Routing Table Report 04:00 +10GMT Thu 07 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 352390
Prefixes after maximum aggregation: 159953
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174474
Total ASes present in the Internet Routing Table: 37192
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31220
Origin ASes announcing only one prefix: 15026
Transit ASes present in the Internet Routing Table: 5014
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 532
Unregistered ASNs in the Routing Table: 236
Number of 32-bit ASNs allocated by the RIRs: 1260
Number of 32-bit ASNs visible in the Routing Table: 958
Prefixes from 32-bit ASNs in the Routing Table: 2119
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 193
Number of addresses announced to Internet: 2406477856
Equivalent to 143 /8s, 111 /16s and 240 /24s
Percentage of available address space announced: 64.9
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.2
Total number of prefixes smaller than registry allocations: 146069
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87715
Total APNIC prefixes after maximum aggregation: 29903
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 84677
Unique aggregates announced from the APNIC address blocks: 36740
APNIC Region origin ASes present in the Internet Routing Table: 4390
APNIC Prefixes per ASN: 19.29
APNIC Region origin ASes announcing only one prefix: 1210
APNIC Region transit ASes present in the Internet Routing Table: 704
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 605563680
Equivalent to 36 /8s, 24 /16s and 43 /24s
Percentage of available APNIC address space announced: 76.8
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: 138825
Total ARIN prefixes after maximum aggregation: 70867
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111337
Unique aggregates announced from the ARIN address blocks: 45066
ARIN Region origin ASes present in the Internet Routing Table: 14302
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5465
ARIN Region transit ASes present in the Internet Routing Table: 1484
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: 10
Number of ARIN addresses announced to Internet: 797696256
Equivalent to 47 /8s, 139 /16s and 225 /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: 83456
Total RIPE prefixes after maximum aggregation: 47552
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76693
Unique aggregates announced from the RIPE address blocks: 50572
RIPE Region origin ASes present in the Internet Routing Table: 15475
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7788
RIPE Region transit ASes present in the Internet Routing Table: 2415
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 707
Number of RIPE addresses announced to Internet: 465785088
Equivalent to 27 /8s, 195 /16s and 81 /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: 32346
Total LACNIC prefixes after maximum aggregation: 7407
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31262
Unique aggregates announced from the LACNIC address blocks: 16283
LACNIC Region origin ASes present in the Internet Routing Table: 1435
LACNIC Prefixes per ASN: 21.79
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 259
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 189
Number of LACNIC addresses announced to Internet: 81831552
Equivalent to 4 /8s, 224 /16s and 166 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7668
Total AfriNIC prefixes after maximum aggregation: 1825
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6033
Unique aggregates announced from the AfriNIC address blocks: 1861
AfriNIC Region origin ASes present in the Internet Routing Table: 442
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22706688
Equivalent to 1 /8s, 90 /16s and 122 /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 2439 9515 909 Korea Telecom (KIX)
7545 1548 301 85 TPG Internet Pty Ltd
17974 1449 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1440 634 167 TATA Communications formerly
24560 1137 322 204 Bharti Airtel Ltd., Telemedia
4808 1060 2139 294 CNCGROUP IP network: China169
9583 1055 77 494 Sify Limited
9829 966 839 58 BSNL National Internet Backbo
17488 941 162 97 Hathway IP Over Cable Interne
18101 935 116 139 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 3666 3838 262 bellsouth.net, inc.
4323 2538 1090 394 Time Warner Telecom
1785 1790 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1605 305 34 AT&T Worldnet Services
20115 1535 1551 641 Charter Communications
19262 1491 4939 299 Verizon Global Networks
7018 1352 6785 878 AT&T WorldNet Services
22773 1292 2865 84 Cox Communications, Inc.
2386 1281 537 924 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 515 1780 319 UPC Distribution Services
34984 495 97 188 BILISIM TELEKOM
29049 469 34 35 AzerSat LLC.
3292 454 2013 391 TDC Tele Danmark
20940 451 127 341 Akamai Technologies European
8866 446 134 26 Bulgarian Telecommunication C
3320 413 7604 359 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 399 577 6 Uni2 Autonomous System
702 394 1800 307 UUNET - Commercial IP service
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 1408 262 153 TVCABLE BOGOTA
28573 1270 972 86 NET Servicos de Comunicao S.A
8151 1239 2677 372 UniNet S.A. de C.V.
6503 1111 354 72 AVANTEL, S.A.
7303 924 465 149 Telecom Argentina Stet-France
14420 645 52 89 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 513 225 102 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 853 445 11 TEDATA
24863 776 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 291 271 14 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 223 78 10 RAYA Telecom - Egypt
29571 191 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 3666 3838 262 bellsouth.net, inc.
4323 2538 1090 394 Time Warner Telecom
4766 2439 9515 909 Korea Telecom (KIX)
23456 2119 608 1150 32-bit ASN transition
1785 1790 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1605 305 34 AT&T Worldnet Services
7545 1548 301 85 TPG Internet Pty Ltd
20115 1535 1551 641 Charter Communications
19262 1491 4939 299 Verizon Global Networks
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 2538 2144 Time Warner Telecom
1785 1790 1659 PaeTec Communications, Inc.
6478 1605 1571 AT&T Worldnet Services
4766 2439 1530 Korea Telecom (KIX)
7545 1548 1463 TPG Internet Pty Ltd
17974 1449 1416 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1440 1273 TATA Communications formerly
10620 1408 1255 TVCABLE BOGOTA
11492 1267 1252 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
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
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 E-Rent LLC
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
31.0.0.0/15 8374 Polkomtel S.A.
31.2.0.0/17 8374 Polkomtel S.A.
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 /8:19 /9:12 /10:26 /11:75 /12:219
/13:448 /14:771 /15:1377 /16:11574 /17:5723 /18:9439
/19:19098 /20:24914 /21:25360 /22:33685 /23:32182 /24:184308
/25:1132 /26:1275 /27:697 /28:40 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2261 3666 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1559 1605 AT&T Worldnet Services
4323 1360 2538 Time Warner Telecom
10620 1298 1408 TVCABLE BOGOTA
11492 1216 1267 Cable One
23456 1096 2119 32-bit ASN transition
7011 1068 1168 Citizens Utilities
1785 1057 1790 PaeTec Communications, Inc.
6503 896 1111 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:296 2:55 4:14 5:1 8:350 12:2007
13:1 14:434 15:15 16:3 17:8 20:9
23:5 24:1584 27:709 31:213 32:60 33:3
34:2 37:1 38:752 39:1 40:101 41:2396
42:1 44:3 46:781 47:4 49:172 50:215
52:13 55:5 56:2 57:30 58:842 59:486
60:387 61:1159 62:1003 63:1918 64:3876 65:2334
66:4306 67:1810 68:1078 69:2937 70:702 71:343
72:1897 73:1 74:2329 75:285 76:337 77:852
78:688 79:463 80:1088 81:822 82:508 83:464
84:648 85:1038 86:553 87:761 88:340 89:1583
90:175 91:3654 92:495 93:1053 94:1259 95:777
96:461 97:252 98:823 99:35 101:61 106:2
107:4 108:78 109:940 110:530 111:680 112:328
113:385 114:514 115:703 116:933 117:674 118:763
119:1129 120:288 121:713 122:1617 123:1057 124:1274
125:1252 128:265 129:174 130:172 131:563 132:101
133:20 134:217 135:49 136:213 137:142 138:301
139:105 140:483 141:173 142:377 143:386 144:480
145:52 146:443 147:202 148:627 149:273 150:169
151:187 152:298 153:180 154:3 155:390 156:187
157:354 158:131 159:381 160:317 161:241 162:276
163:165 164:489 165:350 166:504 167:416 168:724
169:154 170:779 171:74 172:2 173:1258 174:533
175:351 177:75 178:804 180:810 181:5 182:417
183:199 184:241 185:1 186:1103 187:914 188:935
189:1041 190:4825 192:5774 193:4804 194:3467 195:2947
196:1209 197:17 198:3583 199:3886 200:5560 201:1483
202:8372 203:8463 204:4127 205:2316 206:2652 207:3006
208:3920 209:3505 210:2722 211:1363 212:1973 213:1715
214:740 215:66 216:4863 217:1641 218:555 219:383
220:1193 221:480 222:312 223:117
End of report
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