Routing Table Report 00:00 GMT Fri 01 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: 356154
Prefixes after maximum aggregation: 161053
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173955
Total ASes present in the Internet Routing Table: 37159
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31160
Origin ASes announcing only one prefix: 14974
Transit ASes present in the Internet Routing Table: 5056
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2693
Unregistered ASNs in the Routing Table: 246
Number of 32-bit ASNs allocated by the RIRs: 1250
Number of 32-bit ASNs visible in the Routing Table: 943
Prefixes from 32-bit ASNs in the Routing Table: 2099
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 231
Number of addresses announced to Internet: 2393162428
Equivalent to 142 /8s, 164 /16s and 194 /24s
Percentage of available address space announced: 64.6
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.0
Total number of prefixes smaller than registry allocations: 147361
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85479
Total APNIC prefixes after maximum aggregation: 28826
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82478
Unique aggregates announced from the APNIC address blocks: 36717
APNIC Region origin ASes present in the Internet Routing Table: 4366
APNIC Prefixes per ASN: 18.89
APNIC Region origin ASes announcing only one prefix: 1225
APNIC Region transit ASes present in the Internet Routing Table: 691
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 45
Number of APNIC addresses announced to Internet: 601530305
Equivalent to 35 /8s, 218 /16s and 159 /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: 141681
Total ARIN prefixes after maximum aggregation: 72839
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 113867
Unique aggregates announced from the ARIN address blocks: 44936
ARIN Region origin ASes present in the Internet Routing Table: 14305
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5438
ARIN Region transit ASes present in the Internet Routing Table: 1475
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: 10
Number of ARIN addresses announced to Internet: 797522200
Equivalent to 47 /8s, 137 /16s and 57 /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: 86444
Total RIPE prefixes after maximum aggregation: 47792
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 78885
Unique aggregates announced from the RIPE address blocks: 50127
RIPE Region origin ASes present in the Internet Routing Table: 15481
RIPE Prefixes per ASN: 5.10
RIPE Region origin ASes announcing only one prefix: 7743
RIPE Region transit ASes present in the Internet Routing Table: 2446
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 700
Number of RIPE addresses announced to Internet: 465794748
Equivalent to 27 /8s, 195 /16s and 118 /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: 32484
Total LACNIC prefixes after maximum aggregation: 7427
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31400
Unique aggregates announced from the LACNIC address blocks: 16292
LACNIC Region origin ASes present in the Internet Routing Table: 1443
LACNIC Prefixes per ASN: 21.76
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: 81613196
Equivalent to 4 /8s, 221 /16s and 81 /24s
Percentage of available LACNIC address space announced: 54.1
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: 7664
Total AfriNIC prefixes after maximum aggregation: 1826
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6020
Unique aggregates announced from the AfriNIC address blocks: 1858
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.3
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: 22701568
Equivalent to 1 /8s, 90 /16s and 102 /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 1869 9506 601 Korea Telecom (KIX)
7545 1545 301 85 TPG Internet Pty Ltd
17974 1448 472 34 PT TELEKOMUNIKASI INDONESIA
4755 1431 378 165 Videsh Sanchar Nigam Ltd. Aut
24560 1135 322 204 Bharti Airtel Ltd.
9583 1056 77 492 Sify Limited
9829 1006 869 51 BSNL National Internet Backbo
4808 1000 2084 295 CNCGROUP IP network: China169
17488 955 162 98 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 3669 3838 258 bellsouth.net, inc.
4323 2559 1107 398 Time Warner Telecom
1785 1790 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1590 304 43 AT&T Worldnet Services
20115 1579 1543 648 Charter Communications
19262 1490 4935 304 Verizon Global Networks
7018 1362 6930 889 AT&T WorldNet Services
11492 1323 240 15 Cable One
22773 1291 2865 84 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 1008 796 166 KPNQwest Backbone AS
9116 544 326 31 Goldenlines main autonomous s
6830 513 1780 316 UPC Distribution Services
3292 508 2013 391 TDC Tele Danmark
34984 474 96 199 Tellcom Iletisim Hizmetleri
8866 445 133 25 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Corporate Sales
20940 420 99 325 Akamai Technologies European
8402 413 320 32 Corbina telecom
3320 412 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 1405 262 152 TVCABLE BOGOTA
28573 1261 971 84 Types of queries are: POCs, o
8151 1247 2664 370 Uninet S.A. de C.V.
6503 1116 354 72 AVANTEL, S.A.
7303 924 465 148 Telecom Argentina Stet-France
14420 642 52 91 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
11172 487 83 80 Alestra
27947 484 53 51 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 774 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 230 13 5 Starcomms Nigeria Limited
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 3669 3838 258 bellsouth.net, inc.
4323 2559 1107 398 Time Warner Telecom
23456 2099 500 1122 >>UNKNOWN<<
4766 1869 9506 601 Korea Telecom (KIX)
1785 1790 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1590 304 43 AT&T Worldnet Services
20115 1579 1543 648 Charter Communications
7545 1545 301 85 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 2161 Time Warner Telecom
1785 1790 1659 AppliedTheory Corporation
6478 1590 1547 AT&T Worldnet Services
7545 1545 1460 TPG Internet Pty Ltd
17974 1448 1414 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
11492 1323 1308 Cable One
4766 1869 1268 Korea Telecom (KIX)
4755 1431 1266 Videsh Sanchar Nigam Ltd. Aut
10620 1405 1253 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 2.58.0.0/16 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 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 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
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
31.170.48.0/20 44208 Farahoosh Dena
31.170.64.0/19 8887 TESATEL, s.r.o.
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 /15:1403 /16:11715 /17:5955 /18:9753
/19:19599 /20:25493 /21:25718 /22:34060 /23:32703 /24:185547
/25:371 /26:347 /27:175 /28:205 /29:198 /30:654
/31:57 /32:631
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2262 3669 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1544 1590 AT&T Worldnet Services
4323 1373 2559 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1272 1323 Cable One
23456 1112 2099 >>UNKNOWN<<
7011 1064 1164 Citizens Utilities
1785 1056 1790 AppliedTheory Corporation
6503 900 1116 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 2:74 4:18 5:1 8:348 12:2016
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1607 27:709 31:53 32:126 33:3
34:2 37:1 38:750 39:1 40:101 41:2372
44:3 46:786 47:4 49:141 50:138 52:13
55:5 56:2 57:40 58:827 59:489 60:387
61:1151 62:1022 63:1930 64:3911 65:2344 66:4373
67:1835 68:1255 69:3023 70:742 71:349 72:1927
73:3 74:2388 75:299 76:344 77:891 78:702
79:462 80:1093 81:826 82:519 83:475 84:665
85:1053 86:605 87:794 88:349 89:1597 90:175
91:3674 92:511 93:1054 94:1266 95:801 96:458
97:253 98:821 99:35 101:49 106:1 107:4
108:80 109:935 110:518 111:680 112:332 113:387
114:521 115:674 116:956 117:675 118:768 119:1129
120:289 121:712 122:1610 123:1057 124:1287 125:1252
128:266 129:177 130:173 131:566 132:109 133:20
134:218 135:49 136:212 137:142 138:301 139:124
140:484 141:173 142:381 143:391 144:481 145:52
146:442 147:208 148:638 149:261 150:166 151:187
152:298 153:180 154:3 155:390 156:187 157:349
158:131 159:381 160:317 161:209 162:278 163:165
164:494 165:367 166:502 167:414 168:721 169:155
170:783 171:74 172:2 173:1276 174:535 175:348
177:78 178:776 180:799 181:4 182:412 183:193
184:318 185:1 186:1124 187:906 188:928 189:1037
190:4807 192:5802 193:4815 194:3534 195:3084 196:1219
197:15 198:3602 199:3885 200:5564 201:1500 202:8381
203:8452 204:4123 205:2323 206:2665 207:3029 208:3910
209:3510 210:2728 211:1367 212:2026 213:1759 214:761
215:66 216:4905 217:1649 218:562 219:374 220:1200
221:481 222:314 223:104
End of report
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