Routing Table Report 04:00 +10GMT Fri 29 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355703
Prefixes after maximum aggregation: 161009
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175209
Total ASes present in the Internet Routing Table: 37421
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31336
Origin ASes announcing only one prefix: 15088
Transit ASes present in the Internet Routing Table: 5061
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 582
Unregistered ASNs in the Routing Table: 286
Number of 32-bit ASNs allocated by the RIRs: 1315
Number of 32-bit ASNs visible in the Routing Table: 1024
Prefixes from 32-bit ASNs in the Routing Table: 2294
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 154
Number of addresses announced to Internet: 2420621760
Equivalent to 144 /8s, 71 /16s and 193 /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: 147845
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88723
Total APNIC prefixes after maximum aggregation: 29927
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 85183
Unique aggregates announced from the APNIC address blocks: 36399
APNIC Region origin ASes present in the Internet Routing Table: 4409
APNIC Prefixes per ASN: 19.32
APNIC Region origin ASes announcing only one prefix: 1230
APNIC Region transit ASes present in the Internet Routing Table: 703
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: 611231520
Equivalent to 36 /8s, 110 /16s and 167 /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: 140125
Total ARIN prefixes after maximum aggregation: 71241
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112468
Unique aggregates announced from the ARIN address blocks: 45221
ARIN Region origin ASes present in the Internet Routing Table: 14345
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: 1492
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: 799795712
Equivalent to 47 /8s, 171 /16s and 234 /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: 84026
Total RIPE prefixes after maximum aggregation: 47927
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77187
Unique aggregates announced from the RIPE address blocks: 51093
RIPE Region origin ASes present in the Internet Routing Table: 15565
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7819
RIPE Region transit ASes present in the Internet Routing Table: 2439
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: 758
Number of RIPE addresses announced to Internet: 467406848
Equivalent to 27 /8s, 220 /16s and 16 /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: 32545
Total LACNIC prefixes after maximum aggregation: 7469
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31543
Unique aggregates announced from the LACNIC address blocks: 16526
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 426
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: 202
Number of LACNIC addresses announced to Internet: 82785280
Equivalent to 4 /8s, 239 /16s and 52 /24s
Percentage of available LACNIC address space announced: 54.8
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: 7768
Total AfriNIC prefixes after maximum aggregation: 1850
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6133
Unique aggregates announced from the AfriNIC address blocks: 1908
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.69
AfriNIC Region origin ASes announcing only one prefix: 135
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: 23368960
Equivalent to 1 /8s, 100 /16s and 149 /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 2433 9482 903 Korea Telecom (KIX)
17974 1827 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1554 301 83 TPG Internet Pty Ltd
4755 1457 634 167 TATA Communications formerly
7552 1200 1064 7 Vietel Corporation
24560 1158 336 190 Bharti Airtel Ltd., Telemedia
9583 1055 77 493 Sify Limited
4808 1034 2090 294 CNCGROUP IP network: China169
9829 1007 870 50 BSNL National Internet Backbo
17488 944 165 100 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 3641 3821 256 bellsouth.net, inc.
4323 2631 1086 397 Time Warner Telecom
1785 1790 681 128 PaeTec Communications, Inc.
18566 1790 349 229 Covad Communications
6478 1653 311 47 AT&T Worldnet Services
20115 1532 1551 643 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1344 6782 885 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1268 536 911 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 509 106 182 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 441 129 337 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 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 1446 268 160 TVCABLE BOGOTA
28573 1290 988 87 NET Servicos de Comunicao S.A
8151 1251 2690 369 UniNet S.A. de C.V.
7303 929 467 149 Telecom Argentina Stet-France
6503 904 354 72 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 566 310 15 VTR PUNTO NET S.A.
3816 518 226 98 Empresa Nacional de Telecomun
11172 490 100 83 Servicios Alestra S.A de C.V
27947 482 53 52 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 879 445 11 TEDATA
24863 779 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 300 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 239 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 211 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 3641 3821 256 bellsouth.net, inc.
4323 2631 1086 397 Time Warner Telecom
4766 2433 9482 903 Korea Telecom (KIX)
23456 2294 656 1249 32-bit ASN transition
17974 1827 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 128 PaeTec Communications, Inc.
18566 1790 349 229 Covad Communications
6478 1653 311 47 AT&T Worldnet Services
7545 1554 301 83 TPG Internet Pty Ltd
20115 1532 1551 643 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 2631 2234 Time Warner Telecom
17974 1827 1798 PT TELEKOMUNIKASI INDONESIA
1785 1790 1662 PaeTec Communications, Inc.
6478 1653 1606 AT&T Worldnet Services
18566 1790 1561 Covad Communications
4766 2433 1530 Korea Telecom (KIX)
7545 1554 1471 TPG Internet Pty Ltd
4755 1457 1290 TATA Communications formerly
10620 1446 1286 TVCABLE BOGOTA
11492 1257 1242 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
31.193.128.0/20 29550 PoundHost Internet Services.
31.200.0.0/17 12978 Dogan Iletisim Elektronik Ser
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>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 /8:21 /9:12 /10:28 /11:77 /12:221
/13:459 /14:789 /15:1386 /16:11669 /17:5755 /18:9649
/19:19173 /20:25617 /21:25629 /22:33842 /23:32661 /24:185557
/25:1115 /26:1287 /27:701 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2242 3641 bellsouth.net, inc.
18566 1758 1790 Covad Communications
6478 1607 1653 AT&T Worldnet Services
10620 1336 1446 TVCABLE BOGOTA
4323 1332 2631 Time Warner Telecom
11492 1206 1257 Cable One
23456 1154 2294 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1790 PaeTec Communications, Inc.
22773 843 1299 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:264 2:49 4:14 5:1 6:3 8:351
12:1987 13:1 14:443 15:15 16:3 17:8
20:9 23:5 24:1590 27:723 31:233 32:60
33:3 34:2 37:1 38:766 40:101 41:2455
42:5 44:3 46:884 47:4 49:171 50:376
52:13 55:6 56:2 57:31 58:843 59:481
60:387 61:1268 62:984 63:1928 64:3950 65:2321
66:4360 67:1868 68:1079 69:2960 70:698 71:346
72:1896 73:1 74:2355 75:298 76:333 77:836
78:680 79:453 80:1099 81:814 82:496 83:463
84:649 85:1080 86:564 87:749 88:323 89:1579
90:183 91:3703 92:511 93:1058 94:1259 95:798
96:474 97:250 98:825 99:35 101:68 103:5
106:1 107:5 108:83 109:940 110:557 111:688
112:318 113:396 114:518 115:685 116:939 117:674
118:786 119:1141 120:301 121:668 122:1624 123:1071
124:1250 125:1220 128:264 129:163 130:172 131:568
132:112 133:19 134:217 135:49 136:214 137:141
138:302 139:106 140:490 141:174 142:400 143:401
144:486 145:52 146:441 147:210 148:591 149:243
150:171 151:187 152:309 153:179 154:3 155:396
156:190 157:354 158:133 159:384 160:314 161:246
162:277 163:164 164:494 165:350 166:511 167:425
168:719 169:153 170:791 171:76 172:1 173:1509
174:533 175:351 177:80 178:847 180:811 181:15
182:416 183:202 184:258 185:1 186:1127 187:804
188:989 189:1011 190:4836 192:5787 193:4837 194:3472
195:2970 196:1201 197:16 198:3571 199:3913 200:5534
201:1491 202:8278 203:8423 204:4134 205:2321 206:2750
207:3029 208:3960 209:3487 210:2715 211:1386 212:1970
213:1694 214:732 215:67 216:4884 217:1653 218:562
219:373 220:1201 221:483 222:342 223:132
End of report
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