Routing Table Report 04:00 +10GMT Mon 21 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 349720
Prefixes after maximum aggregation: 158879
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173058
Total ASes present in the Internet Routing Table: 36067
Prefixes per ASN: 9.70
Origin-only ASes present in the Internet Routing Table: 31110
Origin ASes announcing only one prefix: 14962
Transit ASes present in the Internet Routing Table: 4957
Transit-only ASes present in the Internet Routing Table: 126
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: 420
Unregistered ASNs in the Routing Table: 198
Number of 32-bit ASNs allocated by the RIRs: 1213
Prefixes from 32-bit ASNs in the Routing Table: 1943
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 193
Number of addresses announced to Internet: 2386968896
Equivalent to 142 /8s, 70 /16s and 65 /24s
Percentage of available address space announced: 64.4
Percentage of allocated address space announced: 64.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.5
Total number of prefixes smaller than registry allocations: 144651
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87442
Total APNIC prefixes after maximum aggregation: 29732
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84316
Unique aggregates announced from the APNIC address blocks: 36470
APNIC Region origin ASes present in the Internet Routing Table: 4355
APNIC Prefixes per ASN: 19.36
APNIC Region origin ASes announcing only one prefix: 1207
APNIC Region transit ASes present in the Internet Routing Table: 683
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 599363136
Equivalent to 35 /8s, 185 /16s and 142 /24s
Percentage of available APNIC address space announced: 76.0
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: 138286
Total ARIN prefixes after maximum aggregation: 70773
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110739
Unique aggregates announced from the ARIN address blocks: 45091
ARIN Region origin ASes present in the Internet Routing Table: 14268
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5428
ARIN Region transit ASes present in the Internet Routing Table: 1474
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 797022464
Equivalent to 47 /8s, 129 /16s and 153 /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: 82619
Total RIPE prefixes after maximum aggregation: 47091
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76057
Unique aggregates announced from the RIPE address blocks: 49844
RIPE Region origin ASes present in the Internet Routing Table: 15413
RIPE Prefixes per ASN: 4.93
RIPE Region origin ASes announcing only one prefix: 7772
RIPE Region transit ASes present in the Internet Routing Table: 2405
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 464776704
Equivalent to 27 /8s, 179 /16s and 238 /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: 32155
Total LACNIC prefixes after maximum aggregation: 7349
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31063
Unique aggregates announced from the LACNIC address blocks: 16146
LACNIC Region origin ASes present in the Internet Routing Table: 1432
LACNIC Prefixes per ASN: 21.69
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: 18
Number of LACNIC addresses announced to Internet: 81464704
Equivalent to 4 /8s, 219 /16s and 13 /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: 7065
Total AfriNIC prefixes after maximum aggregation: 1704
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 5543
Unique aggregates announced from the AfriNIC address blocks: 1781
AfriNIC Region origin ASes present in the Internet Routing Table: 417
AfriNIC Prefixes per ASN: 13.29
AfriNIC Region origin ASes announcing only one prefix: 124
AfriNIC Region transit ASes present in the Internet Routing Table: 84
Average AfriNIC Region AS path length visible: 5.3
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 21900288
Equivalent to 1 /8s, 78 /16s and 44 /24s
Percentage of available AfriNIC address space announced: 32.6
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 1569 301 84 TPG Internet Pty Ltd
4755 1476 653 158 TATA Communications formerly
17974 1433 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1134 324 187 Bharti Airtel Ltd., Telemedia
9583 1048 77 490 Sify Limited
9829 1002 868 53 BSNL National Internet Backbo
4808 1001 2084 283 CNCGROUP IP network: China169
18101 939 117 143 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 3673 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 1553 300 65 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1489 4939 300 Verizon Global Networks
7018 1368 6707 887 AT&T WorldNet Services
11492 1315 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 95 203 BILISIM TELEKOM
3292 453 2013 391 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
20940 411 98 314 Akamai Technologies European
3320 406 7604 354 Deutsche Telekom AG
8551 403 353 46 Bezeq International
8402 401 320 11 Corbina telecom
12479 395 577 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 1174 354 73 AVANTEL, S.A.
7303 923 465 146 Telecom Argentina Stet-France
14420 636 52 91 CORPORACION NACIONAL DE TELEC
22047 543 310 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 789 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 296 271 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 3673 3838 257 bellsouth.net, inc.
4323 2569 1093 402 Time Warner Telecom
4766 2426 9508 896 Korea Telecom (KIX)
23456 1943 476 1065 32-bit ASN transition
1785 1792 681 131 PaeTec Communications, Inc.
18566 1607 331 195 Covad Communications
7545 1569 301 84 TPG Internet Pty Ltd
6478 1553 300 65 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1489 4939 300 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 1553 1488 AT&T Worldnet Services
7545 1569 1485 TPG Internet Pty Ltd
18566 1607 1412 Covad Communications
17974 1433 1400 PT TELEKOMUNIKASI INDONESIA
4755 1476 1318 TATA Communications formerly
11492 1315 1251 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 /16:11545 /17:5680 /18:9379
/19:19007 /20:24673 /21:25114 /22:33551 /23:32001 /24:182649
/25:1128 /26:1295 /27:710 /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 3673 bellsouth.net, inc.
18566 1586 1607 Covad Communications
6478 1507 1553 AT&T Worldnet Services
4323 1380 2569 Time Warner Telecom
10620 1285 1394 TVCABLE BOGOTA
11492 1272 1315 Cable One
23456 1070 1943 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1057 1792 PaeTec Communications, Inc.
6503 954 1174 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:272 2:64 4:14 5:1 8:343 12:2004
13:1 14:422 15:15 16:3 17:8 20:9
23:3 24:1559 27:683 31:3 32:60 33:3
34:2 37:1 38:715 39:1 40:101 41:2028
44:3 46:732 47:4 49:162 50:110 52:13
55:3 56:2 57:32 58:865 59:492 60:387
61:1147 62:994 63:1922 64:3870 65:2350 66:4370
67:1773 68:1077 69:2903 70:700 71:359 72:1935
73:1 74:2326 75:284 76:344 77:840 78:699
79:455 80:1090 81:819 82:515 83:463 84:645
85:1033 86:517 87:757 88:353 89:1556 90:174
91:3640 92:504 93:1040 94:1227 95:781 96:448
97:251 98:800 99:34 101:49 106:1 107:4
108:72 109:911 110:518 111:701 112:319 113:377
114:505 115:712 116:962 117:673 118:723 119:1083
120:257 121:766 122:1611 123:1042 124:1299 125:1250
128:265 129:171 130:172 131:560 132:100 133:20
134:215 135:49 136:212 137:146 138:299 139:113
140:485 141:173 142:377 143:386 144:477 145:52
146:436 147:192 148:612 149:265 150:161 151:187
152:297 153:180 154:3 155:387 156:184 157:347
158:131 159:372 160:313 161:209 162:277 163:164
164:490 165:351 166:498 167:412 168:720 169:156
170:783 171:69 172:2 173:1253 174:521 175:334
177:44 178:809 180:789 181:4 182:400 183:241
184:227 185:1 186:1058 187:872 188:912 189:1030
190:4751 192:5750 193:4794 194:3494 195:2943 196:1118
197:14 198:3555 199:3874 200:5520 201:1577 202:8383
203:8474 204:4107 205:2308 206:2649 207:3026 208:3905
209:3488 210:2688 211:1351 212:1942 213:1702 214:752
215:66 216:4840 217:1637 218:554 219:381 220:1197
221:472 222:321 223:100
End of report
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