Routing Table Report 00:00 GMT Wed 05 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: 379446
Prefixes after maximum aggregation: 169894
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185412
Total ASes present in the Internet Routing Table: 38954
Prefixes per ASN: 9.74
Origin-only ASes present in the Internet Routing Table: 32252
Origin ASes announcing only one prefix: 15479
Transit ASes present in the Internet Routing Table: 5242
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 32
Max AS path prepend of ASN (51310) 23
Prefixes from unregistered ASNs in the Routing Table: 4911
Unregistered ASNs in the Routing Table: 825
Number of 32-bit ASNs allocated by the RIRs: 1811
Number of 32-bit ASNs visible in the Routing Table: 1460
Prefixes from 32-bit ASNs in the Routing Table: 3364
Special use prefixes present in the Routing Table: 82
Prefixes being announced from unallocated address space: 97
Number of addresses announced to Internet: 2482597138
Equivalent to 147 /8s, 249 /16s and 109 /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: 157923
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92240
Total APNIC prefixes after maximum aggregation: 29645
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 88820
Unique aggregates announced from the APNIC address blocks: 37912
APNIC Region origin ASes present in the Internet Routing Table: 4557
APNIC Prefixes per ASN: 19.49
APNIC Region origin ASes announcing only one prefix: 1271
APNIC Region transit ASes present in the Internet Routing Table: 719
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: 90
Number of APNIC addresses announced to Internet: 628368640
Equivalent to 37 /8s, 116 /16s and 37 /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: 147374
Total ARIN prefixes after maximum aggregation: 76103
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 119243
Unique aggregates announced from the ARIN address blocks: 47940
ARIN Region origin ASes present in the Internet Routing Table: 14717
ARIN Prefixes per ASN: 8.10
ARIN Region origin ASes announcing only one prefix: 5649
ARIN Region transit ASes present in the Internet Routing Table: 1537
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: 804625944
Equivalent to 47 /8s, 245 /16s and 158 /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: 91982
Total RIPE prefixes after maximum aggregation: 50608
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 83801
Unique aggregates announced from the RIPE address blocks: 54220
RIPE Region origin ASes present in the Internet Routing Table: 16013
RIPE Prefixes per ASN: 5.23
RIPE Region origin ASes announcing only one prefix: 7954
RIPE Region transit ASes present in the Internet Routing Table: 2524
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1034
Number of RIPE addresses announced to Internet: 490591436
Equivalent to 29 /8s, 61 /16s and 212 /24s
Percentage of available RIPE address space announced: 79.0
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: 35674
Total LACNIC prefixes after maximum aggregation: 7822
LACNIC Deaggregation factor: 4.56
Prefixes being announced from the LACNIC address blocks: 34918
Unique aggregates announced from the LACNIC address blocks: 18104
LACNIC Region origin ASes present in the Internet Routing Table: 1532
LACNIC Prefixes per ASN: 22.79
LACNIC Region origin ASes announcing only one prefix: 452
LACNIC Region transit ASes present in the Internet Routing Table: 274
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 320
Number of LACNIC addresses announced to Internet: 89997832
Equivalent to 5 /8s, 93 /16s and 66 /24s
Percentage of available LACNIC address space announced: 59.6
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: 8618
Total AfriNIC prefixes after maximum aggregation: 2017
AfriNIC Deaggregation factor: 4.27
Prefixes being announced from the AfriNIC address blocks: 6688
Unique aggregates announced from the AfriNIC address blocks: 1963
AfriNIC Region origin ASes present in the Internet Routing Table: 487
AfriNIC Prefixes per ASN: 13.73
AfriNIC Region origin ASes announcing only one prefix: 153
AfriNIC Region transit ASes present in the Internet Routing Table: 105
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: 27742976
Equivalent to 1 /8s, 167 /16s and 83 /24s
Percentage of available AfriNIC address space announced: 41.3
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
17974 1973 519 33 PT TELEKOMUNIKASI INDONESIA
4766 1934 11072 656 Korea Telecom (KIX)
7545 1604 303 86 TPG Internet Pty Ltd
4755 1537 378 173 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 7 Vietel Corporation
24560 1177 345 208 Bharti Airtel Ltd.
9829 1165 989 28 BSNL National Internet Backbo
9583 1093 80 505 Sify Limited
4808 1049 2079 297 CNCGROUP IP network: China169
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 3557 3817 226 bellsouth.net, inc.
18566 1915 366 239 Covad Communications
7029 1864 1033 207 Windstream Communications Inc
1785 1829 680 122 AppliedTheory Corporation
4323 1626 1098 391 Time Warner Telecom
20115 1591 1541 634 Charter Communications
22773 1458 2907 100 Cox Communications, Inc.
19262 1393 4728 400 Verizon Global Networks
30036 1377 249 677 Mediacom Communications Corp
7018 1340 7067 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 1298 352 13 Corbina telecom
286 1071 825 200 KPNQwest Backbone AS
34984 573 108 177 Tellcom Iletisim Hizmetleri
6830 558 1873 333 UPC Distribution Services
20940 543 185 416 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 532 2082 409 TDC Tele Danmark
3320 502 8169 384 Deutsche Telekom AG
12479 470 593 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 1681 310 155 TVCABLE BOGOTA
8151 1444 2820 339 Uninet S.A. de C.V.
28573 1358 1013 70 Types of queries are: POCs, o
7303 1159 682 172 Telecom Argentina Stet-France
14420 756 59 87 Types of queries are: POCs, o
27947 588 72 79 Telconet S.A
6503 585 450 70 AVANTEL, S.A.
22047 579 322 17 Types of queries are: POCs, o
10481 548 430 20 Prima S.A.
3816 534 232 98 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 814 146 36 LINKdotNET AS number
8452 727 445 11 TEDATA
15475 445 74 8 Nile Online
36992 298 415 19 Etisalat MISR
3741 277 938 229 The Internet Solution
15706 244 32 6 Sudatel Internet Exchange Aut
6713 242 519 14 Itissalat Al-MAGHRIB
33776 229 13 7 Starcomms Nigeria Limited
12258 199 28 59 YEBO-AS
29571 192 17 11 Ci Telecom Autonomous system
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 3557 3817 226 bellsouth.net, inc.
17974 1973 519 33 PT TELEKOMUNIKASI INDONESIA
4766 1934 11072 656 Korea Telecom (KIX)
18566 1915 366 239 Covad Communications
7029 1864 1033 207 Windstream Communications Inc
1785 1829 680 122 AppliedTheory Corporation
10620 1681 310 155 TVCABLE BOGOTA
4323 1626 1098 391 Time Warner Telecom
7545 1604 303 86 TPG Internet Pty Ltd
20115 1591 1541 634 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 1973 1940 PT TELEKOMUNIKASI INDONESIA
1785 1829 1707 AppliedTheory Corporation
18566 1915 1676 Covad Communications
7029 1864 1657 Windstream Communications Inc
10620 1681 1526 TVCABLE BOGOTA
7545 1604 1518 TPG Internet Pty Ltd
7552 1393 1386 Vietel Corporation
4755 1537 1364 Videsh Sanchar Nigam Ltd. Aut
22773 1458 1358 Cox Communications, Inc.
28573 1358 1288 Types of queries are: POCs, o
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 /14:811 /15:1457 /16:12112 /17:6246 /18:10373
/19:20382 /20:28301 /21:27675 /22:37186 /23:35455 /24:196994
/25:67 /26:86 /27:113 /28:271 /29:72 /30:480
/31:52 /32:474
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2192 3557 bellsouth.net, inc.
18566 1870 1915 Covad Communications
10620 1576 1681 TVCABLE BOGOTA
7029 1543 1864 Windstream Communications Inc
30036 1339 1377 Mediacom Communications Corp
8402 1275 1298 Corbina telecom
11492 1115 1153 Cable One
1785 1054 1829 AppliedTheory Corporation
7011 1052 1173 Citizens Utilities
22773 947 1458 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:384 2:439 4:19 5:1 6:3 8:356
12:1957 13:1 14:530 15:13 16:3 17:7
20:10 23:39 24:1693 27:963 31:574 32:150
33:4 34:2 36:4 38:755 40:108 41:2692
42:49 44:3 46:993 47:3 49:264 50:434
52:13 55:5 56:2 57:47 58:887 59:491
60:365 61:1180 62:1087 63:1958 64:4085 65:2307
66:4037 67:1986 68:1279 69:3298 70:874 71:377
72:1880 73:1 74:2522 75:368 76:349 77:885
78:860 79:487 80:1127 81:840 82:512 83:505
84:638 85:1126 86:410 87:878 88:358 89:1603
90:268 91:4168 92:530 93:1356 94:1322 95:996
96:444 97:278 98:926 99:37 101:210 103:343
106:7 107:59 108:51 109:1047 110:672 111:793
112:319 113:481 114:569 115:699 116:898 117:704
118:903 119:1212 120:336 121:700 122:1607 123:1023
124:1356 125:1378 128:246 129:180 130:167 131:578
132:112 133:21 134:215 135:54 136:214 137:139
138:288 139:136 140:476 141:292 142:391 143:421
144:491 145:64 146:473 147:226 148:691 149:264
150:156 151:193 152:446 153:178 154:6 155:387
156:207 157:361 158:151 159:466 160:324 161:206
162:337 163:179 164:511 165:396 166:537 167:434
168:745 169:148 170:864 171:85 172:1 173:1668
174:660 175:418 176:251 177:286 178:1054 180:1102
181:37 182:631 183:214 184:388 185:1 186:1508
187:672 188:933 189:872 190:5186 192:5945 193:5039
194:3557 195:3125 196:1257 197:185 198:3631 199:4141
200:5526 201:1647 202:8582 203:8497 204:4269 205:2383
206:2730 207:2835 208:4163 209:3544 210:2722 211:1466
212:2100 213:1803 214:783 215:90 216:4964 217:1618
218:564 219:339 220:1244 221:515 222:343 223:277
End of report