:715
112:302 113:401 114:534 115:667 116:956 117:691
118:821 119:1145 120:308 121:677 122:1627 123:1001
124:1265 125:1228 128:262 129:176 130:164 131:573
132:109 133:19 134:218 135:48 136:215 137:143
138:305 139:112 140:487 141:239 142:402 143:402
144:481 145:54 146:444 147:209 148:589 149:243
150:172 151:186 152:306 153:178 154:3 155:396
156:194 157:352 158:135 159:387 160:317 161:207
162:279 163:163 164:501 165:354 166:516 167:433
168:729 169:152 170:794 171:77 172:1 173:1566
174:551 175:374 177:128 178:918 180:844 181:17
182:446 183:207 184:272 185:1 186:1164 187:735
188:842 189:897 190:4805 192:5790 193:4854 194:3482
195:2982 196:1210 197:19 198:3584 199:3908 200:5540
201:1486 202:8357 203:8427 204:4158 205:2326 206:2730
207:2913 208:3964 209:3462 210:2736 211:1392 212:1972
213:1734 214:735 215:71 216:4899 217:1623 218:563
219:362 220:1200 221:483 222:336 223:148
End of report
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