Routing Table Report 04:00 +10GMT Tue 22 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350529
Prefixes after maximum aggregation: 159123
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173396
Total ASes present in the Internet Routing Table: 36101
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 31122
Origin ASes announcing only one prefix: 14979
Transit ASes present in the Internet Routing Table: 4979
Transit-only ASes present in the Internet Routing Table: 125
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: 423
Unregistered ASNs in the Routing Table: 202
Number of 32-bit ASNs allocated by the RIRs: 1213
Prefixes from 32-bit ASNs in the Routing Table: 1954
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 193
Number of addresses announced to Internet: 2389080128
Equivalent to 142 /8s, 102 /16s and 120 /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: 145004
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87520
Total APNIC prefixes after maximum aggregation: 29795
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84405
Unique aggregates announced from the APNIC address blocks: 36632
APNIC Region origin ASes present in the Internet Routing Table: 4361
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1212
APNIC Region transit ASes present in the Internet Routing Table: 687
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 599932224
Equivalent to 35 /8s, 194 /16s and 61 /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: 138417
Total ARIN prefixes after maximum aggregation: 70770
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110854
Unique aggregates announced from the ARIN address blocks: 45110
ARIN Region origin ASes present in the Internet Routing Table: 14267
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5427
ARIN Region transit ASes present in the Internet Routing Table: 1473
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 797043712
Equivalent to 47 /8s, 129 /16s and 236 /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: 82762
Total RIPE prefixes after maximum aggregation: 47167
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76110
Unique aggregates announced from the RIPE address blocks: 49858
RIPE Region origin ASes present in the Internet Routing Table: 15422
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7780
RIPE Region transit ASes present in the Internet Routing Table: 2412
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 464930560
Equivalent to 27 /8s, 182 /16s and 71 /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: 32181
Total LACNIC prefixes after maximum aggregation: 7344
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31094
Unique aggregates announced from the LACNIC address blocks: 16160
LACNIC Region origin ASes present in the Internet Routing Table: 1434
LACNIC Prefixes per ASN: 21.68
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 81469824
Equivalent to 4 /8s, 219 /16s and 33 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7488
Total AfriNIC prefixes after maximum aggregation: 1808
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5895
Unique aggregates announced from the AfriNIC address blocks: 1811
AfriNIC Region origin ASes present in the Internet Routing Table: 437
AfriNIC Prefixes per ASN: 13.49
AfriNIC Region origin ASes announcing only one prefix: 128
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 22140928
Equivalent to 1 /8s, 81 /16s and 216 /24s
Percentage of available AfriNIC address space announced: 33.0
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 2426 9508 896 Korea Telecom (KIX)
7545 1571 301 84 TPG Internet Pty Ltd
4755 1478 653 159 TATA Communications formerly
17974 1445 480 34 PT TELEKOMUNIKASI INDONESIA
24560 1134 324 187 Bharti Airtel Ltd., Telemedia
9583 1053 77 491 Sify Limited
4808 1001 2084 283 CNCGROUP IP network: China169
9829 1000 868 53 BSNL National Internet Backbo
18101 938 116 142 Reliance Infocom Ltd Internet
17488 937 162 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 1792 681 131 PaeTec Communications, Inc.
18566 1607 331 195 Covad Communications
6478 1555 300 48 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1488 4939 299 Verizon Global Networks
7018 1365 6707 884 AT&T WorldNet Services
11492 1314 236 64 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
9198 472 267 15 Kazakhtelecom Data Network Ad
34984 455 95 205 BILISIM TELEKOM
3292 453 2013 391 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
20940 414 99 317 Akamai Technologies European
3320 406 7604 354 Deutsche Telekom AG
8551 403 353 46 Bezeq International
8402 396 320 11 Corbina telecom
12479 396 577 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 1245 965 82 NET Servicos de Comunicao S.A
8151 1237 2695 374 UniNet S.A. de C.V.
6503 1175 354 73 AVANTEL, S.A.
7303 923 465 147 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 544 310 15 VTR PUNTO NET S.A.
3816 514 225 97 Empresa Nacional de Telecomun
13489 491 213 106 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 799 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 297 271 14 Etisalat MISR
3741 266 987 228 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 207 199 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 2426 9508 896 Korea Telecom (KIX)
23456 1954 478 1071 32-bit ASN transition
1785 1792 681 131 PaeTec Communications, Inc.
18566 1607 331 195 Covad Communications
7545 1571 301 84 TPG Internet Pty Ltd
6478 1555 300 48 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1488 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 2569 2167 Time Warner Telecom
1785 1792 1661 PaeTec Communications, Inc.
4766 2426 1530 Korea Telecom (KIX)
6478 1555 1507 AT&T Worldnet Services
7545 1571 1487 TPG Internet Pty Ltd
18566 1607 1412 Covad Communications
17974 1445 1411 PT TELEKOMUNIKASI INDONESIA
4755 1478 1319 TATA Communications formerly
11492 1314 1250 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
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
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 /8:19 /9:11 /10:26 /11:74 /12:217
/13:447 /14:767 /15:1371 /16:11570 /17:5690 /18:9397
/19:19045 /20:24717 /21:25172 /22:33576 /23:32066 /24:183204
/25:1118 /26:1283 /27:703 /28:39 /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 1586 1607 Covad Communications
6478 1509 1555 AT&T Worldnet Services
4323 1380 2569 Time Warner Telecom
10620 1285 1394 TVCABLE BOGOTA
11492 1271 1314 Cable One
23456 1074 1954 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1057 1792 PaeTec Communications, Inc.
6503 955 1175 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:275 2:59 4:14 5:1 8:343 12:2024
13:1 14:425 15:15 16:3 17:8 20:9
23:3 24:1562 27:684 31:5 32:60 33:3
34:2 37:1 38:747 39:1 40:101 41:2279
44:3 46:720 47:4 49:162 50:110 52:13
55:3 56:2 57:32 58:871 59:493 60:386
61:1162 62:1000 63:1922 64:3870 65:2355 66:4372
67:1780 68:1078 69:2891 70:699 71:359 72:1899
73:1 74:2325 75:284 76:344 77:845 78:700
79:455 80:1080 81:809 82:512 83:462 84:646
85:1028 86:526 87:756 88:353 89:1547 90:174
91:3637 92:509 93:1043 94:1229 95:785 96:448
97:252 98:803 99:34 101:49 106:1 107:4
108:72 109:915 110:520 111:704 112:319 113:378
114:505 115:714 116:962 117:675 118:723 119:1089
120:257 121:767 122:1611 123:1043 124:1315 125:1248
128:265 129:171 130:172 131:561 132:100 133:20
134:215 135:49 136:211 137:146 138:299 139:113
140:484 141:173 142:377 143:390 144:478 145:52
146:436 147:192 148:613 149:275 150:161 151:187
152:298 153:180 154:3 155:388 156:184 157:347
158:132 159:372 160:313 161:209 162:277 163:165
164:491 165:351 166:499 167:412 168:721 169:156
170:784 171:69 172:2 173:1255 174:521 175:333
177:44 178:811 180:790 181:4 182:400 183:240
184:227 185:1 186:1065 187:872 188:914 189:1028
190:4751 192:5767 193:4791 194:3493 195:2944 196:1187
197:15 198:3569 199:3882 200:5536 201:1584 202:8380
203:8469 204:4111 205:2315 206:2649 207:3025 208:3905
209:3488 210:2695 211:1352 212:1953 213:1711 214:750
215:66 216:4876 217:1648 218:554 219:381 220:1197
221:472 222:321 223:100
End of report
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