Routing Table Report 04:00 +10GMT Fri 01 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351517
Prefixes after maximum aggregation: 159745
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173961
Total ASes present in the Internet Routing Table: 37137
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31191
Origin ASes announcing only one prefix: 15021
Transit ASes present in the Internet Routing Table: 5004
Transit-only ASes present in the Internet Routing Table: 131
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: 507
Unregistered ASNs in the Routing Table: 224
Number of 32-bit ASNs allocated by the RIRs: 1250
Number of 32-bit ASNs visible in the Routing Table: 942
Prefixes from 32-bit ASNs in the Routing Table: 2083
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 220
Number of addresses announced to Internet: 2392647200
Equivalent to 142 /8s, 156 /16s and 230 /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: 90.0
Total number of prefixes smaller than registry allocations: 145482
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87597
Total APNIC prefixes after maximum aggregation: 29922
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 84490
Unique aggregates announced from the APNIC address blocks: 36712
APNIC Region origin ASes present in the Internet Routing Table: 4387
APNIC Prefixes per ASN: 19.26
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 693
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: 45
Number of APNIC addresses announced to Internet: 601552672
Equivalent to 35 /8s, 218 /16s and 247 /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: 138612
Total ARIN prefixes after maximum aggregation: 70816
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111117
Unique aggregates announced from the ARIN address blocks: 44996
ARIN Region origin ASes present in the Internet Routing Table: 14286
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5450
ARIN Region transit ASes present in the Internet Routing Table: 1483
Average ARIN Region AS path length visible: 4.0
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: 797458432
Equivalent to 47 /8s, 136 /16s and 64 /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: 83159
Total RIPE prefixes after maximum aggregation: 47498
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76407
Unique aggregates announced from the RIPE address blocks: 50290
RIPE Region origin ASes present in the Internet Routing Table: 15459
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7787
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: 698
Number of RIPE addresses announced to Internet: 465448704
Equivalent to 27 /8s, 190 /16s and 47 /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: 32226
Total LACNIC prefixes after maximum aggregation: 7371
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31244
Unique aggregates announced from the LACNIC address blocks: 16251
LACNIC Region origin ASes present in the Internet Routing Table: 1438
LACNIC Prefixes per ASN: 21.73
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: 184
Number of LACNIC addresses announced to Internet: 81585536
Equivalent to 4 /8s, 220 /16s and 229 /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: 7584
Total AfriNIC prefixes after maximum aggregation: 1799
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 5955
Unique aggregates announced from the AfriNIC address blocks: 1815
AfriNIC Region origin ASes present in the Internet Routing Table: 438
AfriNIC Prefixes per ASN: 13.60
AfriNIC Region origin ASes announcing only one prefix: 130
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 5.3
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: 22700800
Equivalent to 1 /8s, 90 /16s and 99 /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 2433 9514 905 Korea Telecom (KIX)
7545 1544 301 84 TPG Internet Pty Ltd
17974 1449 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1434 634 167 TATA Communications formerly
24560 1135 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
4808 1032 2105 294 CNCGROUP IP network: China169
9829 1006 869 51 BSNL National Internet Backbo
17488 940 162 98 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 3670 3838 257 bellsouth.net, inc.
4323 2562 1091 398 Time Warner Telecom
1785 1787 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1590 304 43 AT&T Worldnet Services
20115 1528 1539 648 Charter Communications
19262 1489 4935 303 Verizon Global Networks
7018 1356 6801 886 AT&T WorldNet Services
11492 1325 240 15 Cable One
22773 1291 2865 83 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 96 199 BILISIM TELEKOM
3292 455 2013 392 TDC Tele Danmark
8866 444 133 25 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Data Network Ad
3320 413 7604 359 Deutsche Telekom AG
20940 413 97 319 Akamai Technologies European
8551 403 353 46 Bezeq International
12479 399 577 6 Uni2 Autonomous System
702 391 1800 305 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 1261 971 84 NET Servicos de Comunicao S.A
8151 1247 2678 371 UniNet S.A. de C.V.
6503 1117 354 73 AVANTEL, S.A.
7303 901 464 136 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 839 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 295 271 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 230 13 5 Starcomms Nigeria Limited
29571 192 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 2562 1091 398 Time Warner Telecom
4766 2433 9514 905 Korea Telecom (KIX)
23456 2083 498 1120 32-bit ASN transition
1785 1787 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1590 304 43 AT&T Worldnet Services
7545 1544 301 84 TPG Internet Pty Ltd
20115 1528 1539 648 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 2562 2164 Time Warner Telecom
1785 1787 1656 PaeTec Communications, Inc.
6478 1590 1547 AT&T Worldnet Services
4766 2433 1528 Korea Telecom (KIX)
7545 1544 1460 TPG Internet Pty Ltd
17974 1449 1416 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
11492 1325 1310 Cable One
4755 1434 1267 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
31.170.48.0/20 44208 RIPE Network Coordination Cen
31.170.64.0/19 8887 TESATEL, s.r.o.
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 /15:1375 /16:11604 /17:5723 /18:9445
/19:19083 /20:24850 /21:25309 /22:33635 /23:32141 /24:183676
/25:1111 /26:1259 /27:696 /28:30 /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 1544 1590 AT&T Worldnet Services
4323 1377 2562 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1274 1325 Cable One
23456 1104 2083 32-bit ASN transition
7011 1064 1164 Citizens Utilities
1785 1056 1787 PaeTec Communications, Inc.
6503 900 1117 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:296 2:55 4:14 5:1 8:347 12:2013
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1597 27:707 31:53 32:60 33:3
34:2 37:1 38:747 39:1 40:101 41:2342
44:3 46:781 47:4 49:140 50:138 52:13
55:5 56:2 57:30 58:825 59:487 60:387
61:1148 62:1006 63:1915 64:3886 65:2341 66:4347
67:1807 68:1077 69:2919 70:697 71:343 72:1894
73:1 74:2328 75:285 76:336 77:851 78:692
79:450 80:1082 81:820 82:504 83:463 84:647
85:1032 86:555 87:760 88:342 89:1564 90:175
91:3664 92:511 93:1043 94:1232 95:785 96:458
97:253 98:815 99:35 101:49 106:1 107:4
108:80 109:927 110:518 111:681 112:332 113:380
114:518 115:674 116:939 117:675 118:768 119:1127
120:288 121:710 122:1610 123:1057 124:1287 125:1252
128:265 129:174 130:173 131:566 132:110 133:20
134:216 135:49 136:213 137:142 138:300 139:112
140:485 141:173 142:378 143:391 144:481 145:52
146:442 147:197 148:638 149:271 150:166 151:187
152:298 153:180 154:3 155:390 156:186 157:318
158:131 159:381 160:316 161:209 162:277 163:165
164:493 165:348 166:502 167:414 168:720 169:154
170:779 171:70 172:2 173:1257 174:532 175:352
177:78 178:767 180:799 181:4 182:412 183:201
184:236 185:1 186:1117 187:903 188:922 189:1039
190:4768 192:5772 193:4792 194:3487 195:2939 196:1212
197:15 198:3589 199:3882 200:5567 201:1484 202:8376
203:8449 204:4115 205:2320 206:2646 207:3027 208:3889
209:3487 210:2721 211:1365 212:1975 213:1705 214:758
215:65 216:4882 217:1642 218:558 219:373 220:1196
221:480 222:314 223:104
End of report
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