Routing Table Report 04:00 +10GMT Fri 25 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351445
Prefixes after maximum aggregation: 159448
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173463
Total ASes present in the Internet Routing Table: 37072
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31161
Origin ASes announcing only one prefix: 14988
Transit ASes present in the Internet Routing Table: 4988
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 439
Unregistered ASNs in the Routing Table: 212
Number of 32-bit ASNs allocated by the RIRs: 1228
Number of 32-bit ASNs visible in the Routing Table: 923
Prefixes from 32-bit ASNs in the Routing Table: 1985
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 4876
Number of addresses announced to Internet: 2390379328
Equivalent to 142 /8s, 122 /16s and 75 /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: 87.8
Total number of prefixes smaller than registry allocations: 145414
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87731
Total APNIC prefixes after maximum aggregation: 29873
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 79932
Unique aggregates announced from the APNIC address blocks: 35257
APNIC Region origin ASes present in the Internet Routing Table: 4368
APNIC Prefixes per ASN: 18.30
APNIC Region origin ASes announcing only one prefix: 1215
APNIC Region transit ASes present in the Internet Routing Table: 692
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 542426944
Equivalent to 32 /8s, 84 /16s and 199 /24s
Percentage of available APNIC address space announced: 68.8
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: 138580
Total ARIN prefixes after maximum aggregation: 70785
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111035
Unique aggregates announced from the ARIN address blocks: 44862
ARIN Region origin ASes present in the Internet Routing Table: 14283
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5438
ARIN Region transit ASes present in the Internet Routing Table: 1471
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: 10
Number of ARIN addresses announced to Internet: 797100032
Equivalent to 47 /8s, 130 /16s and 200 /24s
Percentage of available ARIN address space announced: 63.3
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: 82923
Total RIPE prefixes after maximum aggregation: 47340
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76275
Unique aggregates announced from the RIPE address blocks: 50081
RIPE Region origin ASes present in the Internet Routing Table: 15440
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7774
RIPE Region transit ASes present in the Internet Routing Table: 2409
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 682
Number of RIPE addresses announced to Internet: 465014272
Equivalent to 27 /8s, 183 /16s and 142 /24s
Percentage of available RIPE address space announced: 74.9
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: 32452
Total LACNIC prefixes after maximum aggregation: 7365
LACNIC Deaggregation factor: 4.41
Prefixes being announced from the LACNIC address blocks: 31359
Unique aggregates announced from the LACNIC address blocks: 16239
LACNIC Region origin ASes present in the Internet Routing Table: 1435
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 180
Number of LACNIC addresses announced to Internet: 81430400
Equivalent to 4 /8s, 218 /16s and 135 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7566
Total AfriNIC prefixes after maximum aggregation: 1805
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5946
Unique aggregates announced from the AfriNIC address blocks: 1806
AfriNIC Region origin ASes present in the Internet Routing Table: 438
AfriNIC Prefixes per ASN: 13.58
AfriNIC Region origin ASes announcing only one prefix: 130
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 5.3
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: 22670592
Equivalent to 1 /8s, 89 /16s and 237 /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 2410 9509 897 Korea Telecom (KIX)
7545 1553 301 83 TPG Internet Pty Ltd
4755 1485 653 161 TATA Communications formerly
17974 1451 480 34 PT TELEKOMUNIKASI INDONESIA
24560 1130 321 203 Bharti Airtel Ltd., Telemedia
9583 1053 77 495 Sify Limited
4808 1024 2094 293 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
18101 938 116 142 Reliance Infocom Ltd Internet
17488 935 162 98 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 3675 3838 257 bellsouth.net, inc.
4323 2567 1093 402 Time Warner Telecom
1785 1791 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1566 302 34 AT&T Worldnet Services
20115 1530 1540 650 Charter Communications
19262 1487 4935 303 Verizon Global Networks
7018 1354 6674 884 AT&T WorldNet Services
11492 1323 240 15 Cable One
22773 1287 2865 80 Cox Communications, Inc.
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 318 UPC Distribution Services
3292 454 2013 391 TDC Tele Danmark
34984 454 95 205 BILISIM TELEKOM
8866 443 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Data Network Ad
20940 412 99 316 Akamai Technologies European
3320 409 7604 356 Deutsche Telekom AG
8551 402 353 46 Bezeq International
12479 397 577 6 Uni2 Autonomous System
702 393 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 1393 260 159 TVCABLE BOGOTA
8151 1364 2674 370 UniNet S.A. de C.V.
28573 1251 970 83 NET Servicos de Comunicao S.A
6503 1218 354 73 AVANTEL, S.A.
7303 901 464 137 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 558 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
13489 491 213 109 Orbitel S.A. E.S.P.
11172 487 83 80 Servicios Alestra S.A de C.V
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 771 147 39 LINKdotNET AS number
15475 421 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 213 199 11 Itissalat Al-MAGHRIB
29571 192 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 3675 3838 257 bellsouth.net, inc.
4323 2567 1093 402 Time Warner Telecom
4766 2410 9509 897 Korea Telecom (KIX)
23456 1985 488 1091 32-bit ASN transition
1785 1791 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1566 302 34 AT&T Worldnet Services
7545 1553 301 83 TPG Internet Pty Ltd
20115 1530 1540 650 Charter Communications
19262 1487 4935 303 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 2567 2165 Time Warner Telecom
1785 1791 1660 PaeTec Communications, Inc.
6478 1566 1532 AT&T Worldnet Services
4766 2410 1513 Korea Telecom (KIX)
7545 1553 1470 TPG Internet Pty Ltd
17974 1451 1417 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1485 1324 TATA Communications formerly
11492 1323 1308 Cable One
10620 1393 1234 TVCABLE BOGOTA
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
24.142.192.0/18 11426 ServiceCo LLC - Road Runner
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
31.47.232.0/21 34549 Laxin IT-Services GmbH & Co.
31.186.32.0/21 48142 Permanet Ltd
41.57.192.0/18 22750 BCSNET
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 /9:11 /10:26 /11:74 /12:218
/13:448 /14:766 /15:1372 /16:11576 /17:5700 /18:9421
/19:19074 /20:24727 /21:25219 /22:33657 /23:32147 /24:183701
/25:1123 /26:1279 /27:707 /28:163 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2269 3675 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1520 1566 AT&T Worldnet Services
4323 1377 2567 Time Warner Telecom
10620 1284 1393 TVCABLE BOGOTA
11492 1271 1323 Cable One
23456 1077 1985 32-bit ASN transition
7011 1063 1164 Citizens Utilities
1785 1056 1791 PaeTec Communications, Inc.
6503 994 1218 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:289 2:52 4:14 5:1 8:347 12:2024
13:1 14:428 15:15 16:3 17:8 20:9
23:3 24:1568 27:689 31:6 32:60 33:3
34:2 37:1 38:749 39:1 40:101 41:2319
44:3 46:750 47:4 49:146 50:114 52:13
55:4 56:2 57:32 58:818 59:496 60:386
61:1164 62:1001 63:1918 64:3875 65:2357 66:4375
67:1800 68:1077 69:2899 70:702 71:359 72:1897
73:1 74:2324 75:284 76:337 77:842 78:696
79:464 80:1089 81:823 82:512 83:461 84:647
85:1028 86:553 87:759 88:342 89:1564 90:175
91:3646 92:504 93:1044 94:1230 95:784 96:452
97:252 98:808 99:34 101:49 106:1 107:4
108:79 109:925 110:517 111:703 112:323 113:411
114:509 115:718 116:972 117:673 118:733 119:1102
120:277 121:766 122:1620 123:1057 124:1323 125:1253
128:234 129:171 130:171 131:565 132:108 133:20
134:216 135:49 136:212 137:142 138:299 139:112
140:485 141:173 142:379 143:391 144:475 145:52
146:440 147:192 148:625 149:275 150:165 151:187
152:298 153:180 154:3 155:388 156:184 157:346
158:131 159:369 160:313 161:207 162:278 163:164
164:493 165:350 166:499 167:413 168:721 169:156
170:772 171:70 172:2 173:1254 174:521 175:348
177:60 178:795 180:793 181:4 182:404 183:240
184:229 185:1 186:1101 187:880 188:918 189:1040
190:4750 192:5762 193:4789 194:3486 195:2946 196:1208
197:15 198:3588 199:3880 200:5580 201:1581 202:8399
203:8471 204:4118 205:2314 206:2648 207:3024 208:3905
209:3496 210:2731 211:1362 212:1951 213:1711 214:755
215:66 216:4882 217:1636 218:556 219:382 220:1198
221:478 222:315 223:100
End of report
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