Routing Table Report 04:00 +10GMT Thu 17 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350351
Prefixes after maximum aggregation: 158059
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 173188
Total ASes present in the Internet Routing Table: 36095
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 31125
Origin ASes announcing only one prefix: 14970
Transit ASes present in the Internet Routing Table: 4970
Transit-only ASes present in the Internet Routing Table: 125
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: 413
Unregistered ASNs in the Routing Table: 193
Number of 32-bit ASNs allocated by the RIRs: 1203
Prefixes from 32-bit ASNs in the Routing Table: 1
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 195
Number of addresses announced to Internet: 2384356640
Equivalent to 142 /8s, 30 /16s and 101 /24s
Percentage of available address space announced: 64.3
Percentage of allocated address space announced: 64.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.3
Total number of prefixes smaller than registry allocations: 145012
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87547
Total APNIC prefixes after maximum aggregation: 29774
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84367
Unique aggregates announced from the APNIC address blocks: 36391
APNIC Region origin ASes present in the Internet Routing Table: 4358
APNIC Prefixes per ASN: 19.36
APNIC Region origin ASes announcing only one prefix: 1209
APNIC Region transit ASes present in the Internet Routing Table: 686
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 595968544
Equivalent to 35 /8s, 133 /16s and 194 /24s
Percentage of available APNIC address space announced: 75.6
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: 140028
Total ARIN prefixes after maximum aggregation: 71815
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110660
Unique aggregates announced from the ARIN address blocks: 45017
ARIN Region origin ASes present in the Internet Routing Table: 14257
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5421
ARIN Region transit ASes present in the Internet Routing Table: 1470
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 796595456
Equivalent to 47 /8s, 123 /16s and 21 /24s
Percentage of available ARIN address space announced: 63.3
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: 82935
Total RIPE prefixes after maximum aggregation: 47218
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76291
Unique aggregates announced from the RIPE address blocks: 50023
RIPE Region origin ASes present in the Internet Routing Table: 15430
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7782
RIPE Region transit ASes present in the Internet Routing Table: 2410
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 464835840
Equivalent to 27 /8s, 180 /16s and 213 /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: 32178
Total LACNIC prefixes after maximum aggregation: 7346
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31088
Unique aggregates announced from the LACNIC address blocks: 16119
LACNIC Region origin ASes present in the Internet Routing Table: 1432
LACNIC Prefixes per ASN: 21.71
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 258
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 81461632
Equivalent to 4 /8s, 219 /16s and 1 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7450
Total AfriNIC prefixes after maximum aggregation: 1802
AfriNIC Deaggregation factor: 4.13
Prefixes being announced from the AfriNIC address blocks: 5885
Unique aggregates announced from the AfriNIC address blocks: 1814
AfriNIC Region origin ASes present in the Internet Routing Table: 434
AfriNIC Prefixes per ASN: 13.56
AfriNIC Region origin ASes announcing only one prefix: 128
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 5.3
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 22078464
Equivalent to 1 /8s, 80 /16s and 228 /24s
Percentage of available AfriNIC address space announced: 32.9
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 2415 9508 894 Korea Telecom (KIX)
7545 1569 301 84 TPG Internet Pty Ltd
4755 1471 653 157 TATA Communications formerly
17974 1428 475 29 PT TELEKOMUNIKASI INDONESIA
24560 1129 324 186 Bharti Airtel Ltd., Telemedia
9583 1047 77 490 Sify Limited
4808 1046 2142 294 CNCGROUP IP network: China169
9829 1003 868 53 BSNL National Internet Backbo
17488 937 162 96 Hathway IP Over Cable Interne
18101 937 117 144 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 3677 3839 259 bellsouth.net, inc.
4323 2585 1093 402 Time Warner Telecom
1785 1791 681 131 PaeTec Communications, Inc.
18566 1557 328 197 Covad Communications
6478 1546 299 73 AT&T Worldnet Services
20115 1529 1536 648 Charter Communications
19262 1488 4939 299 Verizon Global Networks
7018 1369 6835 888 AT&T WorldNet Services
11492 1318 237 64 Cable One
2386 1287 536 928 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 515 1780 318 UPC Distribution Services
9198 470 267 15 Kazakhtelecom Data Network Ad
3292 453 2013 391 TDC Tele Danmark
34984 451 95 201 BILISIM TELEKOM
8866 444 133 24 Bulgarian Telecommunication C
20940 411 98 314 Akamai Technologies European
3320 408 7604 354 Deutsche Telekom AG
8402 408 320 11 Corbina telecom
8551 403 353 46 Bezeq International
12479 403 577 6 Uni2 Autonomous System
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 1392 259 163 TVCABLE BOGOTA
28573 1240 965 82 NET Servicos de Comunicao S.A
8151 1237 2702 368 UniNet S.A. de C.V.
6503 1174 354 73 AVANTEL, S.A.
7303 921 464 145 Telecom Argentina Stet-France
14420 635 52 88 CORPORACION NACIONAL DE TELEC
22047 543 310 15 VTR PUNTO NET S.A.
3816 513 225 97 Empresa Nacional de Telecomun
11172 487 99 81 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 793 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 297 271 14 Etisalat MISR
3741 266 987 228 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 204 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 147 439 87 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 3677 3839 259 bellsouth.net, inc.
4323 2585 1093 402 Time Warner Telecom
4766 2415 9508 894 Korea Telecom (KIX)
1785 1791 681 131 PaeTec Communications, Inc.
7545 1569 301 84 TPG Internet Pty Ltd
18566 1557 328 197 Covad Communications
6478 1546 299 73 AT&T Worldnet Services
20115 1529 1536 648 Charter Communications
19262 1488 4939 299 Verizon Global Networks
4755 1471 653 157 TATA Communications formerly
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 2585 2183 Time Warner Telecom
1785 1791 1660 PaeTec Communications, Inc.
4766 2415 1521 Korea Telecom (KIX)
7545 1569 1485 TPG Internet Pty Ltd
6478 1546 1473 AT&T Worldnet Services
17974 1428 1399 PT TELEKOMUNIKASI INDONESIA
18566 1557 1360 Covad Communications
4755 1471 1314 TATA Communications formerly
11492 1318 1254 Cable One
10620 1392 1229 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
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
31.185.0.0/21 48573 LLC NFS Telecom
31.185.8.0/21 43801 RIPE Network Coordination Cen
31.185.104.0/21 8881 KomTel routing policies
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 /11:73 /12:216
/13:447 /14:767 /15:1369 /16:11552 /17:5688 /18:9388
/19:19014 /20:24685 /21:25271 /22:33620 /23:32007 /24:182931
/25:1129 /26:1344 /27:736 /28:41 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3677 bellsouth.net, inc.
18566 1536 1557 Covad Communications
6478 1500 1546 AT&T Worldnet Services
4323 1394 2585 Time Warner Telecom
10620 1283 1392 TVCABLE BOGOTA
11492 1275 1318 Cable One
7011 1063 1163 Citizens Utilities
1785 1057 1791 PaeTec Communications, Inc.
6503 953 1174 AVANTEL, S.A.
22773 833 1284 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:271 2:70 4:14 5:1 8:340 12:2027
13:1 14:430 15:15 16:3 17:8 20:10
23:3 24:1543 27:639 31:2 32:62 33:4
34:2 37:1 38:715 39:1 40:101 41:2280
44:3 46:728 47:4 49:165 50:107 52:13
55:3 56:2 57:32 58:864 59:495 60:387
61:1146 62:997 63:1926 64:3871 65:2352 66:4365
67:1775 68:1076 69:2899 70:706 71:359 72:1937
73:1 74:2316 75:283 76:342 77:845 78:698
79:454 80:1093 81:818 82:515 83:468 84:644
85:1042 86:576 87:760 88:353 89:1569 90:174
91:3638 92:500 93:1042 94:1218 95:786 96:448
97:251 98:791 99:34 101:48 106:1 107:4
108:72 109:902 110:478 111:716 112:318 113:372
114:500 115:707 116:967 117:688 118:723 119:1046
120:257 121:760 122:1608 123:1038 124:1296 125:1266
128:245 129:169 130:171 131:561 132:100 133:20
134:216 135:49 136:213 137:145 138:299 139:107
140:486 141:173 142:377 143:377 144:470 145:52
146:435 147:209 148:629 149:274 150:161 151:187
152:298 153:180 154:3 155:370 156:178 157:348
158:128 159:374 160:313 161:212 162:278 163:160
164:490 165:348 166:499 167:410 168:716 169:156
170:758 171:69 172:2 173:1242 174:518 175:332
177:45 178:798 180:818 181:4 182:389 183:245
184:227 185:1 186:1046 187:863 188:926 189:1033
190:4719 192:5764 193:4793 194:3494 195:2947 196:1181
197:15 198:3573 199:3865 200:5598 201:1587 202:8327
203:8487 204:4107 205:2310 206:2643 207:3021 208:3901
209:3482 210:2685 211:1347 212:1946 213:1704 214:753
215:65 216:4863 217:1648 218:552 219:382 220:1196
221:472 222:321 223:100
End of report
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