Routing Table Report 04:00 +10GMT Mon 04 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351470
Prefixes after maximum aggregation: 159807
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174049
Total ASes present in the Internet Routing Table: 37155
Prefixes per ASN: 9.46
Origin-only ASes present in the Internet Routing Table: 31198
Origin ASes announcing only one prefix: 15021
Transit ASes present in the Internet Routing Table: 5008
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: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 516
Unregistered ASNs in the Routing Table: 226
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 949
Prefixes from 32-bit ASNs in the Routing Table: 2088
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 188
Number of addresses announced to Internet: 2393118240
Equivalent to 142 /8s, 164 /16s and 22 /24s
Percentage of available address space announced: 64.6
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.1
Total number of prefixes smaller than registry allocations: 145646
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87411
Total APNIC prefixes after maximum aggregation: 29927
APNIC Deaggregation factor: 2.92
Prefixes being announced from the APNIC address blocks: 84330
Unique aggregates announced from the APNIC address blocks: 36671
APNIC Region origin ASes present in the Internet Routing Table: 4383
APNIC Prefixes per ASN: 19.24
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 691
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: 601759520
Equivalent to 35 /8s, 222 /16s and 31 /24s
Percentage of available APNIC address space announced: 76.3
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: 138546
Total ARIN prefixes after maximum aggregation: 70788
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111061
Unique aggregates announced from the ARIN address blocks: 45011
ARIN Region origin ASes present in the Internet Routing Table: 14289
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5454
ARIN Region transit ASes present in the Internet Routing Table: 1487
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: 10
Number of ARIN addresses announced to Internet: 797468672
Equivalent to 47 /8s, 136 /16s and 104 /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: 83173
Total RIPE prefixes after maximum aggregation: 47515
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76422
Unique aggregates announced from the RIPE address blocks: 50355
RIPE Region origin ASes present in the Internet Routing Table: 15466
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7780
RIPE Region transit ASes present in the Internet Routing Table: 2413
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 700
Number of RIPE addresses announced to Internet: 465644032
Equivalent to 27 /8s, 193 /16s and 42 /24s
Percentage of available RIPE address space announced: 75.0
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: 32381
Total LACNIC prefixes after maximum aggregation: 7407
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31284
Unique aggregates announced from the LACNIC address blocks: 16245
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.74
LACNIC Region origin ASes announcing only one prefix: 432
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: 188
Number of LACNIC addresses announced to Internet: 81653888
Equivalent to 4 /8s, 221 /16s and 240 /24s
Percentage of available LACNIC address space announced: 54.1
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: 7610
Total AfriNIC prefixes after maximum aggregation: 1821
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5998
Unique aggregates announced from the AfriNIC address blocks: 1871
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.63
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 5.1
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: 22714624
Equivalent to 1 /8s, 90 /16s and 153 /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 2435 9514 905 Korea Telecom (KIX)
7545 1544 301 84 TPG Internet Pty Ltd
17974 1440 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1436 634 167 TATA Communications formerly
24560 1137 322 204 Bharti Airtel Ltd., Telemedia
4808 1062 2140 294 CNCGROUP IP network: China169
9583 1055 77 494 Sify Limited
9829 972 841 55 BSNL National Internet Backbo
17488 941 162 97 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 3670 3838 257 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
1785 1786 681 130 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1531 1541 640 Charter Communications
19262 1489 4935 303 Verizon Global Networks
7018 1355 6769 881 AT&T WorldNet Services
11492 1327 240 15 Cable One
22773 1292 2865 84 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 484 97 186 BILISIM TELEKOM
3292 454 2013 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 446 127 337 Akamai Technologies European
9198 415 267 15 Kazakhtelecom Data Network Ad
3320 413 7604 359 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 399 577 6 Uni2 Autonomous System
702 395 1800 308 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 1405 262 152 TVCABLE BOGOTA
28573 1264 971 84 NET Servicos de Comunicao S.A
8151 1244 2676 377 UniNet S.A. de C.V.
6503 1116 354 72 AVANTEL, S.A.
7303 925 465 149 Telecom Argentina Stet-France
14420 642 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 515 225 98 Empresa Nacional de Telecomun
11172 486 83 79 Servicios Alestra S.A de C.V
7738 479 922 30 Telecomunicacoes da Bahia 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 840 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 146 441 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 3670 3838 257 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
4766 2435 9514 905 Korea Telecom (KIX)
23456 2088 503 1125 32-bit ASN transition
1785 1786 681 130 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
7545 1544 301 84 TPG Internet Pty Ltd
20115 1531 1541 640 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 2540 2144 Time Warner Telecom
1785 1786 1656 PaeTec Communications, Inc.
6478 1596 1549 AT&T Worldnet Services
4766 2435 1530 Korea Telecom (KIX)
7545 1544 1460 TPG Internet Pty Ltd
18566 1606 1411 Covad Communications
17974 1440 1407 PT TELEKOMUNIKASI INDONESIA
11492 1327 1312 Cable One
4755 1436 1269 TATA Communications formerly
10620 1405 1253 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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>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 /8:19 /9:11 /10:26 /11:74 /12:218
/13:447 /14:769 /15:1374 /16:11565 /17:5719 /18:9427
/19:19079 /20:24853 /21:25326 /22:33620 /23:32142 /24:183616
/25:1141 /26:1280 /27:707 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2264 3670 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1550 1596 AT&T Worldnet Services
4323 1360 2540 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1276 1327 Cable One
23456 1110 2088 32-bit ASN transition
7011 1064 1164 Citizens Utilities
1785 1055 1786 PaeTec Communications, Inc.
6503 900 1116 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 2:54 4:14 5:1 8:347 12:2016
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1597 27:707 31:53 32:60 33:2
34:2 37:1 38:751 39:1 40:101 41:2373
42:1 44:3 46:792 47:4 49:143 50:141
52:13 55:6 56:2 57:30 58:827 59:487
60:387 61:1141 62:1010 63:1906 64:3871 65:2334
66:4309 67:1810 68:1079 69:2907 70:701 71:343
72:1899 73:1 74:2326 75:285 76:336 77:851
78:694 79:450 80:1076 81:822 82:510 83:464
84:647 85:1031 86:556 87:760 88:339 89:1562
90:175 91:3653 92:509 93:1043 94:1238 95:788
96:459 97:253 98:818 99:35 101:49 106:1
107:4 108:80 109:927 110:517 111:680 112:325
113:388 114:512 115:675 116:932 117:688 118:765
119:1113 120:287 121:708 122:1607 123:1047 124:1287
125:1250 128:265 129:174 130:172 131:566 132:109
133:20 134:216 135:49 136:213 137:142 138:300
139:105 140:486 141:173 142:378 143:389 144:480
145:52 146:443 147:202 148:636 149:263 150:167
151:187 152:298 153:180 154:3 155:389 156:187
157:348 158:131 159:381 160:317 161:241 162:277
163:166 164:489 165:349 166:502 167:414 168:721
169:154 170:781 171:74 172:2 173:1260 174:530
175:350 177:70 178:767 180:798 181:4 182:412
183:202 184:237 185:1 186:1120 187:895 188:923
189:1039 190:4809 192:5761 193:4805 194:3483 195:2947
196:1204 197:15 198:3590 199:3871 200:5560 201:1485
202:8367 203:8443 204:4098 205:2318 206:2647 207:3025
208:3916 209:3503 210:2722 211:1364 212:1961 213:1709
214:724 215:66 216:4851 217:1628 218:556 219:374
220:1196 221:480 222:318 223:105
End of report
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