Routing Table Report 04:00 +10GMT Wed 30 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351532
Prefixes after maximum aggregation: 159440
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173524
Total ASes present in the Internet Routing Table: 37082
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31154
Origin ASes announcing only one prefix: 14986
Transit ASes present in the Internet Routing Table: 4997
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 504
Unregistered ASNs in the Routing Table: 222
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 931
Prefixes from 32-bit ASNs in the Routing Table: 2024
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 192
Number of addresses announced to Internet: 2391260736
Equivalent to 142 /8s, 135 /16s and 190 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.8
Total number of prefixes smaller than registry allocations: 145517
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87872
Total APNIC prefixes after maximum aggregation: 29907
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84748
Unique aggregates announced from the APNIC address blocks: 36652
APNIC Region origin ASes present in the Internet Routing Table: 4379
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1211
APNIC Region transit ASes present in the Internet Routing Table: 698
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 601146688
Equivalent to 35 /8s, 212 /16s and 197 /24s
Percentage of available APNIC address space announced: 76.2
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: 138677
Total ARIN prefixes after maximum aggregation: 70818
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111148
Unique aggregates announced from the ARIN address blocks: 44963
ARIN Region origin ASes present in the Internet Routing Table: 14275
ARIN Prefixes per ASN: 7.79
ARIN Region origin ASes announcing only one prefix: 5436
ARIN Region transit ASes present in the Internet Routing Table: 1483
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797259520
Equivalent to 47 /8s, 133 /16s and 55 /24s
Percentage of available ARIN address space announced: 63.4
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: 82766
Total RIPE prefixes after maximum aggregation: 47226
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76123
Unique aggregates announced from the RIPE address blocks: 49960
RIPE Region origin ASes present in the Internet Routing Table: 15429
RIPE Prefixes per ASN: 4.93
RIPE Region origin ASes announcing only one prefix: 7775
RIPE Region transit ASes present in the Internet Routing Table: 2398
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 689
Number of RIPE addresses announced to Internet: 464905472
Equivalent to 27 /8s, 181 /16s and 229 /24s
Percentage of available RIPE address space announced: 74.9
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: 32302
Total LACNIC prefixes after maximum aggregation: 7368
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31199
Unique aggregates announced from the LACNIC address blocks: 16230
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.68
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 263
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: 181
Number of LACNIC addresses announced to Internet: 81541248
Equivalent to 4 /8s, 220 /16s and 56 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7635
Total AfriNIC prefixes after maximum aggregation: 1814
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6004
Unique aggregates announced from the AfriNIC address blocks: 1858
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.2
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: 22683392
Equivalent to 1 /8s, 90 /16s and 31 /24s
Percentage of available AfriNIC address space announced: 33.8
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 2425 9509 902 Korea Telecom (KIX)
7545 1546 301 84 TPG Internet Pty Ltd
4755 1480 649 158 TATA Communications formerly
17974 1460 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
4808 1026 2096 294 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
17488 938 162 97 Hathway IP Over Cable Interne
18101 934 116 139 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 3672 3838 262 bellsouth.net, inc.
4323 2567 1093 401 Time Warner Telecom
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1582 303 39 AT&T Worldnet Services
20115 1527 1539 647 Charter Communications
19262 1489 4935 303 Verizon Global Networks
7018 1357 6674 883 AT&T WorldNet Services
11492 1321 240 15 Cable One
22773 1288 2865 80 Cox Communications, Inc.
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 514 1780 318 UPC Distribution Services
34984 474 96 198 BILISIM TELEKOM
3292 455 2013 392 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Data Network Ad
3320 412 7604 359 Deutsche Telekom AG
20940 412 98 318 Akamai Technologies European
8551 403 353 46 Bezeq International
12479 398 577 6 Uni2 Autonomous System
8402 396 320 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 1403 262 152 TVCABLE BOGOTA
28573 1254 971 84 NET Servicos de Comunicao S.A
8151 1238 2674 368 UniNet S.A. de C.V.
6503 1148 354 73 AVANTEL, S.A.
7303 923 465 148 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 515 225 98 Empresa Nacional de Telecomun
13489 493 217 107 Orbitel S.A. E.S.P.
11172 486 83 79 Servicios Alestra S.A de C.V
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 845 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 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 3672 3838 262 bellsouth.net, inc.
4323 2567 1093 401 Time Warner Telecom
4766 2425 9509 902 Korea Telecom (KIX)
23456 2024 495 1104 32-bit ASN transition
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1582 303 39 AT&T Worldnet Services
7545 1546 301 84 TPG Internet Pty Ltd
20115 1527 1539 647 Charter Communications
19262 1489 4935 303 Verizon Global Networks
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 2567 2166 Time Warner Telecom
1785 1786 1655 PaeTec Communications, Inc.
6478 1582 1543 AT&T Worldnet Services
4766 2425 1523 Korea Telecom (KIX)
7545 1546 1462 TPG Internet Pty Ltd
17974 1460 1427 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1480 1322 TATA Communications formerly
11492 1321 1306 Cable One
10620 1403 1251 TVCABLE BOGOTA
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
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 E-Rent LLC
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
31.22.80.0/21 8455 ATOM86
41.57.192.0/18 22750 BCSNET
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 /8:19 /9:11 /10:26 /11:74 /12:218
/13:448 /14:767 /15:1373 /16:11583 /17:5703 /18:9415
/19:19075 /20:24820 /21:25225 /22:33678 /23:32177 /24:183739
/25:1139 /26:1275 /27:710 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2266 3672 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1536 1582 AT&T Worldnet Services
4323 1377 2567 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1270 1321 Cable One
23456 1090 2024 32-bit ASN transition
7011 1063 1164 Citizens Utilities
1785 1056 1786 PaeTec Communications, Inc.
6503 931 1148 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:58 4:14 5:1 8:347 12:2022
13:1 14:429 15:15 16:3 17:8 20:9
23:4 24:1590 27:700 31:21 32:60 33:3
34:2 37:1 38:748 39:1 40:101 41:2377
44:3 46:773 47:4 49:146 50:130 52:13
55:5 56:2 57:30 58:818 59:501 60:387
61:1171 62:1005 63:1913 64:3880 65:2355 66:4370
67:1805 68:1076 69:2921 70:696 71:343 72:1897
73:1 74:2332 75:284 76:336 77:849 78:696
79:451 80:1097 81:824 82:511 83:463 84:648
85:1020 86:518 87:759 88:343 89:1565 90:175
91:3652 92:508 93:1039 94:1223 95:781 96:456
97:251 98:811 99:35 101:49 106:1 107:4
108:80 109:927 110:517 111:680 112:329 113:386
114:515 115:718 116:939 117:675 118:753 119:1092
120:287 121:761 122:1609 123:1060 124:1312 125:1256
128:266 129:174 130:173 131:566 132:109 133:20
134:216 135:49 136:213 137:142 138:300 139:105
140:486 141:173 142:377 143:389 144:481 145:52
146:439 147:190 148:637 149:270 150:167 151:187
152:299 153:180 154:3 155:390 156:185 157:348
158:131 159:380 160:317 161:208 162:278 163:165
164:493 165:350 166:501 167:411 168:722 169:154
170:783 171:70 172:2 173:1253 174:531 175:350
177:74 178:764 180:794 181:4 182:410 183:193
184:233 185:1 186:1110 187:900 188:919 189:1032
190:4760 192:5769 193:4789 194:3477 195:2931 196:1212
197:15 198:3586 199:3877 200:5559 201:1514 202:8387
203:8456 204:4116 205:2319 206:2646 207:3025 208:3905
209:3499 210:2718 211:1366 212:1975 213:1710 214:759
215:66 216:4884 217:1641 218:558 219:381 220:1193
221:480 222:313 223:100
End of report
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