Routing Table Report 04:00 +10GMT Tue 03 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356187
Prefixes after maximum aggregation: 161109
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175821
Total ASes present in the Internet Routing Table: 37435
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31333
Origin ASes announcing only one prefix: 15070
Transit ASes present in the Internet Routing Table: 5074
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 579
Unregistered ASNs in the Routing Table: 290
Number of 32-bit ASNs allocated by the RIRs: 1321
Number of 32-bit ASNs visible in the Routing Table: 1028
Prefixes from 32-bit ASNs in the Routing Table: 2300
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 146
Number of addresses announced to Internet: 2421043648
Equivalent to 144 /8s, 78 /16s and 49 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
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: 147966
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89074
Total APNIC prefixes after maximum aggregation: 29925
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85517
Unique aggregates announced from the APNIC address blocks: 36918
APNIC Region origin ASes present in the Internet Routing Table: 4428
APNIC Prefixes per ASN: 19.31
APNIC Region origin ASes announcing only one prefix: 1231
APNIC Region transit ASes present in the Internet Routing Table: 706
Average APNIC Region AS path length visible: 4.5
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: 611502368
Equivalent to 36 /8s, 114 /16s and 201 /24s
Percentage of available APNIC address space announced: 77.5
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: 140222
Total ARIN prefixes after maximum aggregation: 71286
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112541
Unique aggregates announced from the ARIN address blocks: 45255
ARIN Region origin ASes present in the Internet Routing Table: 14345
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5477
ARIN Region transit ASes present in the Internet Routing Table: 1494
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 799768320
Equivalent to 47 /8s, 171 /16s and 127 /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: 84075
Total RIPE prefixes after maximum aggregation: 47950
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77255
Unique aggregates announced from the RIPE address blocks: 51102
RIPE Region origin ASes present in the Internet Routing Table: 15548
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7798
RIPE Region transit ASes present in the Internet Routing Table: 2448
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: 764
Number of RIPE addresses announced to Internet: 467581952
Equivalent to 27 /8s, 222 /16s and 188 /24s
Percentage of available RIPE address space announced: 75.3
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: 32560
Total LACNIC prefixes after maximum aggregation: 7473
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31575
Unique aggregates announced from the LACNIC address blocks: 16550
LACNIC Region origin ASes present in the Internet Routing Table: 1444
LACNIC Prefixes per ASN: 21.87
LACNIC Region origin ASes announcing only one prefix: 427
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: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 200
Number of LACNIC addresses announced to Internet: 82986752
Equivalent to 4 /8s, 242 /16s and 71 /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: 7735
Total AfriNIC prefixes after maximum aggregation: 1849
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6100
Unique aggregates announced from the AfriNIC address blocks: 1910
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.62
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.7
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: 23373312
Equivalent to 1 /8s, 100 /16s and 166 /24s
Percentage of available AfriNIC address space announced: 34.8
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 2436 9490 906 Korea Telecom (KIX)
17974 1814 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 82 TPG Internet Pty Ltd
4755 1459 634 167 TATA Communications formerly
7552 1210 1064 7 Vietel Corporation
24560 1152 336 184 Bharti Airtel Ltd., Telemedia
9583 1056 77 492 Sify Limited
4808 1034 2090 294 CNCGROUP IP network: China169
9829 1000 872 54 BSNL National Internet Backbo
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 2606 1086 397 Time Warner Telecom
18566 1790 349 229 Covad Communications
1785 1785 681 127 PaeTec Communications, Inc.
6478 1658 311 46 AT&T Worldnet Services
20115 1536 1552 639 Charter Communications
19262 1481 4920 328 Verizon Global Networks
7018 1356 6911 889 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1266 536 909 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 508 106 185 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 442 129 338 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 409 577 6 Uni2 Autonomous System
8551 406 355 45 Bezeq International
702 396 1802 309 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 1448 268 160 TVCABLE BOGOTA
28573 1286 988 87 NET Servicos de Comunicao S.A
8151 1250 2690 368 UniNet S.A. de C.V.
7303 929 467 149 Telecom Argentina Stet-France
6503 852 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 564 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 489 99 82 Servicios Alestra S.A de C.V
13489 485 229 116 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 884 445 11 TEDATA
24863 780 147 37 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 222 12 9 Starcomms Nigeria Limited
24835 207 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 2606 1086 397 Time Warner Telecom
4766 2436 9490 906 Korea Telecom (KIX)
23456 2300 660 1265 32-bit ASN transition
17974 1814 515 29 PT TELEKOMUNIKASI INDONESIA
18566 1790 349 229 Covad Communications
1785 1785 681 127 PaeTec Communications, Inc.
6478 1658 311 46 AT&T Worldnet Services
7545 1556 301 82 TPG Internet Pty Ltd
20115 1536 1552 639 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 2606 2209 Time Warner Telecom
17974 1814 1785 PT TELEKOMUNIKASI INDONESIA
1785 1785 1658 PaeTec Communications, Inc.
6478 1658 1612 AT&T Worldnet Services
18566 1790 1561 Covad Communications
4766 2436 1530 Korea Telecom (KIX)
7545 1556 1474 TPG Internet Pty Ltd
4755 1459 1292 TATA Communications formerly
10620 1448 1288 TVCABLE BOGOTA
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
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
31.208.0.0/16 29518 Labs2
31.209.0.0/18 29518 Labs2
31.209.80.0/20 50629 LWLcom GmbH
41.222.79.0/24 36938 >>UNKNOWN<<
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 /12:221
/13:459 /14:790 /15:1386 /16:11673 /17:5761 /18:9649
/19:19200 /20:25606 /21:25662 /22:33871 /23:32733 /24:185912
/25:1095 /26:1271 /27:706 /28:39 /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 1758 1790 Covad Communications
6478 1612 1658 AT&T Worldnet Services
10620 1338 1448 TVCABLE BOGOTA
4323 1311 2606 Time Warner Telecom
11492 1211 1262 Cable One
23456 1158 2300 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1054 1785 PaeTec Communications, Inc.
22773 844 1300 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:265 2:51 4:14 5:1 6:3 8:351
12:1987 13:1 14:446 15:15 16:3 17:8
20:10 23:5 24:1619 27:727 31:235 32:60
33:3 34:2 37:1 38:766 40:101 41:2437
42:5 44:3 46:885 47:4 49:170 50:376
52:13 55:5 56:2 57:30 58:843 59:483
60:387 61:1265 62:1000 63:1929 64:3948 65:2320
66:4356 67:1867 68:1081 69:2966 70:698 71:346
72:1891 73:1 74:2358 75:299 76:337 77:836
78:691 79:455 80:1099 81:815 82:480 83:447
84:648 85:1077 86:564 87:751 88:322 89:1593
90:183 91:3715 92:512 93:1058 94:1265 95:798
96:478 97:255 98:827 99:35 101:69 103:5
106:1 107:6 108:83 109:944 110:560 111:706
112:320 113:398 114:523 115:685 116:955 117:681
118:812 119:1136 120:306 121:673 122:1618 123:1076
124:1256 125:1221 128:261 129:163 130:172 131:563
132:110 133:19 134:217 135:49 136:214 137:142
138:302 139:106 140:482 141:239 142:400 143:402
144:488 145:52 146:441 147:206 148:593 149:243
150:171 151:187 152:309 153:179 154:3 155:395
156:190 157:353 158:132 159:382 160:314 161:212
162:277 163:164 164:494 165:335 166:511 167:428
168:726 169:153 170:791 171:76 172:1 173:1535
174:537 175:361 177:83 178:855 180:818 181:16
182:435 183:204 184:256 185:1 186:1152 187:812
188:980 189:967 190:4847 192:5790 193:4845 194:3474
195:2964 196:1203 197:16 198:3565 199:3919 200:5517
201:1506 202:8344 203:8436 204:4141 205:2321 206:2751
207:3030 208:3956 209:3482 210:2732 211:1387 212:1978
213:1700 214:729 215:67 216:4886 217:1643 218:562
219:374 220:1201 221:484 222:342 223:144
End of report
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