Routing Table Report 04:00 +10GMT Fri 18 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350440
Prefixes after maximum aggregation: 158081
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 173125
Total ASes present in the Internet Routing Table: 36103
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 31129
Origin ASes announcing only one prefix: 14980
Transit ASes present in the Internet Routing Table: 4974
Transit-only ASes present in the Internet Routing Table: 126
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: 420
Unregistered ASNs in the Routing Table: 197
Number of 32-bit ASNs allocated by the RIRs: 1204
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: 2385189440
Equivalent to 142 /8s, 43 /16s and 26 /24s
Percentage of available address space announced: 64.4
Percentage of allocated address space announced: 64.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.4
Total number of prefixes smaller than registry allocations: 145082
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87593
Total APNIC prefixes after maximum aggregation: 29764
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84414
Unique aggregates announced from the APNIC address blocks: 36416
APNIC Region origin ASes present in the Internet Routing Table: 4357
APNIC Prefixes per ASN: 19.37
APNIC Region origin ASes announcing only one prefix: 1212
APNIC Region transit ASes present in the Internet Routing Table: 688
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 596348480
Equivalent to 35 /8s, 139 /16s and 142 /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: 140220
Total ARIN prefixes after maximum aggregation: 71854
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110801
Unique aggregates announced from the ARIN address blocks: 45048
ARIN Region origin ASes present in the Internet Routing Table: 14266
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5422
ARIN Region transit ASes present in the Internet Routing Table: 1475
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 796820224
Equivalent to 47 /8s, 126 /16s and 131 /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: 82838
Total RIPE prefixes after maximum aggregation: 47217
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76209
Unique aggregates announced from the RIPE address blocks: 49931
RIPE Region origin ASes present in the Internet Routing Table: 15428
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7784
RIPE Region transit ASes present in the Internet Routing Table: 2406
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 464943360
Equivalent to 27 /8s, 182 /16s and 121 /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: 32094
Total LACNIC prefixes after maximum aggregation: 7336
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 30995
Unique aggregates announced from the LACNIC address blocks: 16111
LACNIC Region origin ASes present in the Internet Routing Table: 1432
LACNIC Prefixes per ASN: 21.64
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 259
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 81446528
Equivalent to 4 /8s, 218 /16s and 198 /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: 7480
Total AfriNIC prefixes after maximum aggregation: 1806
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5875
Unique aggregates announced from the AfriNIC address blocks: 1800
AfriNIC Region origin ASes present in the Internet Routing Table: 436
AfriNIC Prefixes per ASN: 13.47
AfriNIC Region origin ASes announcing only one prefix: 130
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 22079488
Equivalent to 1 /8s, 80 /16s and 232 /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 2424 9508 894 Korea Telecom (KIX)
7545 1568 301 83 TPG Internet Pty Ltd
4755 1481 653 158 TATA Communications formerly
17974 1432 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1133 324 186 Bharti Airtel Ltd., Telemedia
9583 1047 77 490 Sify Limited
4808 1046 2142 294 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
18101 939 117 143 Reliance Infocom Ltd Internet
17488 937 162 96 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 3676 3823 258 bellsouth.net, inc.
4323 2583 1093 402 Time Warner Telecom
1785 1793 681 131 PaeTec Communications, Inc.
18566 1606 331 194 Covad Communications
6478 1547 299 72 AT&T Worldnet Services
20115 1529 1537 647 Charter Communications
19262 1488 4939 299 Verizon Global Networks
7018 1367 6835 887 AT&T WorldNet Services
11492 1318 237 64 Cable One
2386 1289 536 929 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 452 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
8551 403 353 46 Bezeq International
12479 403 577 6 Uni2 Autonomous System
8402 393 320 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 1392 259 163 TVCABLE BOGOTA
8151 1238 2702 368 UniNet S.A. de C.V.
28573 1232 965 82 NET Servicos de Comunicao S.A
6503 1174 354 73 AVANTEL, S.A.
7303 922 464 146 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
13489 492 213 104 Orbitel S.A. E.S.P.
11172 487 99 81 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 791 445 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 3676 3823 258 bellsouth.net, inc.
4323 2583 1093 402 Time Warner Telecom
4766 2424 9508 894 Korea Telecom (KIX)
1785 1793 681 131 PaeTec Communications, Inc.
18566 1606 331 194 Covad Communications
7545 1568 301 83 TPG Internet Pty Ltd
6478 1547 299 72 AT&T Worldnet Services
20115 1529 1537 647 Charter Communications
19262 1488 4939 299 Verizon Global Networks
4755 1481 653 158 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 2583 2181 Time Warner Telecom
1785 1793 1662 PaeTec Communications, Inc.
4766 2424 1530 Korea Telecom (KIX)
7545 1568 1485 TPG Internet Pty Ltd
6478 1547 1475 AT&T Worldnet Services
18566 1606 1412 Covad Communications
17974 1432 1399 PT TELEKOMUNIKASI INDONESIA
4755 1481 1323 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
31.31.24.0/21 1547 US DOD NIC Unregistered
31.185.104.0/21 8881 KomTel routing policies
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 /11:73 /12:216
/13:447 /14:766 /15:1372 /16:11562 /17:5690 /18:9396
/19:19012 /20:24704 /21:25289 /22:33543 /23:32071 /24:182966
/25:1138 /26:1348 /27:733 /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 3676 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1501 1547 AT&T Worldnet Services
4323 1393 2583 Time Warner Telecom
10620 1283 1392 TVCABLE BOGOTA
11492 1275 1318 Cable One
7011 1063 1163 Citizens Utilities
1785 1058 1793 PaeTec Communications, Inc.
6503 953 1174 AVANTEL, S.A.
22773 834 1286 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:277 2:62 4:14 5:1 8:341 12:2027
13:1 14:422 15:15 16:3 17:8 20:10
23:3 24:1548 27:638 31:2 32:60 33:4
34:2 37:1 38:716 39:1 40:101 41:2277
44:3 46:732 47:4 49:162 50:107 52:13
55:3 56:2 57:32 58:864 59:495 60:387
61:1149 62:997 63:1925 64:3874 65:2353 66:4377
67:1774 68:1076 69:2905 70:698 71:359 72:1935
73:1 74:2327 75:284 76:344 77:845 78:698
79:455 80:1093 81:818 82:514 83:465 84:644
85:1041 86:554 87:758 88:353 89:1563 90:174
91:3639 92:501 93:1041 94:1229 95:780 96:448
97:251 98:795 99:34 101:49 106:1 107:4
108:72 109:908 110:480 111:716 112:321 113:376
114:503 115:712 116:967 117:674 118:723 119:1053
120:256 121:769 122:1608 123:1041 124:1301 125:1265
128:265 129:170 130:170 131:561 132:100 133:20
134:216 135:49 136:213 137:145 138:299 139:106
140:486 141:173 142:377 143:383 144:472 145:52
146:437 147:209 148:636 149:275 150:161 151:187
152:298 153:180 154:3 155:375 156:183 157:347
158:130 159:374 160:313 161:213 162:278 163:161
164:490 165:351 166:498 167:410 168:722 169:156
170:755 171:69 172:2 173:1249 174:519 175:334
177:42 178:805 180:787 181:4 182:393 183:245
184:228 185:1 186:1051 187:862 188:919 189:1029
190:4742 192:5767 193:4787 194:3497 195:2944 196:1187
197:15 198:3571 199:3876 200:5509 201:1586 202:8331
203:8484 204:4109 205:2308 206:2646 207:3026 208:3905
209:3482 210:2686 211:1351 212:1947 213:1702 214:752
215:66 216:4871 217:1649 218:554 219:381 220:1197
221:472 222:321 223:99
End of report
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