Routing Table Report 00:00 GMT Wed 30 Mar, 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: 355856
Prefixes after maximum aggregation: 160966
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173703
Total ASes present in the Internet Routing Table: 37135
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31158
Origin ASes announcing only one prefix: 14946
Transit ASes present in the Internet Routing Table: 5040
Transit-only ASes present in the Internet Routing Table: 131
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2646
Unregistered ASNs in the Routing Table: 247
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 937
Prefixes from 32-bit ASNs in the Routing Table: 2059
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 201
Number of addresses announced to Internet: 2392170043
Equivalent to 142 /8s, 149 /16s and 158 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.8
Total number of prefixes smaller than registry allocations: 147074
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85690
Total APNIC prefixes after maximum aggregation: 28807
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82681
Unique aggregates announced from the APNIC address blocks: 36663
APNIC Region origin ASes present in the Internet Routing Table: 4362
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 689
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 601330881
Equivalent to 35 /8s, 215 /16s and 148 /24s
Percentage of available APNIC address space announced: 76.3
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: 141680
Total ARIN prefixes after maximum aggregation: 72864
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113854
Unique aggregates announced from the ARIN address blocks: 44918
ARIN Region origin ASes present in the Internet Routing Table: 14296
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5425
ARIN Region transit ASes present in the Internet Routing Table: 1466
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797336344
Equivalent to 47 /8s, 134 /16s and 99 /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: 86132
Total RIPE prefixes after maximum aggregation: 47718
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 78649
Unique aggregates announced from the RIPE address blocks: 49986
RIPE Region origin ASes present in the Internet Routing Table: 15473
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7736
RIPE Region transit ASes present in the Internet Routing Table: 2447
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 693
Number of RIPE addresses announced to Internet: 465434940
Equivalent to 27 /8s, 189 /16s and 249 /24s
Percentage of available RIPE address space announced: 75.0
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: 32356
Total LACNIC prefixes after maximum aggregation: 7443
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31272
Unique aggregates announced from the LACNIC address blocks: 16272
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.72
LACNIC Region origin ASes announcing only one prefix: 434
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: 183
Number of LACNIC addresses announced to Internet: 81551500
Equivalent to 4 /8s, 220 /16s and 96 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7640
Total AfriNIC prefixes after maximum aggregation: 1815
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6000
Unique aggregates announced from the AfriNIC address blocks: 1858
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.64
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22683392
Equivalent to 1 /8s, 90 /16s and 31 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1863 9501 598 Korea Telecom (KIX)
7545 1541 301 84 TPG Internet Pty Ltd
4755 1480 649 158 Videsh Sanchar Nigam Ltd. Aut
17974 1460 472 34 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd.
9583 1054 77 497 Sify Limited
9829 996 866 56 BSNL National Internet Backbo
4808 993 2077 293 CNCGROUP IP network: China169
17488 953 162 97 Hathway IP Over Cable Interne
18101 934 116 139 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 3671 3838 263 bellsouth.net, inc.
4323 2559 1104 401 Time Warner Telecom
1785 1789 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1582 303 39 AT&T Worldnet Services
20115 1578 1543 647 Charter Communications
19262 1490 4935 304 Verizon Global Networks
7018 1364 6931 890 AT&T WorldNet Services
11492 1323 240 15 Cable One
22773 1288 2865 80 Cox Communications, Inc.
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 1006 796 166 KPNQwest Backbone AS
9116 544 326 31 Goldenlines main autonomous s
6830 513 1780 316 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 474 96 198 Tellcom Iletisim Hizmetleri
8866 444 133 24 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Corporate Sales
8402 418 320 32 Corbina telecom
20940 418 99 324 Akamai Technologies European
3320 411 7604 358 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 1403 262 152 TVCABLE BOGOTA
28573 1254 971 84 Types of queries are: POCs, o
8151 1247 2674 369 Uninet S.A. de C.V.
6503 1117 354 73 AVANTEL, S.A.
7303 924 465 148 Telecom Argentina Stet-France
14420 641 52 93 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
13489 495 217 107 Orbitel S.A. E.S.P.
11172 487 83 80 Alestra
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 844 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 431 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 151 441 87 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 3671 3838 263 bellsouth.net, inc.
4323 2559 1104 401 Time Warner Telecom
23456 2059 494 1110 >>UNKNOWN<<
4766 1863 9501 598 Korea Telecom (KIX)
1785 1789 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1582 303 39 AT&T Worldnet Services
20115 1578 1543 647 Charter Communications
7545 1541 301 84 TPG Internet Pty Ltd
19262 1490 4935 304 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 2559 2158 Time Warner Telecom
1785 1789 1658 AppliedTheory Corporation
6478 1582 1543 AT&T Worldnet Services
7545 1541 1457 TPG Internet Pty Ltd
17974 1460 1426 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1480 1322 Videsh Sanchar Nigam Ltd. Aut
11492 1323 1308 Cable One
4766 1863 1265 Korea Telecom (KIX)
10620 1403 1251 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
44559 UNALLOCATED 2.56.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.59.0.0/16 29632 The NetAssist autono
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
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
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 >>UNKNOWN<<
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
31.22.80.0/21 8455 ATOM86
31.170.0.0/21 44212 Adelphi Net1 Ltd
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 /8:19 /9:11 /10:26 /11:75 /12:219
/13:448 /14:772 /15:1401 /16:11693 /17:5945 /18:9737
/19:19587 /20:25420 /21:25656 /22:34078 /23:32726 /24:185426
/25:373 /26:344 /27:169 /28:204 /29:189 /30:655
/31:56 /32:627
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2264 3671 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1536 1582 AT&T Worldnet Services
4323 1373 2559 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1272 1323 Cable One
23456 1102 2059 >>UNKNOWN<<
7011 1063 1164 Citizens Utilities
1785 1056 1789 AppliedTheory Corporation
6503 900 1117 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:77 4:18 5:1 8:348 12:2024
13:1 14:427 15:15 16:3 17:8 20:9
23:5 24:1607 27:699 31:21 32:126 33:3
34:2 37:1 38:748 39:1 40:101 41:2379
44:3 46:779 47:4 49:146 50:130 52:13
55:4 56:2 57:40 58:819 59:503 60:387
61:1174 62:1021 63:1929 64:3907 65:2357 66:4388
67:1830 68:1253 69:3021 70:740 71:349 72:1927
73:3 74:2388 75:298 76:345 77:858 78:700
79:464 80:1110 81:830 82:524 83:475 84:663
85:1052 86:556 87:795 88:350 89:1600 90:175
91:3666 92:509 93:1050 94:1258 95:799 96:456
97:251 98:818 99:35 101:49 106:1 107:4
108:80 109:937 110:516 111:680 112:329 113:387
114:520 115:718 116:954 117:675 118:752 119:1108
120:288 121:763 122:1608 123:1059 124:1312 125:1256
128:267 129:174 130:173 131:566 132:109 133:20
134:218 135:49 136:213 137:142 138:301 139:118
140:487 141:173 142:383 143:390 144:481 145:52
146:439 147:207 148:638 149:261 150:166 151:187
152:298 153:180 154:3 155:383 156:185 157:349
158:131 159:380 160:317 161:208 162:278 163:165
164:492 165:368 166:501 167:411 168:722 169:154
170:783 171:70 172:2 173:1272 174:535 175:350
177:75 178:761 180:794 181:4 182:410 183:193
184:314 185:1 186:1119 187:903 188:925 189:1033
190:4724 192:5803 193:4807 194:3538 195:3097 196:1220
197:15 198:3604 199:3887 200:5573 201:1498 202:8395
203:8449 204:4119 205:2326 206:2663 207:3029 208:3919
209:3506 210:2725 211:1366 212:2028 213:1759 214:767
215:66 216:4904 217:1646 218:560 219:382 220:1198
221:482 222:313 223:104
End of report
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