Routing Table Report 04:00 +10GMT Fri 22 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355533
Prefixes after maximum aggregation: 160720
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175104
Total ASes present in the Internet Routing Table: 37358
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31308
Origin ASes announcing only one prefix: 15074
Transit ASes present in the Internet Routing Table: 5038
Transit-only ASes present in the Internet Routing Table: 131
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: 557
Unregistered ASNs in the Routing Table: 271
Number of 32-bit ASNs allocated by the RIRs: 1310
Number of 32-bit ASNs visible in the Routing Table: 1012
Prefixes from 32-bit ASNs in the Routing Table: 2270
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2417827136
Equivalent to 144 /8s, 29 /16s and 29 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147569
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88926
Total APNIC prefixes after maximum aggregation: 29954
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85424
Unique aggregates announced from the APNIC address blocks: 36862
APNIC Region origin ASes present in the Internet Routing Table: 4415
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1224
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 4.6
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: 610616864
Equivalent to 36 /8s, 101 /16s and 70 /24s
Percentage of available APNIC address space announced: 77.4
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: 140044
Total ARIN prefixes after maximum aggregation: 71100
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112422
Unique aggregates announced from the ARIN address blocks: 45130
ARIN Region origin ASes present in the Internet Routing Table: 14337
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5478
ARIN Region transit ASes present in the Internet Routing Table: 1491
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: 798608640
Equivalent to 47 /8s, 153 /16s and 205 /24s
Percentage of available ARIN address space announced: 63.5
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: 83971
Total RIPE prefixes after maximum aggregation: 47826
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77114
Unique aggregates announced from the RIPE address blocks: 50822
RIPE Region origin ASes present in the Internet Routing Table: 15529
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7807
RIPE Region transit ASes present in the Internet Routing Table: 2432
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: 749
Number of RIPE addresses announced to Internet: 466726144
Equivalent to 27 /8s, 209 /16s and 173 /24s
Percentage of available RIPE address space announced: 75.2
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: 32393
Total LACNIC prefixes after maximum aggregation: 7451
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31396
Unique aggregates announced from the LACNIC address blocks: 16418
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.80
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 260
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: 199
Number of LACNIC addresses announced to Internet: 82664320
Equivalent to 4 /8s, 237 /16s and 91 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7703
Total AfriNIC prefixes after maximum aggregation: 1826
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6087
Unique aggregates announced from the AfriNIC address blocks: 1883
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.83
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 4.8
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: 23308800
Equivalent to 1 /8s, 99 /16s and 170 /24s
Percentage of available AfriNIC address space announced: 34.7
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 2429 9482 904 Korea Telecom (KIX)
17974 1824 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1453 634 167 TATA Communications formerly
7552 1194 1064 7 Vietel Corporation
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1031 2105 293 CNCGROUP IP network: China169
9829 1007 870 50 BSNL National Internet Backbo
17488 942 164 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 3655 3822 255 bellsouth.net, inc.
4323 2649 1090 398 Time Warner Telecom
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1635 308 42 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1357 6801 886 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1269 536 910 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 518 1780 320 UPC Distribution Services
34984 508 106 182 BILISIM TELEKOM
29049 466 33 37 AzerSat LLC.
3292 455 1997 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 439 129 335 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 407 577 6 Uni2 Autonomous System
8551 405 354 47 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 1437 268 160 TVCABLE BOGOTA
28573 1282 988 87 NET Servicos de Comunicao S.A
8151 1250 2688 370 UniNet S.A. de C.V.
7303 927 467 149 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 488 99 82 Servicios Alestra S.A de C.V
27947 482 53 53 Telconet S.A
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 838 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 217 78 10 RAYA Telecom - Egypt
29571 161 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 3655 3822 255 bellsouth.net, inc.
4323 2649 1090 398 Time Warner Telecom
4766 2429 9482 904 Korea Telecom (KIX)
23456 2270 650 1233 32-bit ASN transition
17974 1824 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1635 308 42 AT&T Worldnet Services
7545 1549 300 81 TPG Internet Pty Ltd
20115 1535 1552 638 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 2649 2251 Time Warner Telecom
17974 1824 1795 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 PaeTec Communications, Inc.
6478 1635 1593 AT&T Worldnet Services
18566 1760 1531 Covad Communications
4766 2429 1525 Korea Telecom (KIX)
7545 1549 1468 TPG Internet Pty Ltd
4755 1453 1286 TATA Communications formerly
10620 1437 1277 TVCABLE BOGOTA
11492 1266 1251 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
31.15.128.0/17 12644 Telemach Autonomous System
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 /8:20 /9:12 /10:28 /11:77 /12:221
/13:458 /14:784 /15:1379 /16:11667 /17:5743 /18:9621
/19:19178 /20:25606 /21:25627 /22:33756 /23:32635 /24:185578
/25:1111 /26:1279 /27:699 /28:38 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2256 3655 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1589 1635 AT&T Worldnet Services
4323 1346 2649 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1215 1266 Cable One
23456 1142 2270 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1789 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)
----------------------------------------------
1:259 2:49 4:14 5:1 6:1 8:347
12:2008 13:1 14:439 15:15 16:3 17:8
20:9 23:5 24:1609 27:723 31:223 32:60
33:3 34:2 37:1 38:764 40:101 41:2403
42:1 44:3 46:866 47:4 49:177 50:365
52:13 55:4 56:2 57:31 58:845 59:476
60:387 61:1265 62:984 63:1920 64:3930 65:2326
66:4352 67:1855 68:1081 69:2964 70:699 71:345
72:1906 73:1 74:2352 75:297 76:336 77:836
78:670 79:453 80:1095 81:829 82:503 83:453
84:646 85:1083 86:565 87:759 88:331 89:1581
90:183 91:3700 92:514 93:1061 94:1259 95:787
96:462 97:251 98:821 99:35 101:64 103:5
106:1 107:5 108:84 109:932 110:556 111:695
112:327 113:390 114:524 115:682 116:946 117:672
118:806 119:1143 120:301 121:672 122:1627 123:1070
124:1250 125:1272 128:265 129:164 130:172 131:565
132:113 133:19 134:217 135:49 136:214 137:142
138:301 139:104 140:488 141:174 142:398 143:397
144:485 145:52 146:441 147:205 148:580 149:233
150:171 151:187 152:307 153:180 154:3 155:395
156:190 157:352 158:132 159:382 160:316 161:243
162:277 163:165 164:489 165:350 166:511 167:426
168:719 169:153 170:783 171:76 172:1 173:1495
174:531 175:359 177:80 178:857 180:818 181:9
182:431 183:200 184:252 185:1 186:1143 187:807
188:969 189:1003 190:4837 192:5791 193:4825 194:3458
195:2966 196:1187 197:16 198:3570 199:3920 200:5501
201:1450 202:8356 203:8463 204:4132 205:2328 206:2744
207:3030 208:3965 209:3509 210:2729 211:1382 212:1975
213:1716 214:744 215:67 216:4884 217:1657 218:561
219:376 220:1195 221:483 222:341 223:143
End of report
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