Routing Table Report 04:00 +10GMT Thu 24 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350763
Prefixes after maximum aggregation: 159237
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173243
Total ASes present in the Internet Routing Table: 37054
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31154
Origin ASes announcing only one prefix: 14986
Transit ASes present in the Internet Routing Table: 4979
Transit-only ASes present in the Internet Routing Table: 124
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: 437
Unregistered ASNs in the Routing Table: 209
Number of 32-bit ASNs allocated by the RIRs: 1219
Number of 32-bit ASNs visible in the Routing Table: 921
Prefixes from 32-bit ASNs in the Routing Table: 1986
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 198
Number of addresses announced to Internet: 2389824064
Equivalent to 142 /8s, 113 /16s and 210 /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: 89.6
Total number of prefixes smaller than registry allocations: 145110
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87578
Total APNIC prefixes after maximum aggregation: 29799
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84456
Unique aggregates announced from the APNIC address blocks: 36527
APNIC Region origin ASes present in the Internet Routing Table: 4363
APNIC Prefixes per ASN: 19.36
APNIC Region origin ASes announcing only one prefix: 1212
APNIC Region transit ASes present in the Internet Routing Table: 689
Average APNIC Region AS path length visible: 4.4
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: 600150592
Equivalent to 35 /8s, 197 /16s and 146 /24s
Percentage of available APNIC address space announced: 76.1
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: 138556
Total ARIN prefixes after maximum aggregation: 70756
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110993
Unique aggregates announced from the ARIN address blocks: 44837
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: 1472
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: 797097728
Equivalent to 47 /8s, 130 /16s and 191 /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: 82671
Total RIPE prefixes after maximum aggregation: 47260
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76041
Unique aggregates announced from the RIPE address blocks: 49989
RIPE Region origin ASes present in the Internet Routing Table: 15436
RIPE Prefixes per ASN: 4.93
RIPE Region origin ASes announcing only one prefix: 7775
RIPE Region transit ASes present in the Internet Routing Table: 2406
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: 681
Number of RIPE addresses announced to Internet: 464768256
Equivalent to 27 /8s, 179 /16s and 205 /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: 32258
Total LACNIC prefixes after maximum aggregation: 7343
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 31180
Unique aggregates announced from the LACNIC address blocks: 16239
LACNIC Region origin ASes present in the Internet Routing Table: 1433
LACNIC Prefixes per ASN: 21.76
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: 4.4
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: 81406336
Equivalent to 4 /8s, 218 /16s and 41 /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: 7506
Total AfriNIC prefixes after maximum aggregation: 1805
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 5897
Unique aggregates announced from the AfriNIC address blocks: 1812
AfriNIC Region origin ASes present in the Internet Routing Table: 438
AfriNIC Prefixes per ASN: 13.46
AfriNIC Region origin ASes announcing only one prefix: 129
AfriNIC Region transit ASes present in the Internet Routing Table: 93
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: 4
Number of AfriNIC addresses announced to Internet: 22666240
Equivalent to 1 /8s, 89 /16s and 220 /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 2425 9508 895 Korea Telecom (KIX)
7545 1557 301 84 TPG Internet Pty Ltd
4755 1483 653 159 TATA Communications formerly
17974 1448 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1130 321 203 Bharti Airtel Ltd., Telemedia
9583 1045 76 495 Sify Limited
4808 1010 2089 289 CNCGROUP IP network: China169
9829 1002 868 53 BSNL National Internet Backbo
18101 938 116 142 Reliance Infocom Ltd Internet
17488 936 162 96 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 3674 3838 257 bellsouth.net, inc.
4323 2569 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 1531 1540 646 Charter Communications
19262 1487 4935 303 Verizon Global Networks
7018 1360 6675 886 AT&T WorldNet Services
11492 1324 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
34984 454 95 205 BILISIM TELEKOM
3292 453 2013 390 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
20940 414 99 317 Akamai Technologies European
9198 412 267 15 Kazakhtelecom Data Network Ad
3320 409 7604 356 Deutsche Telekom AG
8551 403 353 46 Bezeq International
8402 402 320 11 Corbina telecom
12479 397 577 6 Uni2 Autonomous System
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 1394 260 159 TVCABLE BOGOTA
28573 1249 969 83 NET Servicos de Comunicao S.A
8151 1235 2669 371 UniNet S.A. de C.V.
6503 1178 354 73 AVANTEL, S.A.
7303 924 465 147 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 548 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
13489 492 213 104 Orbitel S.A. E.S.P.
11172 487 99 81 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 800 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 295 271 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 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 3674 3838 257 bellsouth.net, inc.
4323 2569 1093 402 Time Warner Telecom
4766 2425 9508 895 Korea Telecom (KIX)
23456 1986 487 1088 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 1557 301 84 TPG Internet Pty Ltd
20115 1531 1540 646 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 2569 2167 Time Warner Telecom
1785 1791 1660 PaeTec Communications, Inc.
6478 1566 1532 AT&T Worldnet Services
4766 2425 1530 Korea Telecom (KIX)
7545 1557 1473 TPG Internet Pty Ltd
17974 1448 1415 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1483 1324 TATA Communications formerly
11492 1324 1309 Cable One
10620 1394 1235 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
24.225.128.0/18 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
31.47.96.0/20 8251 Cistron IP BV
31.47.112.0/20 16285 UMN Autonomous System
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 /12:217
/13:448 /14:766 /15:1370 /16:11572 /17:5695 /18:9406
/19:19051 /20:24696 /21:25178 /22:33588 /23:32084 /24:183393
/25:1122 /26:1286 /27:706 /28:38 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3674 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1520 1566 AT&T Worldnet Services
4323 1379 2569 Time Warner Telecom
10620 1285 1394 TVCABLE BOGOTA
11492 1272 1324 Cable One
23456 1078 1986 32-bit ASN transition
7011 1063 1164 Citizens Utilities
1785 1056 1791 PaeTec Communications, Inc.
6503 957 1178 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:286 2:59 4:14 5:1 8:344 12:2026
13:1 14:428 15:15 16:3 17:8 20:9
23:3 24:1569 27:688 31:6 32:60 33:3
34:2 37:1 38:749 39:1 40:101 41:2282
44:3 46:737 47:4 49:142 50:114 52:13
55:3 56:2 57:32 58:816 59:496 60:386
61:1162 62:974 63:1922 64:3872 65:2354 66:4361
67:1802 68:1078 69:2898 70:699 71:359 72:1890
73:1 74:2323 75:284 76:343 77:847 78:694
79:456 80:1091 81:824 82:513 83:460 84:645
85:1026 86:528 87:758 88:340 89:1560 90:175
91:3640 92:502 93:1043 94:1235 95:783 96:451
97:252 98:807 99:34 101:49 106:1 107:4
108:77 109:920 110:518 111:703 112:324 113:375
114:509 115:714 116:972 117:674 118:731 119:1089
120:278 121:766 122:1620 123:1055 124:1318 125:1246
128:264 129:172 130:173 131:564 132:100 133:20
134:214 135:49 136:212 137:146 138:298 139:113
140:484 141:173 142:379 143:389 144:480 145:52
146:440 147:193 148:615 149:275 150:163 151:187
152:298 153:180 154:3 155:388 156:184 157:347
158:130 159:372 160:313 161:207 162:278 163:165
164:493 165:350 166:499 167:414 168:715 169:156
170:778 171:70 172:2 173:1255 174:520 175:349
177:60 178:821 180:795 181:4 182:395 183:234
184:229 185:1 186:1101 187:877 188:918 189:1015
190:4745 192:5764 193:4787 194:3485 195:2928 196:1192
197:15 198:3567 199:3883 200:5573 201:1582 202:8390
203:8472 204:4118 205:2313 206:2647 207:3027 208:3905
209:3487 210:2718 211:1362 212:1949 213:1692 214:761
215:66 216:4880 217:1644 218:554 219:382 220:1199
221:478 222:322 223:99
End of report
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