[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Mayo 27 16:01:07 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 28 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 358362
Prefixes after maximum aggregation: 162138
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 177469
Total ASes present in the Internet Routing Table: 37701
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31497
Origin ASes announcing only one prefix: 15121
Transit ASes present in the Internet Routing Table: 5100
Transit-only ASes present in the Internet Routing Table: 139
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: 705
Unregistered ASNs in the Routing Table: 376
Number of 32-bit ASNs allocated by the RIRs: 1389
Number of 32-bit ASNs visible in the Routing Table: 1104
Prefixes from 32-bit ASNs in the Routing Table: 2503
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 289
Number of addresses announced to Internet: 2437036992
Equivalent to 145 /8s, 66 /16s and 59 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 149159
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89221
Total APNIC prefixes after maximum aggregation: 30038
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85654
Unique aggregates announced from the APNIC address blocks: 36698
APNIC Region origin ASes present in the Internet Routing Table: 4461
APNIC Prefixes per ASN: 19.20
APNIC Region origin ASes announcing only one prefix: 1245
APNIC Region transit ASes present in the Internet Routing Table: 703
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 616629792
Equivalent to 36 /8s, 193 /16s and 6 /24s
Percentage of available APNIC address space announced: 78.2
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: 140454
Total ARIN prefixes after maximum aggregation: 71446
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112718
Unique aggregates announced from the ARIN address blocks: 45895
ARIN Region origin ASes present in the Internet Routing Table: 14398
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5492
ARIN Region transit ASes present in the Internet Routing Table: 1508
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: 801841408
Equivalent to 47 /8s, 203 /16s and 33 /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: 84958
Total RIPE prefixes after maximum aggregation: 48453
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78225
Unique aggregates announced from the RIPE address blocks: 51823
RIPE Region origin ASes present in the Internet Routing Table: 15639
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7820
RIPE Region transit ASes present in the Internet Routing Table: 2461
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: 815
Number of RIPE addresses announced to Internet: 474301952
Equivalent to 28 /8s, 69 /16s and 70 /24s
Percentage of available RIPE address space announced: 76.4
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: 32990
Total LACNIC prefixes after maximum aggregation: 7492
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 32033
Unique aggregates announced from the LACNIC address blocks: 16834
LACNIC Region origin ASes present in the Internet Routing Table: 1458
LACNIC Prefixes per ASN: 21.97
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 224
Number of LACNIC addresses announced to Internet: 83999744
Equivalent to 5 /8s, 1 /16s and 188 /24s
Percentage of available LACNIC address space announced: 55.6
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: 8016
Total AfriNIC prefixes after maximum aggregation: 1888
AfriNIC Deaggregation factor: 4.25
Prefixes being announced from the AfriNIC address blocks: 6339
Unique aggregates announced from the AfriNIC address blocks: 1891
AfriNIC Region origin ASes present in the Internet Routing Table: 452
AfriNIC Prefixes per ASN: 14.02
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 102
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: 23157760
Equivalent to 1 /8s, 97 /16s and 92 /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 2461 9500 922 Korea Telecom (KIX)
17974 1852 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1534 301 85 TPG Internet Pty Ltd
4755 1473 635 169 TATA Communications formerly
24560 1155 337 187 Bharti Airtel Ltd., Telemedia
7552 1140 1064 7 Vietel Corporation
4808 1081 2141 302 CNCGROUP IP network: China169
9583 1076 79 507 Sify Limited
9829 1035 873 54 BSNL National Internet Backbo
18101 931 116 141 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 3641 3822 254 bellsouth.net, inc.
4323 1972 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
1785 1789 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
20115 1535 1540 633 Charter Communications
19262 1480 4916 330 Verizon Global Networks
7018 1363 7068 887 AT&T WorldNet Services
22773 1335 2897 88 Cox Communications, Inc.
11492 1280 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 516 1780 319 UPC Distribution Services
34984 516 106 179 BILISIM TELEKOM
3292 462 2078 397 TDC Tele Danmark
20940 456 133 350 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 426 8152 371 Deutsche Telekom AG
8551 406 355 45 Bezeq International
3301 398 1839 347 TeliaNet Sweden
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 1492 274 156 TVCABLE BOGOTA
8151 1379 2710 364 UniNet S.A. de C.V.
28573 1321 991 88 NET Servicos de Comunicao S.A
7303 958 504 150 Telecom Argentina Stet-France
6503 727 354 70 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 539 227 101 Empresa Nacional de Telecomun
13489 515 262 121 Orbitel S.A. E.S.P.
11172 495 84 84 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 871 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 543 90 8 Nile Online
36992 290 315 18 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 208 78 10 RAYA Telecom - Egypt
33776 202 11 8 Starcomms Nigeria Limited
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 3641 3822 254 bellsouth.net, inc.
23456 2503 631 1363 32-bit ASN transition
4766 2461 9500 922 Korea Telecom (KIX)
4323 1972 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
17974 1852 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
20115 1535 1540 633 Charter Communications
7545 1534 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 1852 1820 PT TELEKOMUNIKASI INDONESIA
1785 1789 1666 PaeTec Communications, Inc.
6478 1704 1654 AT&T Worldnet Services
18566 1875 1604 Covad Communications
4323 1972 1573 Time Warner Telecom
4766 2461 1539 Korea Telecom (KIX)
7545 1534 1449 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1473 1304 TATA Communications formerly
11492 1280 1265 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 /12:228
/13:460 /14:794 /15:1394 /16:11758 /17:5834 /18:9760
/19:19296 /20:25693 /21:25898 /22:34097 /23:33118 /24:186639
/25:1090 /26:1269 /27:713 /28:166 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2242 3641 bellsouth.net, inc.
18566 1838 1875 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1220 2503 32-bit ASN transition
7011 1061 1160 Citizens Utilities
1785 1051 1789 PaeTec Communications, Inc.
4323 885 1972 Time Warner Telecom
22773 850 1335 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 2:48 4:16 5:1 6:3 8:353
12:1984 13:1 14:461 15:15 16:3 17:8
20:10 23:7 24:1645 27:774 31:351 32:60
33:4 34:2 37:1 38:739 40:101 41:2527
42:5 44:3 46:930 47:3 49:195 50:422
52:13 54:2 55:6 56:2 57:30 58:846
59:479 60:387 61:1235 62:1044 63:1940 64:3947
65:2293 66:4148 67:1873 68:1085 69:2992 70:706
71:352 72:1891 73:1 74:2358 75:302 76:341
77:870 78:706 79:464 80:1083 81:823 82:494
83:437 84:677 85:1061 86:593 87:754 88:330
89:1527 90:203 91:3788 92:517 93:1049 94:1280
95:802 96:506 97:249 98:850 99:35 101:58
103:28 106:1 107:7 108:84 109:949 110:600
111:712 112:304 113:400 114:535 115:671 116:946
117:693 118:827 119:1146 120:308 121:670 122:1621
123:999 124:1262 125:1230 128:262 129:173 130:164
131:571 132:109 133:19 134:213 135:48 136:214
137:143 138:300 139:112 140:482 141:239 142:403
143:400 144:483 145:54 146:447 147:209 148:590
149:242 150:168 151:186 152:325 153:177 154:3
155:397 156:194 157:354 158:137 159:387 160:317
161:207 162:282 163:164 164:498 165:355 166:515
167:428 168:733 169:155 170:805 171:77 172:1
173:1560 174:550 175:370 176:129 177:135 178:988
180:848 181:17 182:453 183:209 184:285 185:1
186:1174 187:770 188:842 189:903 190:4816 192:5840
193:4893 194:3500 195:2985 196:1224 197:19 198:3576
199:3905 200:5537 201:1484 202:8317 203:8405 204:4172
205:2328 206:2677 207:2874 208:3966 209:3471 210:2737
211:1394 212:1989 213:1735 214:729 215:72 216:4905
217:1632 218:565 219:363 220:1201 221:491 222:341
223:147
End of report
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