Routing Table Report 00:00 GMT Sat 22 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: 383717
Prefixes after maximum aggregation: 170938
Deaggregation factor: 2.24
Unique aggregates announced to Internet: 185756
Total ASes present in the Internet Routing Table: 39178
Prefixes per ASN: 9.79
Origin-only ASes present in the Internet Routing Table: 32342
Origin ASes announcing only one prefix: 15541
Transit ASes present in the Internet Routing Table: 5294
Transit-only ASes present in the Internet Routing Table: 145
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 33
Max AS path prepend of ASN (51310) 25
Prefixes from unregistered ASNs in the Routing Table: 5073
Unregistered ASNs in the Routing Table: 846
Number of 32-bit ASNs allocated by the RIRs: 1876
Number of 32-bit ASNs visible in the Routing Table: 1542
Prefixes from 32-bit ASNs in the Routing Table: 3541
Special use prefixes present in the Routing Table: 89
Prefixes being announced from unallocated address space: 89
Number of addresses announced to Internet: 2486683401
Equivalent to 148 /8s, 55 /16s and 199 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
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: 160938
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92525
Total APNIC prefixes after maximum aggregation: 29759
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 89113
Unique aggregates announced from the APNIC address blocks: 37959
APNIC Region origin ASes present in the Internet Routing Table: 4570
APNIC Prefixes per ASN: 19.50
APNIC Region origin ASes announcing only one prefix: 1275
APNIC Region transit ASes present in the Internet Routing Table: 722
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 94
Number of APNIC addresses announced to Internet: 628935680
Equivalent to 37 /8s, 124 /16s and 204 /24s
Percentage of available APNIC address space announced: 79.8
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: 148285
Total ARIN prefixes after maximum aggregation: 76543
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 119967
Unique aggregates announced from the ARIN address blocks: 48130
ARIN Region origin ASes present in the Internet Routing Table: 14760
ARIN Prefixes per ASN: 8.13
ARIN Region origin ASes announcing only one prefix: 5668
ARIN Region transit ASes present in the Internet Routing Table: 1549
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804821784
Equivalent to 47 /8s, 248 /16s and 155 /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: 94803
Total RIPE prefixes after maximum aggregation: 50830
RIPE Deaggregation factor: 1.87
Prefixes being announced from the RIPE address blocks: 86589
Unique aggregates announced from the RIPE address blocks: 54157
RIPE Region origin ASes present in the Internet Routing Table: 16073
RIPE Prefixes per ASN: 5.39
RIPE Region origin ASes announcing only one prefix: 7987
RIPE Region transit ASes present in the Internet Routing Table: 2555
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1081
Number of RIPE addresses announced to Internet: 491428036
Equivalent to 29 /8s, 74 /16s and 152 /24s
Percentage of available RIPE address space announced: 79.2
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: 35807
Total LACNIC prefixes after maximum aggregation: 7894
LACNIC Deaggregation factor: 4.54
Prefixes being announced from the LACNIC address blocks: 35147
Unique aggregates announced from the LACNIC address blocks: 18072
LACNIC Region origin ASes present in the Internet Routing Table: 1547
LACNIC Prefixes per ASN: 22.72
LACNIC Region origin ASes announcing only one prefix: 453
LACNIC Region transit ASes present in the Internet Routing Table: 275
Average LACNIC Region AS path length visible: 4.3
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 351
Number of LACNIC addresses announced to Internet: 91740936
Equivalent to 5 /8s, 119 /16s and 219 /24s
Percentage of available LACNIC address space announced: 60.8
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: 8551
Total AfriNIC prefixes after maximum aggregation: 2034
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6615
Unique aggregates announced from the AfriNIC address blocks: 1979
AfriNIC Region origin ASes present in the Internet Routing Table: 493
AfriNIC Prefixes per ASN: 13.42
AfriNIC Region origin ASes announcing only one prefix: 158
AfriNIC Region transit ASes present in the Internet Routing Table: 112
Average AfriNIC Region AS path length visible: 4.2
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: 27836672
Equivalent to 1 /8s, 168 /16s and 193 /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 1938 11103 657 Korea Telecom (KIX)
17974 1886 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1607 303 85 TPG Internet Pty Ltd
4755 1535 632 172 Videsh Sanchar Nigam Ltd. Aut
7552 1389 1064 8 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1089 80 498 Sify Limited
4808 1036 2076 303 CNCGROUP IP network: China169
24560 966 343 220 Bharti Airtel Ltd.
18101 953 166 149 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 3545 3815 221 bellsouth.net, inc.
7029 2326 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
1785 1841 680 123 AppliedTheory Corporation
4323 1626 1099 392 Time Warner Telecom
20115 1593 1546 620 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1394 251 671 Mediacom Communications Corp
7018 1324 7047 868 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
3352 2203 2317 51 Internet Access Network of TD
8402 1472 352 13 Corbina telecom
286 1101 827 211 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 583 108 179 Tellcom Iletisim Hizmetleri
20940 556 186 427 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 532 2080 408 TDC Tele Danmark
3320 503 8169 383 Deutsche Telekom AG
12479 477 593 7 Uni2 Autonomous System
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 1694 313 155 TVCABLE BOGOTA
8151 1466 2894 347 Uninet S.A. de C.V.
28573 1413 1031 77 Types of queries are: POCs, o
7303 1229 747 177 Telecom Argentina Stet-France
27947 598 72 84 Telconet S.A
6503 581 450 71 AVANTEL, S.A.
22047 580 322 17 Types of queries are: POCs, o
7738 552 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 541 233 96 COLOMBIA TELECOMUNICACIONES S
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 800 146 34 LINKdotNET AS number
8452 641 446 12 TEDATA
15475 443 74 8 Nile Online
36992 297 415 21 Etisalat MISR
3741 280 939 229 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 218 18 14 Ci Telecom Autonomous system
33776 208 13 14 Starcomms Nigeria Limited
12258 197 28 58 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 3545 3815 221 bellsouth.net, inc.
7029 2326 1042 210 Windstream Communications Inc
3352 2203 2317 51 Internet Access Network of TD
18566 2098 383 177 Covad Communications
4766 1938 11103 657 Korea Telecom (KIX)
17974 1886 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1841 680 123 AppliedTheory Corporation
10620 1694 313 155 TVCABLE BOGOTA
4323 1626 1099 392 Time Warner Telecom
7545 1607 303 85 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3352 2203 2152 Internet Access Network of TD
7029 2326 2116 Windstream Communications Inc
18566 2098 1921 Covad Communications
17974 1886 1853 PT TELEKOMUNIKASI INDONESIA
1785 1841 1718 AppliedTheory Corporation
10620 1694 1539 TVCABLE BOGOTA
7545 1607 1522 TPG Internet Pty Ltd
8402 1472 1459 Corbina telecom
7552 1389 1381 Vietel Corporation
4755 1535 1363 Videsh Sanchar Nigam Ltd. Aut
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 /15:1456 /16:12133 /17:6291 /18:10385
/19:20504 /20:28619 /21:27980 /22:37682 /23:36356 /24:199043
/25:65 /26:74 /27:103 /28:276 /29:78 /30:486
/31:53 /32:481
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2184 3545 bellsouth.net, inc.
18566 2047 2098 Covad Communications
7029 1981 2326 Windstream Communications Inc
3352 1751 2203 Internet Access Network of TD
10620 1589 1694 TVCABLE BOGOTA
8402 1449 1472 Corbina telecom
30036 1356 1394 Mediacom Communications Corp
11492 1118 1156 Cable One
1785 1057 1841 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:411 2:482 4:19 5:1 6:3 8:362
12:1959 13:1 14:542 15:11 16:3 17:7
20:9 23:59 24:1681 27:964 31:604 32:150
33:4 34:2 36:4 38:758 39:1 40:110
41:2679 42:54 44:3 46:1003 47:3 49:296
50:442 52:13 55:6 56:2 57:47 58:885
59:493 60:363 61:1183 62:1094 63:1976 64:4074
65:2312 66:4310 67:2001 68:1329 69:3301 70:938
71:379 72:1832 73:1 74:2626 75:401 76:328
77:889 78:863 79:484 80:1594 81:944 82:506
83:580 84:622 85:1119 86:412 87:897 88:424
89:1615 90:235 91:4223 92:528 93:1541 94:1310
95:1080 96:441 97:284 98:930 99:37 101:211
103:391 106:70 107:73 108:76 109:1057 110:671
111:786 112:331 113:488 114:614 115:706 116:909
117:720 118:914 119:1249 120:339 121:712 122:1570
123:1023 124:1355 125:1384 128:258 129:180 130:166
131:593 132:145 133:21 134:220 135:54 136:213
137:140 138:284 139:136 140:488 141:298 142:390
143:432 144:495 145:64 146:470 147:226 148:695
149:267 150:166 151:192 152:447 153:178 154:7
155:386 156:206 157:363 158:153 159:479 160:324
161:214 162:340 163:172 164:509 165:387 166:537
167:438 168:742 169:147 170:872 171:86 172:4
173:1721 174:689 175:437 176:273 177:337 178:1072
180:1095 181:36 182:655 183:217 184:387 185:1
186:1298 187:704 188:938 189:873 190:5103 192:5948
193:5053 194:3587 195:3130 196:1263 197:165 198:3635
199:4180 200:5521 201:1683 202:8558 203:8503 204:4295
205:2369 206:2690 207:2836 208:4041 209:3602 210:2725
211:1458 212:2126 213:1808 214:784 215:95 216:4930
217:1621 218:568 219:344 220:1245 221:514 222:346
223:272
End of report