Routing Table Report 00:00 GMT Thu 21 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: 359383
Prefixes after maximum aggregation: 161878
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 174168
Total ASes present in the Internet Routing Table: 37375
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31341
Origin ASes announcing only one prefix: 15017
Transit ASes present in the Internet Routing Table: 5016
Transit-only ASes present in the Internet Routing Table: 126
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2957
Unregistered ASNs in the Routing Table: 291
Number of 32-bit ASNs allocated by the RIRs: 1308
Number of 32-bit ASNs visible in the Routing Table: 1018
Prefixes from 32-bit ASNs in the Routing Table: 2289
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 159
Number of addresses announced to Internet: 2418219385
Equivalent to 144 /8s, 35 /16s and 25 /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: 148834
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86182
Total APNIC prefixes after maximum aggregation: 28785
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 83287
Unique aggregates announced from the APNIC address blocks: 36133
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: 1230
APNIC Region transit ASes present in the Internet Routing Table: 692
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 612556993
Equivalent to 36 /8s, 130 /16s and 224 /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: 142942
Total ARIN prefixes after maximum aggregation: 73110
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115009
Unique aggregates announced from the ARIN address blocks: 45055
ARIN Region origin ASes present in the Internet Routing Table: 14347
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5464
ARIN Region transit ASes present in the Internet Routing Table: 1472
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798680856
Equivalent to 47 /8s, 154 /16s and 231 /24s
Percentage of available ARIN address space announced: 63.5
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: 87287
Total RIPE prefixes after maximum aggregation: 48108
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79638
Unique aggregates announced from the RIPE address blocks: 50512
RIPE Region origin ASes present in the Internet Routing Table: 15552
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7756
RIPE Region transit ASes present in the Internet Routing Table: 2422
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 755
Number of RIPE addresses announced to Internet: 466993532
Equivalent to 27 /8s, 213 /16s and 193 /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: 32693
Total LACNIC prefixes after maximum aggregation: 7464
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31705
Unique aggregates announced from the LACNIC address blocks: 16481
LACNIC Region origin ASes present in the Internet Routing Table: 1442
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 199
Number of LACNIC addresses announced to Internet: 82674572
Equivalent to 4 /8s, 237 /16s and 131 /24s
Percentage of available LACNIC address space announced: 54.8
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: 7685
Total AfriNIC prefixes after maximum aggregation: 1834
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6059
Unique aggregates announced from the AfriNIC address blocks: 1872
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.74
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: 4.5
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23286272
Equivalent to 1 /8s, 99 /16s and 82 /24s
Percentage of available AfriNIC address space announced: 34.7
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 1873 9507 606 Korea Telecom (KIX)
17974 1822 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1450 378 164 Videsh Sanchar Nigam Ltd. Aut
7545 1439 300 80 TPG Internet Pty Ltd
24560 1138 322 203 Bharti Airtel Ltd.
9583 1056 77 494 Sify Limited
4808 1016 2077 287 CNCGROUP IP network: China169
9829 1006 870 50 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
18101 933 116 137 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 3656 3822 255 bellsouth.net, inc.
4323 2637 1104 395 Time Warner Telecom
1785 1792 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1633 308 40 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1366 6945 894 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1272 536 912 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 520 1780 321 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 420 7608 366 Deutsche Telekom AG
12479 408 577 6 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 1419 265 157 TVCABLE BOGOTA
8151 1357 2669 366 Uninet S.A. de C.V.
28573 1281 988 87 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 908 354 73 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 568 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
14117 492 46 43 Telefonica del Sur S.A.
27947 492 54 48 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 423 90 8 Nile Online
36992 296 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 236 215 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 150 441 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 3656 3822 255 bellsouth.net, inc.
4323 2637 1104 395 Time Warner Telecom
23456 2289 654 1240 >>UNKNOWN<<
4766 1873 9507 606 Korea Telecom (KIX)
17974 1822 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1792 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1633 308 40 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks
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 2637 2242 Time Warner Telecom
17974 1822 1793 PT TELEKOMUNIKASI INDONESIA
1785 1792 1664 AppliedTheory Corporation
6478 1633 1593 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1439 1359 TPG Internet Pty Ltd
4755 1450 1286 Videsh Sanchar Nigam Ltd. Aut
4766 1873 1267 Korea Telecom (KIX)
10620 1419 1262 TVCABLE BOGOTA
11492 1268 1253 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 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
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
31.15.128.0/17 12644 Telemach Autonomous System
31.133.96.0/21 50440 RomEuro Consult SRL
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 /8:22 /9:12 /10:28 /11:78 /12:220
/13:455 /14:785 /15:1406 /16:11749 /17:5984 /18:9815
/19:19690 /20:25897 /21:26021 /22:34123 /23:33125 /24:187310
/25:370 /26:365 /27:165 /28:269 /29:182 /30:618
/31:60 /32:634
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2257 3656 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1587 1633 AT&T Worldnet Services
4323 1341 2637 Time Warner Telecom
10620 1309 1419 TVCABLE BOGOTA
11492 1217 1268 Cable One
23456 1151 2289 >>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)
----------------------------------------------
1:258 2:70 4:18 5:1 6:1 8:348
12:2014 13:1 14:434 15:15 16:3 17:8
20:9 23:5 24:1624 27:722 31:223 32:126
33:3 34:2 37:1 38:763 40:101 41:2373
42:1 44:3 46:865 47:4 49:173 50:363
52:13 55:5 56:2 57:40 58:846 59:478
60:356 61:1269 62:1024 63:1934 64:3952 65:2327
66:4376 67:1847 68:1258 69:3070 70:746 71:350
72:1939 73:3 74:2409 75:311 76:344 77:873
78:696 79:478 80:1109 81:837 82:518 83:462
84:664 85:1095 86:614 87:787 88:337 89:1630
90:183 91:3704 92:519 93:1073 94:1291 95:800
96:463 97:251 98:827 99:35 101:63 103:5
106:1 107:5 108:84 109:953 110:558 111:694
112:327 113:390 114:529 115:683 116:969 117:674
118:804 119:1138 120:292 121:676 122:1627 123:1064
124:1249 125:1268 128:266 129:167 130:172 131:565
132:113 133:19 134:219 135:49 136:214 137:142
138:302 139:115 140:486 141:174 142:400 143:395
144:485 145:53 146:442 147:215 148:582 149:233
150:170 151:187 152:307 153:179 154:3 155:395
156:191 157:355 158:132 159:382 160:317 161:243
162:277 163:164 164:488 165:367 166:511 167:426
168:724 169:155 170:783 171:76 172:1 173:1513
174:534 175:359 177:80 178:869 180:817 181:9
182:431 183:201 184:335 185:1 186:1143 187:810
188:990 189:1003 190:4850 192:5823 193:4852 194:3522
195:3105 196:1189 197:16 198:3580 199:3929 200:5547
201:1511 202:8354 203:8450 204:4134 205:2336 206:2762
207:3035 208:3964 209:3523 210:2735 211:1365 212:2031
213:1771 214:737 215:66 216:4884 217:1667 218:561
219:382 220:1197 221:482 222:341 223:143
End of report
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