Routing Table Report 04:00 +10GMT Fri 06 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356818
Prefixes after maximum aggregation: 161221
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176158
Total ASes present in the Internet Routing Table: 37496
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31378
Origin ASes announcing only one prefix: 15088
Transit ASes present in the Internet Routing Table: 5069
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 588
Unregistered ASNs in the Routing Table: 298
Number of 32-bit ASNs allocated by the RIRs: 1328
Number of 32-bit ASNs visible in the Routing Table: 1049
Prefixes from 32-bit ASNs in the Routing Table: 2371
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 213
Number of addresses announced to Internet: 2423150272
Equivalent to 144 /8s, 110 /16s and 86 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
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: 148142
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89373
Total APNIC prefixes after maximum aggregation: 29946
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85746
Unique aggregates announced from the APNIC address blocks: 36887
APNIC Region origin ASes present in the Internet Routing Table: 4433
APNIC Prefixes per ASN: 19.34
APNIC Region origin ASes announcing only one prefix: 1228
APNIC Region transit ASes present in the Internet Routing Table: 704
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: 612922144
Equivalent to 36 /8s, 136 /16s and 115 /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: 140393
Total ARIN prefixes after maximum aggregation: 71254
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112703
Unique aggregates announced from the ARIN address blocks: 45319
ARIN Region origin ASes present in the Internet Routing Table: 14364
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5491
ARIN Region transit ASes present in the Internet Routing Table: 1500
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: 12
Number of ARIN addresses announced to Internet: 800025600
Equivalent to 47 /8s, 175 /16s and 108 /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: 83994
Total RIPE prefixes after maximum aggregation: 48016
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77372
Unique aggregates announced from the RIPE address blocks: 51215
RIPE Region origin ASes present in the Internet Routing Table: 15571
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7808
RIPE Region transit ASes present in the Internet Routing Table: 2443
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: 776
Number of RIPE addresses announced to Internet: 467973120
Equivalent to 27 /8s, 228 /16s and 180 /24s
Percentage of available RIPE address space announced: 75.4
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: 32715
Total LACNIC prefixes after maximum aggregation: 7481
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31753
Unique aggregates announced from the LACNIC address blocks: 16611
LACNIC Region origin ASes present in the Internet Routing Table: 1445
LACNIC Prefixes per ASN: 21.97
LACNIC Region origin ASes announcing only one prefix: 426
LACNIC Region transit ASes present in the Internet Routing Table: 264
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: 208
Number of LACNIC addresses announced to Internet: 82989312
Equivalent to 4 /8s, 242 /16s and 81 /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: 7756
Total AfriNIC prefixes after maximum aggregation: 1856
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6117
Unique aggregates announced from the AfriNIC address blocks: 1910
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.68
AfriNIC Region origin ASes announcing only one prefix: 135
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: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23062528
Equivalent to 1 /8s, 95 /16s and 232 /24s
Percentage of available AfriNIC address space announced: 34.4
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 1808 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1561 301 85 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
7552 1202 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
9583 1057 77 492 Sify Limited
9829 1038 874 51 BSNL National Internet Backbo
4808 1037 2087 294 CNCGROUP IP network: China169
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 2603 1087 399 Time Warner Telecom
1785 1785 681 127 PaeTec Communications, Inc.
18566 1765 353 220 Covad Communications
6478 1665 312 50 AT&T Worldnet Services
20115 1531 1536 636 Charter Communications
19262 1496 4949 298 Verizon Global Networks
7018 1358 6927 890 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
2386 1265 536 908 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 508 106 184 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
20940 446 131 342 Akamai Technologies European
8866 444 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
3320 423 7609 368 Deutsche Telekom AG
12479 415 577 6 Uni2 Autonomous System
8551 405 355 45 Bezeq International
8402 402 320 11 Corbina telecom
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 1458 270 155 TVCABLE BOGOTA
8151 1366 2682 363 UniNet S.A. de C.V.
28573 1298 990 89 NET Servicos de Comunicao S.A
7303 928 467 148 Telecom Argentina Stet-France
6503 798 354 73 AVANTEL, S.A.
14420 667 54 92 CORPORACION NACIONAL DE TELEC
22047 557 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 494 84 82 Servicios Alestra S.A de C.V
13489 486 229 116 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 881 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 284 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 218 12 13 Starcomms Nigeria Limited
24835 201 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 85 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 2603 1087 399 Time Warner Telecom
4766 2436 9490 906 Korea Telecom (KIX)
23456 2371 665 1287 32-bit ASN transition
17974 1808 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1785 681 127 PaeTec Communications, Inc.
18566 1765 353 220 Covad Communications
6478 1665 312 50 AT&T Worldnet Services
7545 1561 301 85 TPG Internet Pty Ltd
20115 1531 1536 636 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 2603 2204 Time Warner Telecom
17974 1808 1779 PT TELEKOMUNIKASI INDONESIA
1785 1785 1658 PaeTec Communications, Inc.
6478 1665 1615 AT&T Worldnet Services
18566 1765 1545 Covad Communications
4766 2436 1530 Korea Telecom (KIX)
7545 1561 1476 TPG Internet Pty Ltd
10620 1458 1303 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
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
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
31.210.64.0/24 42926 RIPE Network Coordination Cen
31.210.65.0/24 42926 RIPE Network Coordination Cen
31.210.66.0/24 42926 RIPE Network Coordination Cen
31.210.67.0/24 42926 RIPE Network Coordination Cen
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 /12:222
/13:458 /14:790 /15:1387 /16:11689 /17:5762 /18:9691
/19:19265 /20:25620 /21:25739 /22:33995 /23:32772 /24:186049
/25:1091 /26:1271 /27:707 /28:157 /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 1727 1765 Covad Communications
6478 1619 1665 AT&T Worldnet Services
10620 1348 1458 TVCABLE BOGOTA
4323 1307 2603 Time Warner Telecom
11492 1211 1262 Cable One
23456 1179 2371 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1054 1785 PaeTec Communications, Inc.
22773 846 1329 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:266 2:59 4:14 5:1 6:3 8:353
12:1990 13:1 14:451 15:15 16:3 17:8
20:10 23:6 24:1623 27:733 31:294 32:60
33:3 34:2 37:1 38:765 40:101 41:2485
42:4 44:3 46:909 47:4 49:172 50:388
52:13 55:4 56:2 57:30 58:843 59:481
60:387 61:1267 62:994 63:1921 64:3926 65:2310
66:4330 67:1872 68:1079 69:2959 70:699 71:346
72:1886 73:1 74:2340 75:301 76:338 77:838
78:688 79:455 80:1094 81:815 82:493 83:446
84:643 85:1074 86:563 87:748 88:324 89:1596
90:189 91:3736 92:511 93:1058 94:1264 95:804
96:482 97:255 98:834 99:35 101:73 103:9
107:8 108:84 109:947 110:573 111:704 112:319
113:399 114:533 115:685 116:948 117:677 118:818
119:1141 120:305 121:672 122:1618 123:1080 124:1253
125:1220 128:259 129:163 130:165 131:567 132:110
133:19 134:217 135:49 136:214 137:142 138:302
139:113 140:480 141:239 142:400 143:400 144:488
145:52 146:440 147:208 148:594 149:243 150:171
151:187 152:310 153:179 154:3 155:395 156:190
157:353 158:130 159:384 160:315 161:207 162:279
163:164 164:498 165:348 166:511 167:427 168:718
169:153 170:792 171:76 172:1 173:1542 174:539
175:373 177:111 178:851 180:817 181:19 182:437
183:207 184:260 185:1 186:1154 187:794 188:828
189:940 190:4850 192:5796 193:4839 194:3473 195:2970
196:1203 197:16 198:3566 199:3912 200:5530 201:1500
202:8356 203:8450 204:4146 205:2324 206:2753 207:3046
208:3960 209:3487 210:2731 211:1385 212:1975 213:1723
214:741 215:68 216:4895 217:1651 218:564 219:371
220:1203 221:484 222:342 223:144
End of report
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