Routing Table Report 04:00 +10GMT Thu 05 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356797
Prefixes after maximum aggregation: 161287
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176104
Total ASes present in the Internet Routing Table: 37481
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31355
Origin ASes announcing only one prefix: 15075
Transit ASes present in the Internet Routing Table: 5081
Transit-only ASes present in the Internet Routing Table: 139
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 590
Unregistered ASNs in the Routing Table: 298
Number of 32-bit ASNs allocated by the RIRs: 1325
Number of 32-bit ASNs visible in the Routing Table: 1045
Prefixes from 32-bit ASNs in the Routing Table: 2370
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 212
Number of addresses announced to Internet: 2423170752
Equivalent to 144 /8s, 110 /16s and 166 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 148215
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89310
Total APNIC prefixes after maximum aggregation: 29938
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85693
Unique aggregates announced from the APNIC address blocks: 36866
APNIC Region origin ASes present in the Internet Routing Table: 4430
APNIC Prefixes per ASN: 19.34
APNIC Region origin ASes announcing only one prefix: 1230
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 612831776
Equivalent to 36 /8s, 135 /16s and 18 /24s
Percentage of available APNIC address space announced: 77.7
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: 140361
Total ARIN prefixes after maximum aggregation: 71359
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112672
Unique aggregates announced from the ARIN address blocks: 45285
ARIN Region origin ASes present in the Internet Routing Table: 14357
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5486
ARIN Region transit ASes present in the Internet Routing Table: 1493
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: 12
Number of ARIN addresses announced to Internet: 799844608
Equivalent to 47 /8s, 172 /16s and 169 /24s
Percentage of available ARIN address space announced: 63.6
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: 84041
Total RIPE prefixes after maximum aggregation: 48008
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77406
Unique aggregates announced from the RIPE address blocks: 51228
RIPE Region origin ASes present in the Internet Routing Table: 15569
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7806
RIPE Region transit ASes present in the Internet Routing Table: 2455
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: 775
Number of RIPE addresses announced to Internet: 468008448
Equivalent to 27 /8s, 229 /16s and 62 /24s
Percentage of available RIPE address space announced: 75.4
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: 32725
Total LACNIC prefixes after maximum aggregation: 7483
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31762
Unique aggregates announced from the LACNIC address blocks: 16604
LACNIC Region origin ASes present in the Internet Routing Table: 1443
LACNIC Prefixes per ASN: 22.01
LACNIC Region origin ASes announcing only one prefix: 418
LACNIC Region transit ASes present in the Internet Routing Table: 268
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: 205
Number of LACNIC addresses announced to Internet: 83065856
Equivalent to 4 /8s, 243 /16s and 124 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7771
Total AfriNIC prefixes after maximum aggregation: 1847
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6137
Unique aggregates announced from the AfriNIC address blocks: 1895
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.73
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.7
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: 23042304
Equivalent to 1 /8s, 95 /16s and 153 /24s
Percentage of available AfriNIC address space announced: 34.3
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 2436 9490 906 Korea Telecom (KIX)
17974 1804 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1561 301 85 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
7552 1205 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
9583 1057 77 492 Sify Limited
9829 1038 874 51 BSNL National Internet Backbo
4808 1036 2087 294 CNCGROUP IP network: China169
17488 945 165 100 Hathway IP Over Cable Interne
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 3647 3822 255 bellsouth.net, inc.
4323 2600 1087 398 Time Warner Telecom
18566 1807 350 239 Covad Communications
1785 1785 681 127 PaeTec Communications, Inc.
6478 1665 312 50 AT&T Worldnet Services
20115 1531 1536 636 Charter Communications
19262 1482 4920 328 Verizon Global Networks
7018 1357 6927 888 AT&T WorldNet Services
22773 1302 2865 85 Cox Communications, Inc.
2386 1264 536 907 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 520 1780 322 UPC Distribution Services
34984 508 106 184 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
29049 449 32 47 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
20940 443 129 339 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 411 577 6 Uni2 Autonomous System
8551 405 355 45 Bezeq International
702 397 1802 310 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 1458 270 155 TVCABLE BOGOTA
8151 1366 2698 363 UniNet S.A. de C.V.
28573 1293 990 88 NET Servicos de Comunicao S.A
7303 928 467 148 Telecom Argentina Stet-France
6503 799 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 493 84 82 Servicios Alestra S.A de C.V
13489 486 229 116 Orbitel S.A. E.S.P.
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 881 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 219 12 10 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 149 441 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 3647 3822 255 bellsouth.net, inc.
4323 2600 1087 398 Time Warner Telecom
4766 2436 9490 906 Korea Telecom (KIX)
23456 2370 664 1279 32-bit ASN transition
18566 1807 350 239 Covad Communications
17974 1804 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1785 681 127 PaeTec Communications, Inc.
6478 1665 312 50 AT&T Worldnet Services
7545 1561 301 85 TPG Internet Pty Ltd
20115 1531 1536 636 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 2600 2202 Time Warner Telecom
17974 1804 1775 PT TELEKOMUNIKASI INDONESIA
1785 1785 1658 PaeTec Communications, Inc.
6478 1665 1615 AT&T Worldnet Services
18566 1807 1568 Covad Communications
4766 2436 1530 Korea Telecom (KIX)
7545 1561 1476 TPG Internet Pty Ltd
10620 1458 1303 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
11492 1262 1247 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
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
23502 UNALLOCATED 12.44.44.0/24 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
31.210.64.0/24 42926 RIPE Network Coordination Cen
31.210.65.0/24 42926 RIPE Network Coordination Cen
31.210.66.0/24 42926 RIPE Network Coordination Cen
31.210.67.0/24 42926 RIPE Network Coordination Cen
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 /12:222
/13:458 /14:790 /15:1387 /16:11695 /17:5768 /18:9689
/19:19253 /20:25614 /21:25712 /22:33975 /23:32722 /24:186126
/25:1097 /26:1271 /27:707 /28:158 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2248 3647 bellsouth.net, inc.
18566 1775 1807 Covad Communications
6478 1619 1665 AT&T Worldnet Services
10620 1348 1458 TVCABLE BOGOTA
4323 1305 2600 Time Warner Telecom
11492 1211 1262 Cable One
23456 1179 2370 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1054 1785 PaeTec Communications, Inc.
22773 846 1302 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:266 2:58 4:14 5:1 6:3 8:353
12:1988 13:1 14:450 15:15 16:3 17:8
20:10 23:6 24:1621 27:728 31:302 32:60
33:3 34:2 37:1 38:766 40:101 41:2484
42:4 44:3 46:904 47:4 49:171 50:387
52:13 55:5 56:2 57:30 58:843 59:481
60:387 61:1267 62:991 63:1928 64:3944 65:2319
66:4363 67:1869 68:1079 69:2971 70:700 71:346
72:1892 73:1 74:2361 75:301 76:338 77:838
78:688 79:455 80:1096 81:816 82:494 83:446
84:643 85:1075 86:567 87:748 88:323 89:1595
90:183 91:3728 92:510 93:1060 94:1267 95:794
96:482 97:255 98:837 99:35 101:73 103:9
106:1 107:8 108:83 109:951 110:567 111:705
112:319 113:402 114:525 115:685 116:948 117:676
118:816 119:1139 120:306 121:672 122:1618 123:1080
124:1255 125:1220 128:259 129:163 130:165 131:566
132:110 133:19 134:217 135:49 136:214 137:142
138:302 139:106 140:479 141:239 142:400 143:401
144:488 145:52 146:440 147:208 148:595 149:243
150:171 151:187 152:310 153:179 154:3 155:396
156:190 157:353 158:132 159:384 160:314 161:207
162:279 163:164 164:493 165:348 166:511 167:427
168:718 169:153 170:789 171:76 172:1 173:1539
174:539 175:371 177:112 178:863 180:816 181:19
182:434 183:206 184:259 185:1 186:1150 187:804
188:847 189:942 190:4859 192:5797 193:4848 194:3475
195:2964 196:1205 197:16 198:3565 199:3914 200:5524
201:1512 202:8351 203:8440 204:4132 205:2325 206:2753
207:3041 208:3951 209:3483 210:2731 211:1385 212:1977
213:1725 214:737 215:68 216:4898 217:1653 218:565
219:374 220:1203 221:484 222:342 223:144
End of report
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