Routing Table Report 00:00 GMT Wed 11 May, 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: 361504
Prefixes after maximum aggregation: 162751
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175805
Total ASes present in the Internet Routing Table: 37537
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31521
Origin ASes announcing only one prefix: 15061
Transit ASes present in the Internet Routing Table: 4950
Transit-only ASes present in the Internet Routing Table: 120
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3127
Unregistered ASNs in the Routing Table: 331
Number of 32-bit ASNs allocated by the RIRs: 1337
Number of 32-bit ASNs visible in the Routing Table: 1066
Prefixes from 32-bit ASNs in the Routing Table: 2409
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 154
Number of addresses announced to Internet: 2425449963
Equivalent to 144 /8s, 145 /16s and 109 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 149883
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87348
Total APNIC prefixes after maximum aggregation: 28867
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 83788
Unique aggregates announced from the APNIC address blocks: 36654
APNIC Region origin ASes present in the Internet Routing Table: 4426
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1246
APNIC Region transit ASes present in the Internet Routing Table: 686
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 613650113
Equivalent to 36 /8s, 147 /16s and 142 /24s
Percentage of available APNIC address space announced: 77.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
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: 143560
Total ARIN prefixes after maximum aggregation: 73380
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115513
Unique aggregates announced from the ARIN address blocks: 45320
ARIN Region origin ASes present in the Internet Routing Table: 14381
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5492
ARIN Region transit ASes present in the Internet Routing Table: 1446
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: 800142616
Equivalent to 47 /8s, 177 /16s and 53 /24s
Percentage of available ARIN address space announced: 63.6
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: 87315
Total RIPE prefixes after maximum aggregation: 48409
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 79991
Unique aggregates announced from the RIPE address blocks: 51008
RIPE Region origin ASes present in the Internet Routing Table: 15595
RIPE Prefixes per ASN: 5.13
RIPE Region origin ASes announcing only one prefix: 7753
RIPE Region transit ASes present in the Internet Routing Table: 2398
Average RIPE Region AS path length visible: 3.8
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 793
Number of RIPE addresses announced to Internet: 468939884
Equivalent to 27 /8s, 243 /16s and 116 /24s
Percentage of available RIPE address space announced: 75.5
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: 32800
Total LACNIC prefixes after maximum aggregation: 7523
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31839
Unique aggregates announced from the LACNIC address blocks: 16670
LACNIC Region origin ASes present in the Internet Routing Table: 1451
LACNIC Prefixes per ASN: 21.94
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 267
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 208
Number of LACNIC addresses announced to Internet: 83321356
Equivalent to 4 /8s, 247 /16s and 98 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7776
Total AfriNIC prefixes after maximum aggregation: 1863
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6127
Unique aggregates announced from the AfriNIC address blocks: 1898
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.74
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23080448
Equivalent to 1 /8s, 96 /16s and 46 /24s
Percentage of available AfriNIC address space announced: 34.4
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 1891 9501 613 Korea Telecom (KIX)
17974 1817 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1546 301 86 TPG Internet Pty Ltd
4755 1459 378 165 Videsh Sanchar Nigam Ltd. Aut
24560 1152 336 184 Bharti Airtel Ltd.
7552 1103 1064 7 Vietel Corporation
9583 1081 81 512 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
17488 953 165 100 Hathway IP Over Cable Interne
18101 933 116 139 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 3647 3822 256 bellsouth.net, inc.
4323 2563 1104 400 Time Warner Telecom
1785 1785 681 128 AppliedTheory Corporation
18566 1784 354 220 Covad Communications
6478 1668 313 51 AT&T Worldnet Services
20115 1581 1542 635 Charter Communications
19262 1496 4933 298 Verizon Global Networks
7018 1360 6943 888 AT&T WorldNet Services
22773 1330 2897 87 Cox Communications, Inc.
11492 1279 240 15 Cable One
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
286 1028 798 176 KPNQwest Backbone AS
9116 540 326 30 Goldenlines main autonomous s
6830 520 1780 321 UPC Distribution Services
3292 517 1998 392 TDC Tele Danmark
34984 510 106 182 Tellcom Iletisim Hizmetleri
20940 451 132 345 Akamai Technologies European
8866 443 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
8402 424 320 32 Corbina telecom
3320 422 7609 367 Deutsche Telekom AG
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 1467 270 155 TVCABLE BOGOTA
8151 1370 2681 361 Uninet S.A. de C.V.
28573 1308 990 86 Types of queries are: POCs, o
7303 929 470 150 Telecom Argentina Stet-France
6503 736 354 74 AVANTEL, S.A.
14420 665 53 91 Types of queries are: POCs, o
22047 554 310 15 Types of queries are: POCs, o
3816 520 226 98 COLOMBIA TELECOMUNICACIONES S
11172 495 100 83 Alestra
27947 495 53 46 Telconet 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
8452 898 445 11 TEDATA
24863 783 147 38 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
24835 207 78 10 RAYA Telecom - Egypt
33776 196 12 12 Starcomms Nigeria Limited
29571 161 17 11 Ci Telecom Autonomous system
16637 152 441 86 Johnnic e-Ventures
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 3647 3822 256 bellsouth.net, inc.
4323 2563 1104 400 Time Warner Telecom
23456 2409 678 1307 >>UNKNOWN<<
4766 1891 9501 613 Korea Telecom (KIX)
17974 1817 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1785 681 128 AppliedTheory Corporation
18566 1784 354 220 Covad Communications
6478 1668 313 51 AT&T Worldnet Services
20115 1581 1542 635 Charter Communications
7545 1546 301 86 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
4323 2563 2163 Time Warner Telecom
17974 1817 1787 PT TELEKOMUNIKASI INDONESIA
1785 1785 1657 AppliedTheory Corporation
6478 1668 1617 AT&T Worldnet Services
18566 1784 1564 Covad Communications
7545 1546 1460 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1459 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1891 1278 Korea Telecom (KIX)
11492 1279 1264 Cable One
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
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
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
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
31.130.240.0/21 51333 Skynet Trading SRL
31.211.184.0/21 174 Cogent Communications
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
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 /8:21 /9:12 /10:28 /11:79 /12:223
/13:458 /14:798 /15:1426 /16:11865 /17:6016 /18:9995
/19:19836 /20:26247 /21:26226 /22:34463 /23:33338 /24:187835
/25:375 /26:346 /27:167 /28:281 /29:177 /30:610
/31:65 /32:617
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2247 3647 bellsouth.net, inc.
18566 1746 1784 Covad Communications
6478 1622 1668 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
4323 1271 2563 Time Warner Telecom
11492 1225 1279 Cable One
23456 1187 2409 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1053 1785 AppliedTheory Corporation
286 888 1028 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:266 2:65 4:18 5:1 6:3 8:354
12:1991 13:1 14:453 15:15 16:3 17:8
20:10 23:6 24:1651 27:738 31:307 32:126
33:3 34:2 37:1 38:766 40:101 41:2465
42:5 44:3 46:902 47:4 49:172 50:394
52:13 55:5 56:2 57:40 58:846 59:485
60:388 61:1254 62:1000 63:1938 64:3955 65:2300
66:4334 67:1901 68:1271 69:3081 70:742 71:354
72:1917 73:3 74:2399 75:322 76:348 77:908
78:692 79:479 80:1106 81:818 82:505 83:461
84:644 85:1088 86:610 87:774 88:329 89:1632
90:195 91:3723 92:511 93:1077 94:1277 95:803
96:483 97:255 98:848 99:35 101:70 103:12
106:1 107:6 108:85 109:946 110:586 111:710
112:318 113:400 114:530 115:661 116:958 117:683
118:817 119:1139 120:305 121:676 122:1620 123:1076
124:1255 125:1224 128:260 129:167 130:165 131:569
132:108 133:19 134:219 135:49 136:214 137:142
138:303 139:125 140:484 141:239 142:403 143:400
144:487 145:53 146:441 147:219 148:594 149:243
150:171 151:187 152:312 153:179 154:16 155:395
156:194 157:354 158:131 159:386 160:316 161:206
162:279 163:158 164:499 165:369 166:513 167:424
168:725 169:154 170:792 171:76 172:1 173:1566
174:555 175:371 177:112 178:899 180:827 181:20
182:440 183:208 184:343 185:1 186:1154 187:771
188:844 189:904 190:4827 192:5827 193:4871 194:3530
195:3117 196:1199 197:16 198:3606 199:3906 200:5538
201:1510 202:8363 203:8465 204:4154 205:2324 206:2770
207:3050 208:3984 209:3512 210:2735 211:1409 212:2023
213:1775 214:734 215:69 216:4911 217:1671 218:570
219:371 220:1207 221:485 222:342 223:146
End of report
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