Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Nov 25 19:19:07 UTC 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 at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Routing Table Report 04:00 +10GMT Sat 26 Nov, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 383171
Prefixes after maximum aggregation: 167108
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 188188
Total ASes present in the Internet Routing Table: 39373
Prefixes per ASN: 9.73
Origin-only ASes present in the Internet Routing Table: 32422
Origin ASes announcing only one prefix: 15459
Transit ASes present in the Internet Routing Table: 5298
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 1776
Unregistered ASNs in the Routing Table: 904
Number of 32-bit ASNs allocated by the RIRs: 1995
Number of 32-bit ASNs visible in the Routing Table: 1653
Prefixes from 32-bit ASNs in the Routing Table: 3905
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 85
Number of addresses announced to Internet: 2493814272
Equivalent to 148 /8s, 164 /16s and 150 /24s
Percentage of available address space announced: 67.3
Percentage of allocated address space announced: 67.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.6
Total number of prefixes smaller than registry allocations: 161781
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 95482
Total APNIC prefixes after maximum aggregation: 31239
APNIC Deaggregation factor: 3.06
Prefixes being announced from the APNIC address blocks: 91934
Unique aggregates announced from the APNIC address blocks: 38658
APNIC Region origin ASes present in the Internet Routing Table: 4601
APNIC Prefixes per ASN: 19.98
APNIC Region origin ASes announcing only one prefix: 1253
APNIC Region transit ASes present in the Internet Routing Table: 713
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: 109
Number of APNIC addresses announced to Internet: 630811232
Equivalent to 37 /8s, 153 /16s and 106 /24s
Percentage of available APNIC address space announced: 80.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 145956
Total ARIN prefixes after maximum aggregation: 74537
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 118222
Unique aggregates announced from the ARIN address blocks: 48634
ARIN Region origin ASes present in the Internet Routing Table: 14758
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5635
ARIN Region transit ASes present in the Internet Routing Table: 1565
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 803548096
Equivalent to 47 /8s, 229 /16s and 43 /24s
Percentage of available ARIN address space announced: 63.9
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: 92793
Total RIPE prefixes after maximum aggregation: 51275
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 84982
Unique aggregates announced from the RIPE address blocks: 54491
RIPE Region origin ASes present in the Internet Routing Table: 16128
RIPE Prefixes per ASN: 5.27
RIPE Region origin ASes announcing only one prefix: 7973
RIPE Region transit ASes present in the Internet Routing Table: 2549
Average RIPE Region AS path length visible: 4.8
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1151
Number of RIPE addresses announced to Internet: 492677440
Equivalent to 29 /8s, 93 /16s and 169 /24s
Percentage of available RIPE address space announced: 79.4
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: 36535
Total LACNIC prefixes after maximum aggregation: 7956
LACNIC Deaggregation factor: 4.59
Prefixes being announced from the LACNIC address blocks: 35946
Unique aggregates announced from the LACNIC address blocks: 18739
LACNIC Region origin ASes present in the Internet Routing Table: 1554
LACNIC Prefixes per ASN: 23.13
LACNIC Region origin ASes announcing only one prefix: 442
LACNIC Region transit ASes present in the Internet Routing Table: 285
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 377
Number of LACNIC addresses announced to Internet: 93623936
Equivalent to 5 /8s, 148 /16s and 150 /24s
Percentage of available LACNIC address space announced: 62.0
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: 8328
Total AfriNIC prefixes after maximum aggregation: 2027
AfriNIC Deaggregation factor: 4.11
Prefixes being announced from the AfriNIC address blocks: 6387
Unique aggregates announced from the AfriNIC address blocks: 2014
AfriNIC Region origin ASes present in the Internet Routing Table: 499
AfriNIC Prefixes per ASN: 12.80
AfriNIC Region origin ASes announcing only one prefix: 156
AfriNIC Region transit ASes present in the Internet Routing Table: 107
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27874816
Equivalent to 1 /8s, 169 /16s and 86 /24s
Percentage of available AfriNIC address space announced: 41.5
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 2516 11105 973 Korea Telecom (KIX)
17974 1636 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1626 303 86 TPG Internet Pty Ltd
4755 1513 376 168 TATA Communications formerly
7552 1384 1064 7 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1095 80 494 Sify Limited
4808 1081 2072 311 CNCGROUP IP network: China169
24560 966 343 218 Bharti Airtel Ltd., Telemedia
18101 953 119 149 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 3479 3814 217 bellsouth.net, inc.
7029 2909 1016 199 Windstream Communications Inc
18566 2093 383 177 Covad Communications
1785 1849 680 121 PaeTec Communications, Inc.
4323 1613 1078 389 Time Warner Telecom
20115 1600 1546 624 Charter Communications
22773 1502 2909 104 Cox Communications, Inc.
30036 1440 258 676 Mediacom Communications Corp
19262 1387 4683 401 Verizon Global Networks
7018 1314 7030 860 AT&T WorldNet Services
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
8402 1587 480 15 Corbina telecom
6830 651 1927 412 UPC Distribution Services
34984 612 114 193 BILISIM TELEKOM
20940 557 186 439 Akamai Technologies European
3320 512 8168 389 Deutsche Telekom AG
12479 498 603 18 Uni2 Autonomous System
3292 478 2106 406 TDC Tele Danmark
8866 463 133 26 Bulgarian Telecommunication C
8551 416 366 45 Bezeq International
31148 412 22 116 FreeNet ISP
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 1700 315 179 TVCABLE BOGOTA
28573 1515 1045 71 NET Servicos de Comunicao S.A
8151 1448 2973 342 UniNet S.A. de C.V.
7303 1238 751 173 Telecom Argentina Stet-France
27947 609 72 86 Telconet S.A
22047 581 322 17 VTR PUNTO NET S.A.
6503 553 434 68 AVANTEL, S.A.
7738 553 1050 31 Telecomunicacoes da Bahia S.A
3816 545 236 87 Empresa Nacional de Telecomun
11172 528 85 95 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 897 446 12 TEDATA
24863 781 146 36 LINKdotNET AS number
3741 281 939 230 The Internet Solution
15706 242 32 6 Sudatel Internet Exchange Aut
33776 240 13 8 Starcomms Nigeria Limited
6713 235 519 14 Itissalat Al-MAGHRIB
29571 218 17 13 Ci Telecom Autonomous system
12258 196 28 57 Vodacom Internet Company
24835 192 80 8 RAYA Telecom - Egypt
16637 157 664 83 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 3479 3814 217 bellsouth.net, inc.
7029 2909 1016 199 Windstream Communications Inc
4766 2516 11105 973 Korea Telecom (KIX)
18566 2093 383 177 Covad Communications
1785 1849 680 121 PaeTec Communications, Inc.
10620 1700 315 179 TVCABLE BOGOTA
17974 1636 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1626 303 86 TPG Internet Pty Ltd
4323 1613 1078 389 Time Warner Telecom
20115 1600 1546 624 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
7029 2909 2710 Windstream Communications Inc
18566 2093 1916 Covad Communications
1785 1849 1728 PaeTec Communications, Inc.
17974 1636 1600 PT TELEKOMUNIKASI INDONESIA
8402 1587 1572 Corbina telecom
4766 2516 1543 Korea Telecom (KIX)
7545 1626 1540 TPG Internet Pty Ltd
10620 1700 1521 TVCABLE BOGOTA
28573 1515 1444 NET Servicos de Comunicao S.A
22773 1502 1398 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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
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 37345 MEDALLION Communications
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 /8:19 /9:12 /10:27 /11:81 /12:236
/13:465 /14:809 /15:1434 /16:12028 /17:6089 /18:10141
/19:20013 /20:27720 /21:27902 /22:38036 /23:35600 /24:199083
/25:1163 /26:1365 /27:775 /28:165 /29:3 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2538 2909 Windstream Communications Inc
6389 2123 3479 bellsouth.net, inc.
18566 2042 2093 Covad Communications
10620 1595 1700 TVCABLE BOGOTA
8402 1562 1587 Corbina telecom
30036 1400 1440 Mediacom Communications Corp
11492 1118 1155 Cable One
1785 1058 1849 PaeTec Communications, Inc.
7011 1050 1167 Citizens Utilities
22773 962 1502 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:421 2:487 4:15 5:1 6:3 8:358
12:1952 13:1 14:555 15:11 16:3 17:7
20:9 23:68 24:1694 27:1036 31:684 32:66
33:2 34:2 36:4 38:767 39:1 40:109
41:2868 42:64 43:1 44:3 46:1098 47:3
49:296 50:450 52:13 55:6 56:2 57:49
58:928 59:486 60:360 61:1167 62:916 63:1966
64:4080 65:2309 66:4345 67:2011 68:1172 69:3148
70:904 71:359 72:1814 74:2650 75:430 76:320
77:897 78:891 79:461 80:1145 81:839 82:523
83:520 84:471 85:1149 86:401 87:908 88:353
89:1596 90:246 91:4287 92:537 93:1438 94:1322
95:1126 96:396 97:285 98:771 99:37 101:247
103:513 106:7 107:97 108:86 109:1201 110:679
111:812 112:363 113:503 114:630 115:714 116:907
117:722 118:876 119:1289 120:353 121:669 122:1562
123:1027 124:1357 125:1354 128:269 129:184 130:174
131:633 132:155 133:21 134:224 135:54 136:212
137:145 138:285 139:122 140:494 141:250 142:379
143:400 144:498 145:66 146:476 147:220 148:641
149:275 150:163 151:191 152:449 153:172 154:7
155:379 156:208 157:360 158:156 159:488 160:333
161:215 162:365 163:175 164:518 165:381 166:540
167:448 168:828 169:145 170:826 171:87 172:4
173:1752 174:581 175:435 176:332 177:403 178:1127
180:1174 181:39 182:664 183:247 184:394 185:1
186:1464 187:783 188:994 189:1160 190:5222 192:5933
193:5057 194:3540 195:3112 196:1277 197:170 198:3614
199:4227 200:5527 201:1701 202:8557 203:8523 204:4308
205:2410 206:2655 207:2837 208:4024 209:3583 210:2741
211:1471 212:2012 213:1803 214:784 215:91 216:4921
217:1478 218:575 219:341 220:1253 221:523 222:327
223:280
End of report
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