Routing Table Report 00:00 GMT Wed 20 Apr, 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: 359344
Prefixes after maximum aggregation: 161808
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 174876
Total ASes present in the Internet Routing Table: 37346
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31283
Origin ASes announcing only one prefix: 15011
Transit ASes present in the Internet Routing Table: 5051
Transit-only ASes present in the Internet Routing Table: 115
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 28
Max AS path prepend of ASN (50912) 25
Prefixes from unregistered ASNs in the Routing Table: 2948
Unregistered ASNs in the Routing Table: 294
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 1012
Prefixes from 32-bit ASNs in the Routing Table: 2268
Special use prefixes present in the Routing Table: 79
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2415339885
Equivalent to 143 /8s, 247 /16s and 41 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 148794
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86202
Total APNIC prefixes after maximum aggregation: 28795
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 83286
Unique aggregates announced from the APNIC address blocks: 36849
APNIC Region origin ASes present in the Internet Routing Table: 4395
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1234
APNIC Region transit ASes present in the Internet Routing Table: 689
Average APNIC Region AS path length visible: 4.9
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: 610200001
Equivalent to 36 /8s, 94 /16s and 233 /24s
Percentage of available APNIC address space announced: 77.4
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: 142953
Total ARIN prefixes after maximum aggregation: 73101
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115049
Unique aggregates announced from the ARIN address blocks: 45047
ARIN Region origin ASes present in the Internet Routing Table: 14341
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5459
ARIN Region transit ASes present in the Internet Routing Table: 1458
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: 11
Number of ARIN addresses announced to Internet: 798023960
Equivalent to 47 /8s, 144 /16s and 225 /24s
Percentage of available ARIN address space announced: 63.4
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: 87219
Total RIPE prefixes after maximum aggregation: 48064
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79579
Unique aggregates announced from the RIPE address blocks: 50467
RIPE Region origin ASes present in the Internet Routing Table: 15544
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7750
RIPE Region transit ASes present in the Internet Routing Table: 2472
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 750
Number of RIPE addresses announced to Internet: 466735740
Equivalent to 27 /8s, 209 /16s and 210 /24s
Percentage of available RIPE address space announced: 75.2
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: 32535
Total LACNIC prefixes after maximum aggregation: 7442
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31644
Unique aggregates announced from the LACNIC address blocks: 16475
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 258
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: 198
Number of LACNIC addresses announced to Internet: 82659712
Equivalent to 4 /8s, 237 /16s and 73 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7849
Total AfriNIC prefixes after maximum aggregation: 1843
AfriNIC Deaggregation factor: 4.26
Prefixes being announced from the AfriNIC address blocks: 6099
Unique aggregates announced from the AfriNIC address blocks: 1885
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.71
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23356416
Equivalent to 1 /8s, 100 /16s and 100 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1866 9474 599 Korea Telecom (KIX)
17974 1815 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1500 300 80 TPG Internet Pty Ltd
4755 1442 378 164 Videsh Sanchar Nigam Ltd. Aut
24560 1138 322 203 Bharti Airtel Ltd.
9583 1055 77 496 Sify Limited
4808 1024 2100 293 CNCGROUP IP network: China169
9829 1003 868 53 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
18101 933 116 138 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 3659 3822 256 bellsouth.net, inc.
4323 2643 1106 397 Time Warner Telecom
1785 1792 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1629 308 38 AT&T Worldnet Services
20115 1585 1554 639 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1362 6946 890 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 535 912 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 1020 798 175 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 508 1997 391 TDC Tele Danmark
34984 508 106 182 Tellcom Iletisim Hizmetleri
29049 466 33 37 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 441 127 338 Akamai Technologies European
3320 418 7608 364 Deutsche Telekom AG
8402 412 320 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 1430 266 157 TVCABLE BOGOTA
8151 1361 2669 367 Uninet S.A. de C.V.
28573 1282 988 87 Types of queries are: POCs, o
6503 907 354 73 AVANTEL, S.A.
7303 904 466 137 Telecom Argentina Stet-France
14420 663 53 91 Types of queries are: POCs, o
22047 568 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
14117 492 46 43 Telefonica del Sur S.A.
27947 491 53 53 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 839 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 435 90 8 Nile Online
3741 343 1082 241 The Internet Solution
36992 296 415 13 Etisalat MISR
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 217 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 155 441 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 3659 3822 256 bellsouth.net, inc.
4323 2643 1106 397 Time Warner Telecom
23456 2268 660 1233 >>UNKNOWN<<
4766 1866 9474 599 Korea Telecom (KIX)
17974 1815 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1792 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1629 308 38 AT&T Worldnet Services
20115 1585 1554 639 Charter Communications
7545 1500 300 80 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 2643 2246 Time Warner Telecom
17974 1815 1785 PT TELEKOMUNIKASI INDONESIA
1785 1792 1664 AppliedTheory Corporation
6478 1629 1591 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1500 1420 TPG Internet Pty Ltd
4755 1442 1278 Videsh Sanchar Nigam Ltd. Aut
10620 1430 1273 TVCABLE BOGOTA
4766 1866 1267 Korea Telecom (KIX)
11492 1264 1249 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 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
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
31.12.96.0/19 29550 Blueconnex Networks Ltd
31.13.0.0/21 29550 Blueconnex Networks Ltd
31.133.80.0/20 23456 >>UNKNOWN<<
31.133.96.0/21 50440 RomEuro Consult SRL
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 /11:78 /12:220
/13:454 /14:783 /15:1406 /16:11748 /17:5991 /18:9810
/19:19701 /20:25890 /21:26009 /22:34094 /23:33135 /24:187319
/25:339 /26:339 /27:154 /28:273 /29:193 /30:658
/31:60 /32:630
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2257 3659 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1583 1629 AT&T Worldnet Services
4323 1342 2643 Time Warner Telecom
10620 1320 1430 TVCABLE BOGOTA
11492 1213 1264 Cable One
23456 1147 2268 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1792 AppliedTheory Corporation
286 880 1020 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:257 2:73 4:18 5:1 6:1 8:348
12:2014 13:1 14:439 15:15 16:3 17:8
20:9 23:5 24:1620 27:715 31:224 32:126
33:3 34:2 37:1 38:763 40:101 41:2392
42:1 44:3 46:855 47:4 49:171 50:360
52:13 55:5 56:2 57:40 58:846 59:478
60:387 61:1265 62:1021 63:1933 64:3950 65:2327
66:4375 67:1846 68:1257 69:3070 70:746 71:351
72:1941 73:3 74:2407 75:312 76:343 77:870
78:698 79:477 80:1116 81:838 82:518 83:462
84:665 85:1092 86:616 87:787 88:337 89:1637
90:181 91:3714 92:517 93:1075 94:1290 95:803
96:459 97:251 98:828 99:35 101:63 103:5
106:1 107:5 108:84 109:950 110:555 111:692
112:326 113:390 114:527 115:684 116:957 117:674
118:806 119:1143 120:292 121:676 122:1626 123:1067
124:1248 125:1266 128:265 129:167 130:171 131:566
132:113 133:20 134:220 135:49 136:214 137:142
138:302 139:116 140:486 141:174 142:401 143:394
144:485 145:53 146:442 147:215 148:591 149:234
150:169 151:187 152:307 153:179 154:3 155:394
156:193 157:327 158:132 159:382 160:319 161:243
162:277 163:164 164:486 165:368 166:511 167:426
168:724 169:164 170:779 171:76 172:1 173:1513
174:535 175:359 177:72 178:865 180:819 181:9
182:430 183:193 184:334 185:1 186:1139 187:800
188:989 189:994 190:4851 192:5823 193:4851 194:3521
195:3108 196:1239 197:16 198:3578 199:3928 200:5539
201:1511 202:8359 203:8448 204:4132 205:2335 206:2763
207:3033 208:3979 209:3528 210:2736 211:1366 212:2038
213:1763 214:740 215:67 216:4871 217:1652 218:560
219:386 220:1197 221:480 222:341 223:143
End of report
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