Routing Table Report 00:00 GMT Sat 07 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: 361353
Prefixes after maximum aggregation: 162580
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176085
Total ASes present in the Internet Routing Table: 37518
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31401
Origin ASes announcing only one prefix: 15061
Transit ASes present in the Internet Routing Table: 5060
Transit-only ASes present in the Internet Routing Table: 126
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3137
Unregistered ASNs in the Routing Table: 329
Number of 32-bit ASNs allocated by the RIRs: 1333
Number of 32-bit ASNs visible in the Routing Table: 1057
Prefixes from 32-bit ASNs in the Routing Table: 2411
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 151
Number of addresses announced to Internet: 2423728587
Equivalent to 144 /8s, 119 /16s and 41 /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: 149812
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87364
Total APNIC prefixes after maximum aggregation: 28829
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 83863
Unique aggregates announced from the APNIC address blocks: 36918
APNIC Region origin ASes present in the Internet Routing Table: 4418
APNIC Prefixes per ASN: 18.98
APNIC Region origin ASes announcing only one prefix: 1242
APNIC Region transit ASes present in the Internet Routing Table: 691
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 612941761
Equivalent to 36 /8s, 136 /16s and 191 /24s
Percentage of available APNIC address space announced: 77.7
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: 143269
Total ARIN prefixes after maximum aggregation: 73308
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115306
Unique aggregates announced from the ARIN address blocks: 45270
ARIN Region origin ASes present in the Internet Routing Table: 14375
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5488
ARIN Region transit ASes present in the Internet Routing Table: 1468
Average ARIN Region AS path length visible: 4.1
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: 800066584
Equivalent to 47 /8s, 176 /16s and 12 /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: 87340
Total RIPE prefixes after maximum aggregation: 48367
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80000
Unique aggregates announced from the RIPE address blocks: 51080
RIPE Region origin ASes present in the Internet Routing Table: 15598
RIPE Prefixes per ASN: 5.13
RIPE Region origin ASes announcing only one prefix: 7764
RIPE Region transit ASes present in the Internet Routing Table: 2471
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 783
Number of RIPE addresses announced to Internet: 468534860
Equivalent to 27 /8s, 237 /16s and 70 /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: 32845
Total LACNIC prefixes after maximum aggregation: 7524
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31897
Unique aggregates announced from the LACNIC address blocks: 16649
LACNIC Region origin ASes present in the Internet Routing Table: 1446
LACNIC Prefixes per ASN: 22.06
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 264
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 209
Number of LACNIC addresses announced to Internet: 83109644
Equivalent to 4 /8s, 244 /16s and 39 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7818
Total AfriNIC prefixes after maximum aggregation: 1866
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6161
Unique aggregates announced from the AfriNIC address blocks: 1919
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 98
Average AfriNIC Region AS path length visible: 4.5
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: 23038976
Equivalent to 1 /8s, 95 /16s and 140 /24s
Percentage of available AfriNIC address space announced: 34.3
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
4766 1890 9485 612 Korea Telecom (KIX)
17974 1812 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1566 301 87 TPG Internet Pty Ltd
4755 1458 374 164 Videsh Sanchar Nigam Ltd. Aut
7552 1204 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd.
9583 1057 77 492 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
17488 953 164 100 Hathway IP Over Cable Interne
4808 940 2011 280 CNCGROUP IP network: China169
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 3646 3822 256 bellsouth.net, inc.
4323 2577 1104 399 Time Warner Telecom
1785 1786 681 128 AppliedTheory Corporation
18566 1782 354 219 Covad Communications
6478 1667 313 52 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
19262 1498 4949 300 Verizon Global Networks
7018 1361 6927 889 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
2386 1265 535 908 AT&T Data Communications Serv
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 519 1780 320 UPC Distribution Services
3292 516 1997 391 TDC Tele Danmark
34984 508 106 184 Tellcom Iletisim Hizmetleri
20940 451 132 345 Akamai Technologies European
8866 445 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
3320 421 7609 366 Deutsche Telekom AG
8402 419 320 32 Corbina telecom
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 1458 270 155 TVCABLE BOGOTA
8151 1370 2681 362 Uninet S.A. de C.V.
28573 1298 990 89 Types of queries are: POCs, o
7303 929 470 150 Telecom Argentina Stet-France
6503 803 354 74 AVANTEL, S.A.
14420 665 53 91 Types of queries are: POCs, o
22047 557 310 15 Types of queries are: POCs, o
3816 519 226 98 COLOMBIA TELECOMUNICACIONES S
11172 497 100 85 Alestra
14117 492 47 44 Telefonica del Sur 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 882 445 11 TEDATA
24863 783 147 38 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 286 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 213 12 11 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 151 441 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 3646 3822 256 bellsouth.net, inc.
4323 2577 1104 399 Time Warner Telecom
23456 2411 670 1296 >>UNKNOWN<<
4766 1890 9485 612 Korea Telecom (KIX)
17974 1812 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 128 AppliedTheory Corporation
18566 1782 354 219 Covad Communications
6478 1667 313 52 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
7545 1566 301 87 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 2577 2178 Time Warner Telecom
17974 1812 1782 PT TELEKOMUNIKASI INDONESIA
1785 1786 1658 AppliedTheory Corporation
6478 1667 1615 AT&T Worldnet Services
18566 1782 1563 Covad Communications
7545 1566 1479 TPG Internet Pty Ltd
10620 1458 1303 TVCABLE BOGOTA
4755 1458 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1890 1278 Korea Telecom (KIX)
11492 1262 1247 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 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
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
31.210.248.0/21 35706 Net at Once
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /10:28 /11:79 /12:223
/13:458 /14:797 /15:1423 /16:11837 /17:6010 /18:9996
/19:19785 /20:26302 /21:26164 /22:34396 /23:33326 /24:187740
/25:375 /26:346 /27:168 /28:282 /29:183 /30:714
/31:65 /32:624
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 bellsouth.net, inc.
18566 1744 1782 Covad Communications
6478 1621 1667 AT&T Worldnet Services
10620 1348 1458 TVCABLE BOGOTA
4323 1285 2577 Time Warner Telecom
11492 1211 1262 Cable One
23456 1193 2411 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1054 1786 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)
----------------------------------------------
1:265 2:72 4:18 5:1 6:3 8:354
12:1993 13:1 14:451 15:15 16:3 17:8
20:10 23:6 24:1640 27:738 31:304 32:129
33:3 34:2 37:1 38:765 40:101 41:2499
42:4 44:3 46:910 47:4 49:172 50:388
52:13 55:4 56:2 57:40 58:845 59:484
60:387 61:1257 62:1011 63:1937 64:3951 65:2311
66:4342 67:1898 68:1256 69:3075 70:744 71:351
72:1917 73:3 74:2396 75:313 76:346 77:877
78:696 79:474 80:1091 81:819 82:510 83:457
84:651 85:1090 86:611 87:774 88:331 89:1630
90:192 91:3719 92:512 93:1076 94:1297 95:812
96:482 97:255 98:830 99:35 101:69 103:9
107:6 108:85 109:954 110:583 111:709 112:318
113:400 114:538 115:659 116:964 117:678 118:818
119:1137 120:304 121:675 122:1619 123:1080 124:1255
125:1221 128:260 129:166 130:165 131:562 132:109
133:19 134:218 135:49 136:214 137:143 138:303
139:117 140:484 141:240 142:403 143:399 144:485
145:50 146:437 147:217 148:595 149:243 150:171
151:187 152:312 153:179 154:3 155:396 156:190
157:353 158:130 159:384 160:315 161:205 162:278
163:164 164:495 165:367 166:513 167:425 168:718
169:154 170:786 171:77 172:1 173:1556 174:550
175:373 177:119 178:865 180:816 181:19 182:439
183:208 184:341 185:1 186:1146 187:800 188:852
189:940 190:4855 192:5829 193:4853 194:3529 195:3102
196:1210 197:16 198:3598 199:3927 200:5529 201:1516
202:8369 203:8468 204:4141 205:2331 206:2769 207:3043
208:3973 209:3495 210:2729 211:1408 212:2030 213:1769
214:736 215:64 216:4910 217:1664 218:570 219:372
220:1207 221:486 222:342 223:146
End of report
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