[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Ene 28 16:28:41 BRST 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 29 Jan, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 340429
Prefixes after maximum aggregation: 154694
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 169224
Total ASes present in the Internet Routing Table: 35707
Prefixes per ASN: 9.53
Origin-only ASes present in the Internet Routing Table: 30778
Origin ASes announcing only one prefix: 14951
Transit ASes present in the Internet Routing Table: 4929
Transit-only ASes present in the Internet Routing Table: 118
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: 321
Unregistered ASNs in the Routing Table: 126
Number of 32-bit ASNs allocated by the RIRs: 1051
Prefixes from 32-bit ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 215
Number of addresses announced to Internet: 2348554048
Equivalent to 139 /8s, 252 /16s and 23 /24s
Percentage of available address space announced: 63.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 96.8
Percentage of address space in use by end-sites: 88.0
Total number of prefixes smaller than registry allocations: 139482
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84978
Total APNIC prefixes after maximum aggregation: 28832
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 81750
Unique aggregates announced from the APNIC address blocks: 35514
APNIC Region origin ASes present in the Internet Routing Table: 4313
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 690
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 20
Number of APNIC addresses announced to Internet: 586409504
Equivalent to 34 /8s, 243 /16s and 230 /24s
Percentage of available APNIC address space announced: 79.4
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, 42/8, 43/8, 49/8,
58/8, 59/8, 60/8, 61/8, 101/8, 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: 138008
Total ARIN prefixes after maximum aggregation: 70693
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 108934
Unique aggregates announced from the ARIN address blocks: 44467
ARIN Region origin ASes present in the Internet Routing Table: 14154
ARIN Prefixes per ASN: 7.70
ARIN Region origin ASes announcing only one prefix: 5405
ARIN Region transit ASes present in the Internet Routing Table: 1470
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 751502720
Equivalent to 44 /8s, 203 /16s and 5 /24s
Percentage of available ARIN address space announced: 63.1
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, 47/8, 48/8, 50/8, 52/8, 54/8,
55/8, 56/8, 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,
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: 80950
Total RIPE prefixes after maximum aggregation: 46146
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 74326
Unique aggregates announced from the RIPE address blocks: 48334
RIPE Region origin ASes present in the Internet Routing Table: 15230
RIPE Prefixes per ASN: 4.88
RIPE Region origin ASes announcing only one prefix: 7770
RIPE Region transit ASes present in the Internet Routing Table: 2370
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 456913728
Equivalent to 27 /8s, 59 /16s and 243 /24s
Percentage of available RIPE address space announced: 75.7
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, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 31587
Total LACNIC prefixes after maximum aggregation: 7249
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 30348
Unique aggregates announced from the LACNIC address blocks: 15794
LACNIC Region origin ASes present in the Internet Routing Table: 1424
LACNIC Prefixes per ASN: 21.31
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 250
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 80151168
Equivalent to 4 /8s, 199 /16s and 2 /24s
Percentage of available LACNIC address space announced: 59.7
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 4684
Total AfriNIC prefixes after maximum aggregation: 1653
AfriNIC Deaggregation factor: 2.83
Prefixes being announced from the AfriNIC address blocks: 3503
Unique aggregates announced from the AfriNIC address blocks: 1581
AfriNIC Region origin ASes present in the Internet Routing Table: 407
AfriNIC Prefixes per ASN: 8.61
AfriNIC Region origin ASes announcing only one prefix: 126
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 18336512
Equivalent to 1 /8s, 23 /16s and 203 /24s
Percentage of available AfriNIC address space announced: 36.4
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1915 9485 526 Korea Telecom (KIX)
7545 1594 301 82 TPG Internet Pty Ltd
4755 1401 636 159 TATA Communications formerly
17974 1395 467 27 PT TELEKOMUNIKASI INDONESIA
24560 1094 317 180 Bharti Airtel Ltd., Telemedia
9583 1044 76 487 Sify Limited
4808 1028 2108 287 CNCGROUP IP network: China169
17488 950 162 103 Hathway IP Over Cable Interne
18101 924 117 142 Reliance Infocom Ltd Internet
9829 847 739 75 BSNL National Internet Backbo
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 3710 3855 265 bellsouth.net, inc.
4323 2629 1109 404 Time Warner Telecom
19262 1841 4943 285 Verizon Global Networks
1785 1787 697 133 PaeTec Communications, Inc.
20115 1519 1529 643 Charter Communications
6478 1476 291 56 AT&T Worldnet Services
7018 1360 6674 875 AT&T WorldNet Services
2386 1297 553 933 AT&T Data Communications Serv
22773 1274 2864 77 Cox Communications, Inc.
11492 1266 235 81 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 514 1764 319 UPC Distribution Services
9198 465 266 14 Kazakhtelecom Data Network Ad
34984 458 97 137 BILISIM TELEKOM
3292 447 2011 390 TDC Tele Danmark
8866 438 133 23 Bulgarian Telecommunication C
12479 412 577 6 Uni2 Autonomous System
3320 403 7619 352 Deutsche Telekom AG
8551 402 353 46 Bezeq International
702 396 1816 309 UUNET - Commercial IP service
20940 393 91 303 Akamai Technologies European
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 1358 252 165 TVCABLE BOGOTA
8151 1329 2627 355 UniNet S.A. de C.V.
28573 1245 959 82 NET Servicos de Comunicao S.A
6503 1149 355 78 AVANTEL, S.A.
7303 885 461 114 Telecom Argentina Stet-France
14420 614 55 90 CORPORACION NACIONAL DE TELEC
22047 566 310 15 VTR PUNTO NET S.A.
3816 526 222 99 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 456 34 31 Telefonica del Sur 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
3741 264 987 226 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
33776 194 12 15 Starcomms Nigeria Limited
29571 193 17 11 Ci Telecom Autonomous system
16637 161 440 90 MTN Network Solutions
36874 139 24 6 Cybersmart
29975 131 475 17 Vodacom
37061 108 9 2 One Communications Ltd
15706 106 16 5 Sudatel Internet Exchange Aut
37054 85 5 21 Data Telecom Service
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 3710 3855 265 bellsouth.net, inc.
4323 2629 1109 404 Time Warner Telecom
4766 1915 9485 526 Korea Telecom (KIX)
19262 1841 4943 285 Verizon Global Networks
1785 1787 697 133 PaeTec Communications, Inc.
7545 1594 301 82 TPG Internet Pty Ltd
20115 1519 1529 643 Charter Communications
6478 1476 291 56 AT&T Worldnet Services
4755 1401 636 159 TATA Communications formerly
17974 1395 467 27 PT TELEKOMUNIKASI INDONESIA
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 2629 2225 Time Warner Telecom
1785 1787 1654 PaeTec Communications, Inc.
19262 1841 1556 Verizon Global Networks
7545 1594 1512 TPG Internet Pty Ltd
6478 1476 1420 AT&T Worldnet Services
4766 1915 1389 Korea Telecom (KIX)
17974 1395 1368 PT TELEKOMUNIKASI INDONESIA
4755 1401 1242 TATA Communications formerly
22773 1274 1197 Cox Communications, Inc.
10620 1358 1193 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
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
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
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
41.57.192.0/18 22750 BCSNET
41.78.192.0/22 30999 Emtel is GSM, 3G and ISP in M
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 /9:10 /10:26 /11:71 /12:214
/13:440 /14:765 /15:1358 /16:11463 /17:5579 /18:9215
/19:18750 /20:24139 /21:24535 /22:32307 /23:30984 /24:177748
/25:979 /26:1061 /27:578 /28:162 /29:16 /30:2
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2289 3710 bellsouth.net, inc.
6478 1430 1476 AT&T Worldnet Services
4323 1417 2629 Time Warner Telecom
10620 1249 1358 TVCABLE BOGOTA
11492 1222 1266 Cable One
18566 1092 1111 Covad Communications
7011 1065 1168 Citizens Utilities
1785 1059 1787 PaeTec Communications, Inc.
19262 954 1841 Verizon Global Networks
6503 933 1149 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:167 2:30 4:13 5:1 8:331 12:2029
13:1 14:381 15:15 16:3 17:8 20:9
23:1 24:1466 27:548 32:61 33:5 34:2
36:1 37:1 38:693 40:101 41:1617 42:1
44:3 46:514 47:5 49:143 50:74 52:12
55:6 56:2 57:30 58:870 59:483 60:391
61:1119 62:783 63:1924 64:3761 65:2331 66:4068
67:1754 68:998 69:2866 70:717 71:392 72:1987
73:1 74:2302 75:293 76:329 77:851 78:692
79:436 80:1022 81:767 82:508 83:470 84:458
85:1044 86:512 87:727 88:359 89:1579 90:159
91:3424 92:492 93:1041 94:1154 95:779 96:413
97:249 98:756 99:33 101:24 107:3 108:81
109:856 110:471 111:695 112:313 113:346 114:495
115:635 116:879 117:673 118:646 119:1031 120:234
121:702 122:1610 123:1050 124:1269 125:1213 128:247
129:158 130:174 131:570 132:110 133:20 134:218
135:49 136:216 137:147 138:293 139:120 140:491
141:198 142:360 143:377 144:488 145:51 146:426
147:194 148:625 149:273 150:151 151:230 152:303
153:175 154:3 155:346 156:174 157:341 158:128
159:377 160:313 161:203 162:277 163:117 164:484
165:336 166:481 167:422 168:739 169:150 170:746
171:66 172:1 173:1264 174:511 175:308 176:1
177:4 178:760 180:754 182:399 183:251 184:207
186:957 187:799 188:906 189:1015 190:4438 192:5782
193:4796 194:3466 195:2930 196:1024 197:3 198:3551
199:3749 200:5585 201:1583 202:8274 203:8431 204:4092
205:2347 206:2533 207:2967 208:3884 209:3493 210:2629
211:1330 212:1852 213:1622 214:751 215:62 216:4824
217:1489 218:526 219:375 220:1202 221:448 222:319
223:93
End of report
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