Routing Table Report 00:00 GMT Wed 12 Oct, 2011
NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/
Analysis Summary
----------------
BGP routing table entries examined: 380567
Prefixes after maximum aggregation: 170578
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185518
Total ASes present in the Internet Routing Table: 39010
Prefixes per ASN: 9.76
Origin-only ASes present in the Internet Routing Table: 32271
Origin ASes announcing only one prefix: 15472
Transit ASes present in the Internet Routing Table: 5243
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 4837
Unregistered ASNs in the Routing Table: 792
Number of 32-bit ASNs allocated by the RIRs: 1840
Number of 32-bit ASNs visible in the Routing Table: 1496
Prefixes from 32-bit ASNs in the Routing Table: 3404
Special use prefixes present in the Routing Table: 83
Prefixes being announced from unallocated address space: 96
Number of addresses announced to Internet: 2484141330
Equivalent to 148 /8s, 16 /16s and 253 /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: 91.5
Total number of prefixes smaller than registry allocations: 158155
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92890
Total APNIC prefixes after maximum aggregation: 29939
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 89347
Unique aggregates announced from the APNIC address blocks: 37938
APNIC Region origin ASes present in the Internet Routing Table: 4557
APNIC Prefixes per ASN: 19.61
APNIC Region origin ASes announcing only one prefix: 1259
APNIC Region transit ASes present in the Internet Routing Table: 714
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 92
Number of APNIC addresses announced to Internet: 628474368
Equivalent to 37 /8s, 117 /16s and 194 /24s
Percentage of available APNIC address space announced: 79.7
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: 147775
Total ARIN prefixes after maximum aggregation: 76242
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 119598
Unique aggregates announced from the ARIN address blocks: 47975
ARIN Region origin ASes present in the Internet Routing Table: 14731
ARIN Prefixes per ASN: 8.12
ARIN Region origin ASes announcing only one prefix: 5653
ARIN Region transit ASes present in the Internet Routing Table: 1544
Average ARIN Region AS path length visible: 3.7
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: 804729624
Equivalent to 47 /8s, 247 /16s and 51 /24s
Percentage of available ARIN address space announced: 64.0
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: 92302
Total RIPE prefixes after maximum aggregation: 50703
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 84112
Unique aggregates announced from the RIPE address blocks: 54308
RIPE Region origin ASes present in the Internet Routing Table: 16018
RIPE Prefixes per ASN: 5.25
RIPE Region origin ASes announcing only one prefix: 7954
RIPE Region transit ASes present in the Internet Routing Table: 2523
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1052
Number of RIPE addresses announced to Internet: 490939084
Equivalent to 29 /8s, 67 /16s and 34 /24s
Percentage of available RIPE address space announced: 79.1
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: 35651
Total LACNIC prefixes after maximum aggregation: 7892
LACNIC Deaggregation factor: 4.52
Prefixes being announced from the LACNIC address blocks: 34899
Unique aggregates announced from the LACNIC address blocks: 17994
LACNIC Region origin ASes present in the Internet Routing Table: 1532
LACNIC Prefixes per ASN: 22.78
LACNIC Region origin ASes announcing only one prefix: 452
LACNIC Region transit ASes present in the Internet Routing Table: 273
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 336
Number of LACNIC addresses announced to Internet: 90706184
Equivalent to 5 /8s, 104 /16s and 17 /24s
Percentage of available LACNIC address space announced: 60.1
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: 8353
Total AfriNIC prefixes after maximum aggregation: 2020
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 6437
Unique aggregates announced from the AfriNIC address blocks: 1976
AfriNIC Region origin ASes present in the Internet Routing Table: 489
AfriNIC Prefixes per ASN: 13.16
AfriNIC Region origin ASes announcing only one prefix: 154
AfriNIC Region transit ASes present in the Internet Routing Table: 110
Average AfriNIC Region AS path length visible: 4.1
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: 27819520
Equivalent to 1 /8s, 168 /16s and 126 /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 1933 11071 654 Korea Telecom (KIX)
17974 1831 512 38 PT TELEKOMUNIKASI INDONESIA
7545 1609 303 87 TPG Internet Pty Ltd
4755 1540 635 172 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 7 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
24560 1137 341 231 Bharti Airtel Ltd.
4808 1097 2124 313 CNCGROUP IP network: China169
9583 1087 80 503 Sify Limited
18101 952 165 143 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3552 3815 221 bellsouth.net, inc.
7029 1938 1036 236 Windstream Communications Inc
18566 1916 366 240 Covad Communications
1785 1837 680 122 AppliedTheory Corporation
4323 1627 1099 392 Time Warner Telecom
20115 1592 1541 636 Charter Communications
22773 1461 2907 100 Cox Communications, Inc.
19262 1394 4728 400 Verizon Global Networks
30036 1385 250 676 Mediacom Communications Corp
7018 1337 7066 874 AT&T WorldNet Services
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8402 1458 352 13 Corbina telecom
286 1073 825 199 KPNQwest Backbone AS
6830 636 1890 410 UPC Distribution Services
34984 580 108 180 Tellcom Iletisim Hizmetleri
20940 555 188 426 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 533 2082 409 TDC Tele Danmark
3320 503 8169 385 Deutsche Telekom AG
12479 480 593 7 Uni2 Autonomous System
8866 459 133 26 Bulgarian Telecommunication C
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1680 310 154 TVCABLE BOGOTA
8151 1452 2824 343 Uninet S.A. de C.V.
28573 1370 1015 68 Types of queries are: POCs, o
7303 1164 683 175 Telecom Argentina Stet-France
14420 636 59 87 Types of queries are: POCs, o
27947 588 72 78 Telconet S.A
6503 586 450 71 AVANTEL, S.A.
22047 579 322 17 Types of queries are: POCs, o
7738 553 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 785 146 36 LINKdotNET AS number
8452 499 446 12 TEDATA
15475 444 74 8 Nile Online
36992 297 415 19 Etisalat MISR
3741 278 938 230 The Internet Solution
15706 244 32 6 Sudatel Internet Exchange Aut
6713 242 519 14 Itissalat Al-MAGHRIB
29571 219 18 14 Ci Telecom Autonomous system
33776 207 13 14 Starcomms Nigeria Limited
12258 199 28 59 YEBO-AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3552 3815 221 bellsouth.net, inc.
7029 1938 1036 236 Windstream Communications Inc
4766 1933 11071 654 Korea Telecom (KIX)
18566 1916 366 240 Covad Communications
1785 1837 680 122 AppliedTheory Corporation
17974 1831 512 38 PT TELEKOMUNIKASI INDONESIA
10620 1680 310 154 TVCABLE BOGOTA
4323 1627 1099 392 Time Warner Telecom
7545 1609 303 87 TPG Internet Pty Ltd
20115 1592 1541 636 Charter Communications
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1831 1793 PT TELEKOMUNIKASI INDONESIA
1785 1837 1715 AppliedTheory Corporation
7029 1938 1702 Windstream Communications Inc
18566 1916 1676 Covad Communications
10620 1680 1526 TVCABLE BOGOTA
7545 1609 1522 TPG Internet Pty Ltd
8402 1458 1445 Corbina telecom
7552 1393 1386 Vietel Corporation
4755 1540 1368 Videsh Sanchar Nigam Ltd. Aut
22773 1461 1361 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/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 7018 AT&T WorldNet Servic
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 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/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 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/rviews/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 /11:81 /12:235
/13:464 /14:813 /15:1458 /16:12143 /17:6272 /18:10451
/19:20482 /20:28385 /21:27779 /22:37213 /23:35537 /24:197530
/25:67 /26:86 /27:113 /28:283 /29:106 /30:481
/31:52 /32:477
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2190 3552 bellsouth.net, inc.
18566 1872 1916 Covad Communications
7029 1611 1938 Windstream Communications Inc
10620 1575 1680 TVCABLE BOGOTA
8402 1435 1458 Corbina telecom
30036 1347 1385 Mediacom Communications Corp
11492 1115 1153 Cable One
1785 1056 1837 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
22773 949 1461 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:391 2:483 4:19 5:1 6:3 8:359
12:1955 13:1 14:540 15:11 16:3 17:7
20:9 23:56 24:1695 27:965 31:581 32:150
33:4 34:2 36:4 38:759 39:1 40:108
41:2529 42:51 44:3 46:989 47:3 49:267
50:445 52:13 55:5 56:2 57:47 58:890
59:489 60:367 61:1123 62:1121 63:1958 64:4099
65:2300 66:4055 67:2000 68:1281 69:3315 70:883
71:378 72:1885 73:1 74:2566 75:376 76:349
77:884 78:867 79:483 80:1128 81:828 82:514
83:540 84:643 85:1119 86:410 87:875 88:359
89:1612 90:268 91:4174 92:527 93:1390 94:1300
95:1042 96:440 97:280 98:922 99:36 101:212
103:352 106:70 107:61 108:58 109:1051 110:670
111:795 112:319 113:482 114:579 115:697 116:908
117:713 118:896 119:1248 120:338 121:710 122:1603
123:1027 124:1366 125:1385 128:248 129:178 130:167
131:587 132:121 133:21 134:216 135:54 136:213
137:139 138:288 139:155 140:494 141:294 142:390
143:429 144:495 145:64 146:473 147:227 148:690
149:266 150:154 151:193 152:448 153:178 154:7
155:386 156:207 157:361 158:151 159:467 160:324
161:208 162:340 163:181 164:507 165:395 166:539
167:437 168:745 169:146 170:871 171:86 172:4
173:1688 174:666 175:427 176:278 177:312 178:1055
180:1113 181:36 182:669 183:206 184:367 185:1
186:1416 187:640 188:933 189:846 190:5117 192:5957
193:5030 194:3557 195:3116 196:1235 197:184 198:3636
199:4150 200:5531 201:1657 202:8566 203:8551 204:4308
205:2393 206:2733 207:2841 208:4179 209:3570 210:2801
211:1464 212:2126 213:1774 214:793 215:91 216:4993
217:1617 218:564 219:339 220:1244 221:515 222:343
223:280
End of report