Routing Table Report 00:00 GMT Wed 21 Sep, 2011
NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/
Analysis Summary
----------------
BGP routing table entries examined: 376605
Prefixes after maximum aggregation: 169064
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185070
Total ASes present in the Internet Routing Table: 38812
Prefixes per ASN: 9.70
Origin-only ASes present in the Internet Routing Table: 32217
Origin ASes announcing only one prefix: 15452
Transit ASes present in the Internet Routing Table: 5178
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 4606
Unregistered ASNs in the Routing Table: 756
Number of 32-bit ASNs allocated by the RIRs: 1752
Number of 32-bit ASNs visible in the Routing Table: 1417
Prefixes from 32-bit ASNs in the Routing Table: 3268
Special use prefixes present in the Routing Table: 83
Prefixes being announced from unallocated address space: 102
Number of addresses announced to Internet: 2479254423
Equivalent to 147 /8s, 198 /16s and 107 /24s
Percentage of available address space announced: 66.9
Percentage of allocated address space announced: 66.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.3
Total number of prefixes smaller than registry allocations: 155946
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 91927
Total APNIC prefixes after maximum aggregation: 29539
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 88563
Unique aggregates announced from the APNIC address blocks: 38163
APNIC Region origin ASes present in the Internet Routing Table: 4551
APNIC Prefixes per ASN: 19.46
APNIC Region origin ASes announcing only one prefix: 1260
APNIC Region transit ASes present in the Internet Routing Table: 709
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 88
Number of APNIC addresses announced to Internet: 628045056
Equivalent to 37 /8s, 111 /16s and 53 /24s
Percentage of available APNIC address space announced: 79.6
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 147002
Total ARIN prefixes after maximum aggregation: 75741
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 118758
Unique aggregates announced from the ARIN address blocks: 47944
ARIN Region origin ASes present in the Internet Routing Table: 14670
ARIN Prefixes per ASN: 8.10
ARIN Region origin ASes announcing only one prefix: 5629
ARIN Region transit ASes present in the Internet Routing Table: 1519
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804923292
Equivalent to 47 /8s, 250 /16s and 39 /24s
Percentage of available ARIN address space announced: 64.0
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: 90305
Total RIPE prefixes after maximum aggregation: 50387
RIPE Deaggregation factor: 1.79
Prefixes being announced from the RIPE address blocks: 82305
Unique aggregates announced from the RIPE address blocks: 54084
RIPE Region origin ASes present in the Internet Routing Table: 15979
RIPE Prefixes per ASN: 5.15
RIPE Region origin ASes announcing only one prefix: 7956
RIPE Region transit ASes present in the Internet Routing Table: 2508
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1006
Number of RIPE addresses announced to Internet: 489411276
Equivalent to 29 /8s, 43 /16s and 210 /24s
Percentage of available RIPE address space announced: 78.8
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: 35457
Total LACNIC prefixes after maximum aggregation: 7783
LACNIC Deaggregation factor: 4.56
Prefixes being announced from the LACNIC address blocks: 34666
Unique aggregates announced from the LACNIC address blocks: 17884
LACNIC Region origin ASes present in the Internet Routing Table: 1524
LACNIC Prefixes per ASN: 22.75
LACNIC Region origin ASes announcing only one prefix: 452
LACNIC Region transit ASes present in the Internet Routing Table: 271
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 307
Number of LACNIC addresses announced to Internet: 89147144
Equivalent to 5 /8s, 80 /16s and 71 /24s
Percentage of available LACNIC address space announced: 59.0
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: 8451
Total AfriNIC prefixes after maximum aggregation: 2000
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 6524
Unique aggregates announced from the AfriNIC address blocks: 1982
AfriNIC Region origin ASes present in the Internet Routing Table: 485
AfriNIC Prefixes per ASN: 13.45
AfriNIC Region origin ASes announcing only one prefix: 155
AfriNIC Region transit ASes present in the Internet Routing Table: 104
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27314944
Equivalent to 1 /8s, 160 /16s and 203 /24s
Percentage of available AfriNIC address space announced: 40.7
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
17974 1988 516 31 PT TELEKOMUNIKASI INDONESIA
4766 1945 11056 650 Korea Telecom (KIX)
7545 1596 303 86 TPG Internet Pty Ltd
4755 1549 634 165 Videsh Sanchar Nigam Ltd. Aut
7552 1416 1064 7 Vietel Corporation
24560 1182 337 194 Bharti Airtel Ltd.
9829 1158 989 28 BSNL National Internet Backbo
4808 1092 2117 311 CNCGROUP IP network: China169
9583 1084 80 501 Sify Limited
17488 951 188 160 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3563 3817 226 bellsouth.net, inc.
18566 1912 364 237 Covad Communications
1785 1825 680 124 AppliedTheory Corporation
7029 1722 1018 219 Windstream Communications Inc
4323 1625 1101 393 Time Warner Telecom
20115 1595 1542 634 Charter Communications
22773 1458 2907 99 Cox Communications, Inc.
30036 1423 266 679 Mediacom Communications Corp
19262 1395 4724 399 Verizon Global Networks
7018 1336 7067 874 AT&T WorldNet Services
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
286 1069 824 200 KPNQwest Backbone AS
34984 564 108 181 Tellcom Iletisim Hizmetleri
9116 540 326 31 Goldenlines main autonomous s
20940 529 172 410 Akamai Technologies European
3292 526 2081 406 TDC Tele Danmark
6830 525 1811 322 UPC Distribution Services
3320 493 8167 381 Deutsche Telekom AG
12479 472 594 8 Uni2 Autonomous System
8402 445 352 13 Corbina telecom
29049 424 31 55 AzerSat LLC.
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1679 309 156 TVCABLE BOGOTA
8151 1461 2785 358 Uninet S.A. de C.V.
28573 1328 1011 80 Types of queries are: POCs, o
7303 1156 678 170 Telecom Argentina Stet-France
14420 734 58 88 Types of queries are: POCs, o
6503 591 450 69 AVANTEL, S.A.
27947 581 56 76 Telconet S.A
22047 579 322 17 Types of queries are: POCs, o
10481 548 430 20 Prima S.A.
3816 538 232 99 COLOMBIA TELECOMUNICACIONES S
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 812 147 42 LINKdotNET AS number
8452 698 445 11 TEDATA
15475 450 74 8 Nile Online
36992 293 415 14 Etisalat MISR
3741 274 938 229 The Internet Solution
6713 242 519 14 Itissalat Al-MAGHRIB
33776 239 13 8 Starcomms Nigeria Limited
15706 219 32 6 Sudatel Internet Exchange Aut
12258 199 28 59 YEBO-AS
29571 191 17 11 Ci Telecom Autonomous system
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3563 3817 226 bellsouth.net, inc.
23456 3268 772 1764 >>UNKNOWN<<
17974 1988 516 31 PT TELEKOMUNIKASI INDONESIA
4766 1945 11056 650 Korea Telecom (KIX)
18566 1912 364 237 Covad Communications
1785 1825 680 124 AppliedTheory Corporation
7029 1722 1018 219 Windstream Communications Inc
10620 1679 309 156 TVCABLE BOGOTA
4323 1625 1101 393 Time Warner Telecom
7545 1596 303 86 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1988 1957 PT TELEKOMUNIKASI INDONESIA
1785 1825 1701 AppliedTheory Corporation
18566 1912 1675 Covad Communications
10620 1679 1523 TVCABLE BOGOTA
7545 1596 1510 TPG Internet Pty Ltd
23456 3268 1504 >>UNKNOWN<<
7029 1722 1503 Windstream Communications Inc
7552 1416 1409 Vietel Corporation
4755 1549 1384 Videsh Sanchar Nigam Ltd. Aut
22773 1458 1359 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/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 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 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
46.18.104.0/21 23456 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
Complete listing at http://thyme.rand.apnic.net/rviews/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 /9:12 /10:27 /11:81 /12:235
/13:464 /14:808 /15:1449 /16:12090 /17:6234 /18:10321
/19:20288 /20:28145 /21:27543 /22:36840 /23:35331 /24:194904
/25:76 /26:89 /27:122 /28:296 /29:105 /30:554
/31:73 /32:499
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2200 3563 bellsouth.net, inc.
18566 1868 1912 Covad Communications
10620 1574 1679 TVCABLE BOGOTA
23456 1566 3268 >>UNKNOWN<<
7029 1411 1722 Windstream Communications Inc
30036 1380 1423 Mediacom Communications Corp
11492 1115 1153 Cable One
7011 1058 1183 Citizens Utilities
1785 1053 1825 AppliedTheory Corporation
22773 947 1458 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:378 2:80 4:19 5:1 6:3 8:352
12:1959 13:1 14:543 15:13 16:3 17:6
20:10 23:35 24:1684 27:941 31:535 32:149
33:4 34:2 36:4 38:744 40:108 41:2567
42:48 44:3 46:984 47:3 49:250 50:423
52:13 54:2 55:7 56:2 57:45 58:881
59:491 60:376 61:1181 62:1097 63:1962 64:4094
65:2303 66:3997 67:1984 68:1283 69:3302 70:839
71:377 72:1889 73:1 74:2495 75:342 76:347
77:869 78:674 79:483 80:1131 81:846 82:513
83:474 84:644 85:1091 86:417 87:842 88:357
89:1558 90:265 91:4106 92:533 93:1161 94:1331
95:788 96:440 97:274 98:947 99:37 101:209
103:307 106:95 107:51 108:83 109:1025 110:672
111:783 112:321 113:444 114:565 115:696 116:919
117:699 118:899 119:1191 120:339 121:703 122:1603
123:1009 124:1359 125:1396 128:245 129:181 130:165
131:578 132:120 133:21 134:215 135:53 136:212
137:138 138:288 139:122 140:492 141:278 142:392
143:410 144:483 145:60 146:471 147:225 148:690
149:251 150:153 151:190 152:452 153:177 154:6
155:394 156:202 157:357 158:144 159:462 160:325
161:207 162:338 163:178 164:507 165:404 166:536
167:435 168:746 169:147 170:859 171:84 172:1
173:1663 174:643 175:408 176:180 177:260 178:1003
180:1073 181:30 182:627 183:219 184:379 185:1
186:1450 187:671 188:935 189:858 190:5166 192:5944
193:5024 194:3546 195:3082 196:1256 197:144 198:3598
199:4131 200:5525 201:1640 202:8567 203:8510 204:4259
205:2357 206:2740 207:2842 208:4161 209:3548 210:2719
211:1473 212:2136 213:1781 214:787 215:76 216:4931
217:1616 218:554 219:334 220:1228 221:515 222:343
223:266
End of report
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