Routing Table Report 00:00 GMT Mon 28 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: 355656
Prefixes after maximum aggregation: 160861
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173513
Total ASes present in the Internet Routing Table: 37096
Prefixes per ASN: 9.59
Origin-only ASes present in the Internet Routing Table: 31146
Origin ASes announcing only one prefix: 14936
Transit ASes present in the Internet Routing Table: 5021
Transit-only ASes present in the Internet Routing Table: 123
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: 2578
Unregistered ASNs in the Routing Table: 246
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 929
Prefixes from 32-bit ASNs in the Routing Table: 2036
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 198
Number of addresses announced to Internet: 2391475899
Equivalent to 142 /8s, 139 /16s and 6 /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: 89.7
Total number of prefixes smaller than registry allocations: 147000
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85558
Total APNIC prefixes after maximum aggregation: 28808
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82528
Unique aggregates announced from the APNIC address blocks: 36637
APNIC Region origin ASes present in the Internet Routing Table: 4354
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1222
APNIC Region transit ASes present in the Internet Routing Table: 680
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 45
Number of APNIC addresses announced to Internet: 600807873
Equivalent to 35 /8s, 207 /16s and 153 /24s
Percentage of available APNIC address space announced: 76.2
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: 141597
Total ARIN prefixes after maximum aggregation: 72811
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113722
Unique aggregates announced from the ARIN address blocks: 44844
ARIN Region origin ASes present in the Internet Routing Table: 14290
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5417
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: 10
Number of ARIN addresses announced to Internet: 797323288
Equivalent to 47 /8s, 134 /16s and 48 /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: 86092
Total RIPE prefixes after maximum aggregation: 47735
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 78632
Unique aggregates announced from the RIPE address blocks: 49951
RIPE Region origin ASes present in the Internet Routing Table: 15471
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7734
RIPE Region transit ASes present in the Internet Routing Table: 2442
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 687
Number of RIPE addresses announced to Internet: 465372604
Equivalent to 27 /8s, 189 /16s and 5 /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: 32481
Total LACNIC prefixes after maximum aggregation: 7384
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 31417
Unique aggregates announced from the LACNIC address blocks: 16236
LACNIC Region origin ASes present in the Internet Routing Table: 1437
LACNIC Prefixes per ASN: 21.86
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 262
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: 182
Number of LACNIC addresses announced to Internet: 81516684
Equivalent to 4 /8s, 219 /16s and 216 /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: 7634
Total AfriNIC prefixes after maximum aggregation: 1820
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5994
Unique aggregates announced from the AfriNIC address blocks: 1866
AfriNIC Region origin ASes present in the Internet Routing Table: 436
AfriNIC Prefixes per ASN: 13.75
AfriNIC Region origin ASes announcing only one prefix: 131
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: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22674944
Equivalent to 1 /8s, 89 /16s and 254 /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 1852 9501 593 Korea Telecom (KIX)
7545 1553 301 84 TPG Internet Pty Ltd
4755 1477 393 156 Videsh Sanchar Nigam Ltd. Aut
17974 1446 472 34 PT TELEKOMUNIKASI INDONESIA
24560 1134 322 204 Bharti Airtel Ltd.
9583 1055 77 493 Sify Limited
9829 1004 868 53 BSNL National Internet Backbo
4808 969 2065 287 CNCGROUP IP network: China169
17488 951 162 96 Hathway IP Over Cable Interne
18101 938 116 142 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 260 bellsouth.net, inc.
4323 2558 1104 401 Time Warner Telecom
1785 1786 681 128 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1544 648 Charter Communications
6478 1572 302 37 AT&T Worldnet Services
19262 1488 4935 304 Verizon Global Networks
7018 1365 6803 891 AT&T WorldNet Services
11492 1326 240 15 Cable One
22773 1285 2865 79 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 1007 796 167 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 515 1780 317 UPC Distribution Services
3292 510 2013 392 TDC Tele Danmark
34984 454 95 205 Tellcom Iletisim Hizmetleri
8866 444 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Corporate Sales
20940 416 98 322 Akamai Technologies European
3320 411 7604 358 Deutsche Telekom AG
8402 408 320 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 1403 262 152 TVCABLE BOGOTA
28573 1250 970 83 Types of queries are: POCs, o
8151 1243 2673 365 Uninet S.A. de C.V.
6503 1225 354 73 AVANTEL, S.A.
7303 922 465 148 Telecom Argentina Stet-France
14420 638 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
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 847 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 429 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 260 bellsouth.net, inc.
4323 2558 1104 401 Time Warner Telecom
23456 2036 492 1102 >>UNKNOWN<<
4766 1852 9501 593 Korea Telecom (KIX)
1785 1786 681 128 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1544 648 Charter Communications
6478 1572 302 37 AT&T Worldnet Services
7545 1553 301 84 TPG Internet Pty Ltd
19262 1488 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 2558 2157 Time Warner Telecom
1785 1786 1658 AppliedTheory Corporation
6478 1572 1535 AT&T Worldnet Services
7545 1553 1469 TPG Internet Pty Ltd
17974 1446 1412 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1477 1321 Videsh Sanchar Nigam Ltd. Aut
11492 1326 1311 Cable One
4766 1852 1259 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
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
41.57.192.0/18 22750 BCSNET
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 /8:19 /9:11 /10:26 /11:75 /12:219
/13:448 /14:771 /15:1398 /16:11693 /17:5936 /18:9739
/19:19583 /20:25392 /21:25643 /22:34005 /23:32714 /24:185365
/25:372 /26:342 /27:170 /28:205 /29:187 /30:658
/31:54 /32:631
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 1526 1572 AT&T Worldnet Services
4323 1373 2558 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1274 1326 Cable One
23456 1105 2036 >>UNKNOWN<<
7011 1063 1164 Citizens Utilities
1785 1056 1786 AppliedTheory Corporation
6503 1001 1225 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:289 2:71 4:18 5:1 8:347 12:2022
13:1 14:428 15:15 16:3 17:8 20:9
23:3 24:1585 27:700 31:14 32:126 33:3
34:2 37:1 38:749 39:1 40:101 41:2371
44:3 46:758 47:4 49:146 50:124 52:13
55:4 56:2 57:41 58:819 59:501 60:387
61:1170 62:1018 63:1924 64:3905 65:2361 66:4383
67:1831 68:1238 69:3015 70:746 71:365 72:1927
73:3 74:2385 75:298 76:347 77:860 78:698
79:470 80:1100 81:828 82:526 83:475 84:661
85:1053 86:557 87:789 88:350 89:1595 90:176
91:3670 92:505 93:1048 94:1254 95:794 96:452
97:252 98:818 99:35 101:49 106:1 107:4
108:48 109:937 110:518 111:677 112:325 113:385
114:514 115:719 116:986 117:672 118:760 119:1089
120:284 121:762 122:1609 123:1060 124:1320 125:1257
128:266 129:175 130:173 131:564 132:109 133:20
134:218 135:49 136:213 137:142 138:300 139:125
140:486 141:173 142:383 143:392 144:482 145:52
146:439 147:201 148:633 149:261 150:167 151:187
152:298 153:180 154:3 155:390 156:185 157:348
158:131 159:379 160:315 161:208 162:278 163:165
164:494 165:368 166:501 167:411 168:721 169:156
170:778 171:70 172:2 173:1268 174:536 175:350
177:74 178:762 180:792 181:4 182:410 183:192
184:313 185:1 186:1119 187:900 188:920 189:1031
190:4765 192:5802 193:4818 194:3540 195:3079 196:1223
197:15 198:3606 199:3887 200:5584 201:1600 202:8401
203:8460 204:4115 205:2318 206:2655 207:3031 208:3920
209:3505 210:2730 211:1366 212:2005 213:1766 214:758
215:66 216:4898 217:1630 218:561 219:382 220:1196
221:478 222:311 223:103
End of report
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