Routing Table Report 04:00 +10GMT Mon 18 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 354522
Prefixes after maximum aggregation: 160426
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 174982
Total ASes present in the Internet Routing Table: 37327
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31294
Origin ASes announcing only one prefix: 15053
Transit ASes present in the Internet Routing Table: 5031
Transit-only ASes present in the Internet Routing Table: 132
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 598
Unregistered ASNs in the Routing Table: 264
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 1002
Prefixes from 32-bit ASNs in the Routing Table: 2199
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 147
Number of addresses announced to Internet: 2412493504
Equivalent to 143 /8s, 203 /16s and 186 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
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: 147052
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88190
Total APNIC prefixes after maximum aggregation: 29878
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 85197
Unique aggregates announced from the APNIC address blocks: 36800
APNIC Region origin ASes present in the Internet Routing Table: 4405
APNIC Prefixes per ASN: 19.34
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 699
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610262304
Equivalent to 36 /8s, 95 /16s and 221 /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: 139733
Total ARIN prefixes after maximum aggregation: 71027
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112215
Unique aggregates announced from the ARIN address blocks: 45120
ARIN Region origin ASes present in the Internet Routing Table: 14325
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5470
ARIN Region transit ASes present in the Internet Routing Table: 1488
Average ARIN Region AS path length visible: 3.9
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: 797924096
Equivalent to 47 /8s, 143 /16s and 91 /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: 84012
Total RIPE prefixes after maximum aggregation: 47763
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77119
Unique aggregates announced from the RIPE address blocks: 50788
RIPE Region origin ASes present in the Internet Routing Table: 15523
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7797
RIPE Region transit ASes present in the Internet Routing Table: 2424
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 744
Number of RIPE addresses announced to Internet: 466070912
Equivalent to 27 /8s, 199 /16s and 173 /24s
Percentage of available RIPE address space announced: 75.1
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: 32402
Total LACNIC prefixes after maximum aggregation: 7427
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31366
Unique aggregates announced from the LACNIC address blocks: 16406
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.78
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 194
Number of LACNIC addresses announced to Internet: 82246528
Equivalent to 4 /8s, 230 /16s and 251 /24s
Percentage of available LACNIC address space announced: 54.5
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: 7706
Total AfriNIC prefixes after maximum aggregation: 1825
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6078
Unique aggregates announced from the AfriNIC address blocks: 1877
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.63
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.7
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: 22758656
Equivalent to 1 /8s, 91 /16s and 69 /24s
Percentage of available AfriNIC address space announced: 33.9
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 2433 9484 902 Korea Telecom (KIX)
17974 1807 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1544 300 81 TPG Internet Pty Ltd
4755 1446 638 167 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
9583 1055 77 496 Sify Limited
4808 1035 2102 293 CNCGROUP IP network: China169
9829 1003 868 53 BSNL National Internet Backbo
17488 942 164 98 Hathway IP Over Cable Interne
18101 934 116 139 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3661 3822 257 bellsouth.net, inc.
4323 2649 1090 396 Time Warner Telecom
1785 1788 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1535 1552 639 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1354 6801 882 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1269 536 911 AT&T Data Communications Serv
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 518 1780 320 UPC Distribution Services
34984 505 98 183 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 454 1997 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 436 126 335 Akamai Technologies European
3320 418 7607 364 Deutsche Telekom AG
12479 407 577 6 Uni2 Autonomous System
8402 404 320 11 Corbina telecom
8551 403 353 46 Bezeq International
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1426 265 157 TVCABLE BOGOTA
28573 1279 972 86 NET Servicos de Comunicao S.A
8151 1250 2686 374 UniNet S.A. de C.V.
7303 928 467 148 Telecom Argentina Stet-France
6503 895 354 64 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 568 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 Servicios Alestra S.A de C.V
27947 480 53 53 Telconet S.A
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 840 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 295 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 220 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3661 3822 257 bellsouth.net, inc.
4323 2649 1090 396 Time Warner Telecom
4766 2433 9484 902 Korea Telecom (KIX)
23456 2199 644 1205 32-bit ASN transition
17974 1807 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
7545 1544 300 81 TPG Internet Pty Ltd
20115 1535 1552 639 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2649 2253 Time Warner Telecom
17974 1807 1778 PT TELEKOMUNIKASI INDONESIA
1785 1788 1660 PaeTec Communications, Inc.
6478 1624 1589 AT&T Worldnet Services
4766 2433 1531 Korea Telecom (KIX)
18566 1760 1531 Covad Communications
7545 1544 1463 TPG Internet Pty Ltd
4755 1446 1279 TATA Communications formerly
10620 1426 1269 TVCABLE BOGOTA
11492 1263 1248 Cable One
Complete listing at http://thyme.rand.apnic.net/current/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 4323 Time Warner Telecom
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/current/data-badAS
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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
Complete listing at http://thyme.rand.apnic.net/current/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 /11:77 /12:219
/13:452 /14:775 /15:1376 /16:11608 /17:5741 /18:9474
/19:19154 /20:25183 /21:25593 /22:33701 /23:32589 /24:185360
/25:1124 /26:1280 /27:701 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2258 3661 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1578 1624 AT&T Worldnet Services
4323 1345 2649 Time Warner Telecom
10620 1316 1426 TVCABLE BOGOTA
11492 1212 1263 Cable One
23456 1131 2199 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1058 1788 PaeTec Communications, Inc.
22773 842 1298 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:256 2:66 4:14 5:1 8:349 12:2007
13:1 14:436 15:15 16:3 17:8 20:9
23:5 24:1604 27:720 31:221 32:60 33:2
34:2 37:1 38:764 40:101 41:2397 42:1
44:3 46:852 47:4 49:173 50:358 52:13
55:4 56:2 57:31 58:844 59:480 60:387
61:1239 62:1008 63:1922 64:3924 65:2325 66:4349
67:1813 68:1081 69:2956 70:700 71:345 72:1907
73:1 74:2338 75:299 76:337 77:840 78:690
79:464 80:1089 81:828 82:504 83:455 84:646
85:1076 86:563 87:759 88:331 89:1589 90:181
91:3707 92:512 93:1061 94:1253 95:785 96:455
97:250 98:822 99:35 101:62 103:1 106:1
107:4 108:84 109:952 110:545 111:689 112:325
113:388 114:522 115:681 116:942 117:674 118:805
119:1141 120:290 121:675 122:1627 123:1065 124:1247
125:1265 128:265 129:163 130:171 131:566 132:113
133:20 134:217 135:49 136:214 137:142 138:301
139:103 140:486 141:174 142:398 143:392 144:484
145:53 146:441 147:204 148:593 149:233 150:170
151:187 152:305 153:180 154:3 155:394 156:190
157:354 158:132 159:382 160:316 161:244 162:277
163:164 164:488 165:337 166:513 167:427 168:724
169:154 170:781 171:75 172:1 173:1493 174:530
175:359 177:71 178:853 180:815 181:7 182:426
183:197 184:251 185:1 186:1136 187:792 188:988
189:1000 190:4835 192:5782 193:4828 194:3468 195:2966
196:1204 197:16 198:3563 199:3917 200:5519 201:1497
202:8334 203:8452 204:4117 205:2320 206:2730 207:3025
208:3957 209:3496 210:2735 211:1361 212:1984 213:1725
214:732 215:67 216:4865 217:1658 218:555 219:384
220:1197 221:476 222:341 223:137
End of report
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