Routing Table Report 00:00 GMT Thu 13 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: 381730
Prefixes after maximum aggregation: 170654
Deaggregation factor: 2.24
Unique aggregates announced to Internet: 185657
Total ASes present in the Internet Routing Table: 39032
Prefixes per ASN: 9.78
Origin-only ASes present in the Internet Routing Table: 32272
Origin ASes announcing only one prefix: 15479
Transit ASes present in the Internet Routing Table: 5257
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: 4877
Unregistered ASNs in the Routing Table: 794
Number of 32-bit ASNs allocated by the RIRs: 1847
Number of 32-bit ASNs visible in the Routing Table: 1503
Prefixes from 32-bit ASNs in the Routing Table: 3432
Special use prefixes present in the Routing Table: 90
Prefixes being announced from unallocated address space: 91
Number of addresses announced to Internet: 2483975698
Equivalent to 148 /8s, 14 /16s and 118 /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: 159165
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92988
Total APNIC prefixes after maximum aggregation: 29960
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 89439
Unique aggregates announced from the APNIC address blocks: 37922
APNIC Region origin ASes present in the Internet Routing Table: 4562
APNIC Prefixes per ASN: 19.61
APNIC Region origin ASes announcing only one prefix: 1262
APNIC Region transit ASes present in the Internet Routing Table: 715
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: 91
Number of APNIC addresses announced to Internet: 628555520
Equivalent to 37 /8s, 118 /16s and 255 /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: 147908
Total ARIN prefixes after maximum aggregation: 76240
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 119645
Unique aggregates announced from the ARIN address blocks: 47983
ARIN Region origin ASes present in the Internet Routing Table: 14721
ARIN Prefixes per ASN: 8.13
ARIN Region origin ASes announcing only one prefix: 5642
ARIN Region transit ASes present in the Internet Routing Table: 1545
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: 804746776
Equivalent to 47 /8s, 247 /16s and 118 /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: 92356
Total RIPE prefixes after maximum aggregation: 50739
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 84238
Unique aggregates announced from the RIPE address blocks: 54422
RIPE Region origin ASes present in the Internet Routing Table: 16030
RIPE Prefixes per ASN: 5.26
RIPE Region origin ASes announcing only one prefix: 7964
RIPE Region transit ASes present in the Internet Routing Table: 2534
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: 1056
Number of RIPE addresses announced to Internet: 491050956
Equivalent to 29 /8s, 68 /16s and 215 /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: 36487
Total LACNIC prefixes after maximum aggregation: 7897
LACNIC Deaggregation factor: 4.62
Prefixes being announced from the LACNIC address blocks: 35806
Unique aggregates announced from the LACNIC address blocks: 17992
LACNIC Region origin ASes present in the Internet Routing Table: 1541
LACNIC Prefixes per ASN: 23.24
LACNIC Region origin ASes announcing only one prefix: 457
LACNIC Region transit ASes present in the Internet Routing Table: 274
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: 340
Number of LACNIC addresses announced to Internet: 90762504
Equivalent to 5 /8s, 104 /16s and 237 /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: 8370
Total AfriNIC prefixes after maximum aggregation: 2024
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 6445
Unique aggregates announced from the AfriNIC address blocks: 1966
AfriNIC Region origin ASes present in the Internet Routing Table: 488
AfriNIC Prefixes per ASN: 13.21
AfriNIC Region origin ASes announcing only one prefix: 154
AfriNIC Region transit ASes present in the Internet Routing Table: 111
Average AfriNIC Region AS path length visible: 4.2
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: 27544320
Equivalent to 1 /8s, 164 /16s and 75 /24s
Percentage of available AfriNIC address space announced: 41.0
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 1918 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1609 303 87 TPG Internet Pty Ltd
4755 1539 635 171 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 7 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
24560 1100 342 225 Bharti Airtel Ltd.
4808 1098 2128 315 CNCGROUP IP network: China169
9583 1087 80 503 Sify Limited
18101 952 165 142 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 3550 3815 221 bellsouth.net, inc.
7029 1926 1036 236 Windstream Communications Inc
18566 1916 366 240 Covad Communications
1785 1837 680 122 AppliedTheory Corporation
4323 1628 1099 392 Time Warner Telecom
20115 1592 1541 636 Charter Communications
22773 1460 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1385 250 676 Mediacom Communications Corp
7018 1341 7050 878 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 1472 352 13 Corbina telecom
286 1074 825 200 KPNQwest Backbone AS
6830 654 1927 415 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 482 593 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 1449 2824 345 Uninet S.A. de C.V.
28573 1369 1015 68 Types of queries are: POCs, o
7303 1164 683 175 Telecom Argentina Stet-France
27925 712 98 11 Entel PCS Telecomunicaciones
14420 636 59 87 Types of queries are: POCs, o
27947 588 72 78 Telconet S.A
6503 585 450 70 AVANTEL, S.A.
22047 579 322 17 Types of queries are: POCs, o
7738 553 1050 31 Telecomunicacoes da Bahia 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 792 146 36 LINKdotNET AS number
8452 504 446 12 TEDATA
15475 444 74 8 Nile Online
36992 298 415 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 218 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 3550 3815 221 bellsouth.net, inc.
4766 1933 11071 654 Korea Telecom (KIX)
7029 1926 1036 236 Windstream Communications Inc
17974 1918 519 33 PT TELEKOMUNIKASI INDONESIA
18566 1916 366 240 Covad Communications
1785 1837 680 122 AppliedTheory Corporation
10620 1680 310 154 TVCABLE BOGOTA
4323 1628 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 1918 1885 PT TELEKOMUNIKASI INDONESIA
1785 1837 1715 AppliedTheory Corporation
7029 1926 1690 Windstream Communications Inc
18566 1916 1676 Covad Communications
10620 1680 1526 TVCABLE BOGOTA
7545 1609 1522 TPG Internet Pty Ltd
8402 1472 1459 Corbina telecom
7552 1393 1386 Vietel Corporation
4755 1539 1368 Videsh Sanchar Nigam Ltd. Aut
22773 1460 1360 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 /8:19 /9:12 /10:27 /11:81 /12:235
/13:464 /14:812 /15:1458 /16:12141 /17:6273 /18:10453
/19:20473 /20:28435 /21:27816 /22:37241 /23:35543 /24:198593
/25:67 /26:86 /27:112 /28:272 /29:106 /30:482
/31:52 /32:477
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2189 3550 bellsouth.net, inc.
18566 1872 1916 Covad Communications
7029 1600 1926 Windstream Communications Inc
10620 1575 1680 TVCABLE BOGOTA
8402 1449 1472 Corbina telecom
30036 1347 1385 Mediacom Communications Corp
11492 1115 1153 Cable One
1785 1056 1837 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
22773 948 1460 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:392 2:484 4:19 5:1 6:3 8:360
12:1954 13:1 14:540 15:11 16:3 17:7
20:9 23:57 24:1693 27:965 31:580 32:150
33:4 34:2 36:4 38:759 39:1 40:108
41:2534 42:51 44:3 46:991 47:3 49:271
50:447 52:13 55:5 56:2 57:47 58:895
59:489 60:367 61:1183 62:1100 63:1956 64:4096
65:2296 66:4057 67:1998 68:1281 69:3317 70:883
71:378 72:1888 73:1 74:2566 75:376 76:350
77:885 78:870 79:482 80:1127 81:830 82:513
83:540 84:644 85:1119 86:406 87:875 88:359
89:1614 90:268 91:4185 92:529 93:1521 94:1302
95:1045 96:440 97:281 98:922 99:37 101:212
103:358 106:70 107:64 108:58 109:1053 110:667
111:794 112:320 113:482 114:580 115:697 116:903
117:714 118:908 119:1245 120:338 121:710 122:1591
123:1027 124:1365 125:1382 128:256 129:181 130:167
131:587 132:120 133:21 134:219 135:54 136:213
137:139 138:289 139:151 140:493 141:294 142:390
143:429 144:496 145:64 146:473 147:227 148:651
149:266 150:154 151:193 152:448 153:178 154:7
155:385 156:207 157:361 158:152 159:468 160:323
161:209 162:337 163:181 164:509 165:395 166:538
167:437 168:746 169:146 170:870 171:86 172:4
173:1687 174:666 175:427 176:282 177:321 178:1056
180:1117 181:36 182:669 183:214 184:367 185:1
186:2089 187:670 188:933 189:847 190:5276 192:5960
193:5034 194:3561 195:3121 196:1243 197:185 198:3636
199:4156 200:5508 201:1656 202:8560 203:8563 204:4308
205:2393 206:2732 207:2842 208:4178 209:3578 210:2807
211:1463 212:2100 213:1776 214:789 215:89 216:4997
217:1617 218:566 219:339 220:1244 221:515 222:343
223:279
End of report