Routing Table Report 04:00 +10GMT Thu 21 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355000
Prefixes after maximum aggregation: 160602
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 174359
Total ASes present in the Internet Routing Table: 37343
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31309
Origin ASes announcing only one prefix: 15065
Transit ASes present in the Internet Routing Table: 5023
Transit-only ASes present in the Internet Routing Table: 130
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: 571
Unregistered ASNs in the Routing Table: 271
Number of 32-bit ASNs allocated by the RIRs: 1308
Number of 32-bit ASNs visible in the Routing Table: 1011
Prefixes from 32-bit ASNs in the Routing Table: 2264
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2417656896
Equivalent to 144 /8s, 26 /16s and 132 /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: 147104
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88375
Total APNIC prefixes after maximum aggregation: 29894
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 85371
Unique aggregates announced from the APNIC address blocks: 36115
APNIC Region origin ASes present in the Internet Routing Table: 4412
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1222
APNIC Region transit ASes present in the Internet Routing Table: 695
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: 612539936
Equivalent to 36 /8s, 130 /16s and 158 /24s
Percentage of available APNIC address space announced: 77.7
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: 139959
Total ARIN prefixes after maximum aggregation: 71076
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112340
Unique aggregates announced from the ARIN address blocks: 45112
ARIN Region origin ASes present in the Internet Routing Table: 14328
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5473
ARIN Region transit ASes present in the Internet Routing Table: 1486
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: 798631168
Equivalent to 47 /8s, 154 /16s and 37 /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: 84033
Total RIPE prefixes after maximum aggregation: 47818
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77163
Unique aggregates announced from the RIPE address blocks: 50799
RIPE Region origin ASes present in the Internet Routing Table: 15526
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7802
RIPE Region transit ASes present in the Internet Routing Table: 2426
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: 747
Number of RIPE addresses announced to Internet: 466666240
Equivalent to 27 /8s, 208 /16s and 195 /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: 32473
Total LACNIC prefixes after maximum aggregation: 7437
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31475
Unique aggregates announced from the LACNIC address blocks: 16461
LACNIC Region origin ASes present in the Internet Routing Table: 1442
LACNIC Prefixes per ASN: 21.83
LACNIC Region origin ASes announcing only one prefix: 435
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: 200
Number of LACNIC addresses announced to Internet: 82623104
Equivalent to 4 /8s, 236 /16s and 186 /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: 7652
Total AfriNIC prefixes after maximum aggregation: 1818
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6052
Unique aggregates announced from the AfriNIC address blocks: 1869
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.75
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 96
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: 23284480
Equivalent to 1 /8s, 99 /16s and 75 /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 1822 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1551 301 83 TPG Internet Pty Ltd
4755 1454 638 167 TATA Communications formerly
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1034 2102 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 942 164 98 Hathway IP Over Cable Interne
18101 935 116 139 Reliance Infocom Ltd Internet
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 3659 3822 255 bellsouth.net, inc.
4323 2647 1090 397 Time Warner Telecom
1785 1791 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1633 308 40 AT&T Worldnet Services
20115 1534 1550 638 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1356 6801 885 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 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 519 1780 321 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 436 126 335 Akamai Technologies European
3320 420 7608 366 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 1430 266 157 TVCABLE BOGOTA
28573 1282 988 87 NET Servicos de Comunicao S.A
8151 1252 2688 371 UniNet S.A. de C.V.
7303 928 467 148 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 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 236 215 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 3659 3822 255 bellsouth.net, inc.
4323 2647 1090 397 Time Warner Telecom
4766 2429 9482 904 Korea Telecom (KIX)
23456 2264 652 1231 32-bit ASN transition
17974 1822 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1791 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1633 308 40 AT&T Worldnet Services
7545 1551 301 83 TPG Internet Pty Ltd
20115 1534 1550 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 2647 2250 Time Warner Telecom
17974 1822 1793 PT TELEKOMUNIKASI INDONESIA
1785 1791 1663 PaeTec Communications, Inc.
6478 1633 1593 AT&T Worldnet Services
18566 1760 1531 Covad Communications
4766 2429 1525 Korea Telecom (KIX)
7545 1551 1468 TPG Internet Pty Ltd
4755 1454 1287 TATA Communications formerly
10620 1430 1273 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
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
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
31.133.96.0/21 50440 RomEuro Consult SRL
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 /8:21 /9:12 /10:28 /11:77 /12:220
/13:455 /14:780 /15:1378 /16:11637 /17:5736 /18:9531
/19:19173 /20:25245 /21:25633 /22:33731 /23:32618 /24:185577
/25:1113 /26:1282 /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 2258 3659 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1587 1633 AT&T Worldnet Services
4323 1345 2647 Time Warner Telecom
10620 1320 1430 TVCABLE BOGOTA
11492 1215 1266 Cable One
23456 1137 2264 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1061 1791 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)
----------------------------------------------
1:257 2:50 4:14 5:1 6:1 8:347
12:2010 13:1 14:442 15:15 16:3 17:8
20:9 23:5 24:1608 27:719 31:223 32:60
33:3 34:2 37:1 38:763 40:101 41:2375
42:1 44:3 46:862 47:4 49:173 50:363
52:13 55:4 56:2 57:31 58:844 59:476
60:387 61:1266 62:1007 63:1921 64:3929 65:2326
66:4351 67:1822 68:1083 69:2965 70:701 71:345
72:1905 73:1 74:2349 75:297 76:336 77:833
78:689 79:458 80:1096 81:829 82:504 83:452
84:645 85:1082 86:566 87:759 88:329 89:1580
90:183 91:3693 92:514 93:1060 94:1275 95:787
96:463 97:251 98:820 99:35 101:63 103:5
106:1 107:5 108:84 109:937 110:558 111:694
112:327 113:389 114:523 115:681 116:954 117:674
118:804 119:1137 120:292 121:672 122:1627 123:1061
124:1249 125:1268 128:264 129:164 130:172 131:565
132:113 133:19 134:217 135:49 136:214 137:142
138:301 139:103 140:486 141:174 142:398 143:394
144:486 145:53 146:441 147:204 148:580 149:243
150:169 151:187 152:307 153:179 154:3 155:395
156:191 157:354 158:132 159:382 160:317 161:243
162:277 163:164 164:488 165:348 166:511 167:426
168:724 169:154 170:783 171:76 172:1 173:1495
174:530 175:359 177:80 178:856 180:817 181:9
182:430 183:201 184:255 185:1 186:1143 187:803
188:986 189:1000 190:4844 192:5791 193:4826 194:3464
195:2964 196:1177 197:16 198:3567 199:3922 200:5537
201:1499 202:8346 203:8470 204:4128 205:2329 206:2744
207:3031 208:3960 209:3500 210:2730 211:1363 212:1972
213:1717 214:742 215:66 216:4870 217:1655 218:556
219:381 220:1194 221:481 222:341 223:143
End of report
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