Routing Table Report 00:00 GMT Fri 14 Oct, 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: 380237
Prefixes after maximum aggregation: 170675
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185029
Total ASes present in the Internet Routing Table: 39051
Prefixes per ASN: 9.74
Origin-only ASes present in the Internet Routing Table: 32398
Origin ASes announcing only one prefix: 15464
Transit ASes present in the Internet Routing Table: 5139
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 4895
Unregistered ASNs in the Routing Table: 798
Number of 32-bit ASNs allocated by the RIRs: 1851
Number of 32-bit ASNs visible in the Routing Table: 1514
Prefixes from 32-bit ASNs in the Routing Table: 3448
Special use prefixes present in the Routing Table: 90
Prefixes being announced from unallocated address space: 91
Number of addresses announced to Internet: 2484186642
Equivalent to 148 /8s, 17 /16s and 174 /24s
Percentage of available address space announced: 67.0
Percentage of allocated address space announced: 67.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.5
Total number of prefixes smaller than registry allocations: 157948
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92933
Total APNIC prefixes after maximum aggregation: 30000
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 89375
Unique aggregates announced from the APNIC address blocks: 37911
APNIC Region origin ASes present in the Internet Routing Table: 4564
APNIC Prefixes per ASN: 19.58
APNIC Region origin ASes announcing only one prefix: 1264
APNIC Region transit ASes present in the Internet Routing Table: 695
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 17
Number of APNIC region 32-bit ASNs visible in the Routing Table: 93
Number of APNIC addresses announced to Internet: 628480768
Equivalent to 37 /8s, 117 /16s and 219 /24s
Percentage of available APNIC address space announced: 79.7
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: 147355
Total ARIN prefixes after maximum aggregation: 76305
ARIN Deaggregation factor: 1.93
Prefixes being announced from the ARIN address blocks: 119261
Unique aggregates announced from the ARIN address blocks: 47995
ARIN Region origin ASes present in the Internet Routing Table: 14737
ARIN Prefixes per ASN: 8.09
ARIN Region origin ASes announcing only one prefix: 5652
ARIN Region transit ASes present in the Internet Routing Table: 1526
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804535832
Equivalent to 47 /8s, 244 /16s and 62 /24s
Percentage of available ARIN address space announced: 63.9
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: 92364
Total RIPE prefixes after maximum aggregation: 50649
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 84140
Unique aggregates announced from the RIPE address blocks: 53900
RIPE Region origin ASes present in the Internet Routing Table: 16032
RIPE Prefixes per ASN: 5.25
RIPE Region origin ASes announcing only one prefix: 7948
RIPE Region transit ASes present in the Internet Routing Table: 2469
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1065
Number of RIPE addresses announced to Internet: 491177164
Equivalent to 29 /8s, 70 /16s and 196 /24s
Percentage of available RIPE address space announced: 79.1
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: 35557
Total LACNIC prefixes after maximum aggregation: 7885
LACNIC Deaggregation factor: 4.51
Prefixes being announced from the LACNIC address blocks: 34804
Unique aggregates announced from the LACNIC address blocks: 17864
LACNIC Region origin ASes present in the Internet Routing Table: 1533
LACNIC Prefixes per ASN: 22.70
LACNIC Region origin ASes announcing only one prefix: 446
LACNIC Region transit ASes present in the Internet Routing Table: 272
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 340
Number of LACNIC addresses announced to Internet: 90733064
Equivalent to 5 /8s, 104 /16s and 122 /24s
Percentage of available LACNIC address space announced: 60.1
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: 8386
Total AfriNIC prefixes after maximum aggregation: 2020
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 6457
Unique aggregates announced from the AfriNIC address blocks: 1977
AfriNIC Region origin ASes present in the Internet Routing Table: 490
AfriNIC Prefixes per ASN: 13.18
AfriNIC Region origin ASes announcing only one prefix: 154
AfriNIC Region transit ASes present in the Internet Routing Table: 109
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: 27815680
Equivalent to 1 /8s, 168 /16s and 111 /24s
Percentage of available AfriNIC address space announced: 41.4
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 1935 11071 654 Korea Telecom (KIX)
17974 1860 512 38 PT TELEKOMUNIKASI INDONESIA
7545 1610 303 87 TPG Internet Pty Ltd
4755 1537 639 171 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 7 Vietel Corporation
9829 1164 989 28 BSNL National Internet Backbo
9583 1093 80 505 Sify Limited
4808 1061 2092 304 CNCGROUP IP network: China169
24560 1057 343 225 Bharti Airtel Ltd.
18101 954 165 143 Reliance Infocom Ltd Internet
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 3547 3815 221 bellsouth.net, inc.
7029 2153 1036 223 Windstream Communications Inc
18566 1991 370 230 Covad Communications
1785 1837 680 122 AppliedTheory Corporation
4323 1631 1099 392 Time Warner Telecom
20115 1588 1541 633 Charter Communications
22773 1461 2907 100 Cox Communications, Inc.
30036 1384 250 675 Mediacom Communications Corp
7018 1338 7049 875 AT&T WorldNet Services
2386 1211 498 874 AT&T Data Communications Serv
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
8402 1461 352 13 Corbina telecom
286 1060 806 187 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 582 108 180 Tellcom Iletisim Hizmetleri
20940 555 188 426 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 533 2082 410 TDC Tele Danmark
3320 502 8169 384 Deutsche Telekom AG
12479 483 593 7 Uni2 Autonomous System
8866 459 133 26 Bulgarian Telecommunication C
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 1680 310 154 TVCABLE BOGOTA
8151 1468 2826 349 Uninet S.A. de C.V.
28573 1364 1015 68 Types of queries are: POCs, o
7303 1164 683 175 Telecom Argentina Stet-France
27947 589 72 79 Telconet S.A
6503 585 450 71 AVANTEL, S.A.
22047 580 322 17 Types of queries are: POCs, o
7738 553 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 541 233 96 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 800 146 34 LINKdotNET AS number
8452 504 446 12 TEDATA
15475 444 74 8 Nile Online
36992 298 415 19 Etisalat MISR
3741 278 938 230 The Internet Solution
15706 244 32 6 Sudatel Internet Exchange Aut
6713 242 519 14 Itissalat Al-MAGHRIB
29571 217 17 13 Ci Telecom Autonomous system
33776 207 13 14 Starcomms Nigeria Limited
12258 199 28 59 YEBO-AS
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 3547 3815 221 bellsouth.net, inc.
7029 2153 1036 223 Windstream Communications Inc
18566 1991 370 230 Covad Communications
4766 1935 11071 654 Korea Telecom (KIX)
17974 1860 512 38 PT TELEKOMUNIKASI INDONESIA
1785 1837 680 122 AppliedTheory Corporation
10620 1680 310 154 TVCABLE BOGOTA
4323 1631 1099 392 Time Warner Telecom
7545 1610 303 87 TPG Internet Pty Ltd
20115 1588 1541 633 Charter Communications
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 2153 1930 Windstream Communications Inc
17974 1860 1822 PT TELEKOMUNIKASI INDONESIA
18566 1991 1761 Covad Communications
1785 1837 1715 AppliedTheory Corporation
10620 1680 1526 TVCABLE BOGOTA
7545 1610 1523 TPG Internet Pty Ltd
8402 1461 1448 Corbina telecom
7552 1393 1386 Vietel Corporation
4755 1537 1366 Videsh Sanchar Nigam Ltd. Aut
22773 1461 1361 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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 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<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 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 /8:20 /9:12 /10:27 /11:81 /12:235
/13:464 /14:815 /15:1461 /16:12143 /17:6278 /18:10450
/19:20464 /20:28421 /21:27695 /22:37220 /23:35494 /24:197296
/25:67 /26:85 /27:113 /28:282 /29:106 /30:478
/31:53 /32:477
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2186 3547 bellsouth.net, inc.
18566 1947 1991 Covad Communications
7029 1826 2153 Windstream Communications Inc
10620 1575 1680 TVCABLE BOGOTA
8402 1438 1461 Corbina telecom
30036 1346 1384 Mediacom Communications Corp
11492 1115 1153 Cable One
1785 1056 1837 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
22773 949 1461 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:392 2:481 4:19 5:1 6:3 8:360
12:1955 13:1 14:541 15:11 16:3 17:7
20:9 23:57 24:1689 27:962 31:581 32:150
33:4 34:2 36:4 38:758 39:1 40:108
41:2547 42:51 44:3 46:990 47:3 49:268
50:447 52:13 55:5 56:2 57:47 58:896
59:492 60:367 61:1128 62:1101 63:1948 64:4104
65:2308 66:4190 67:1995 68:1312 69:3337 70:873
71:266 72:1845 73:1 74:2525 75:380 76:348
77:886 78:869 79:482 80:1120 81:830 82:514
83:540 84:643 85:1119 86:405 87:878 88:359
89:1610 90:269 91:4182 92:529 93:1391 94:1305
95:1045 96:392 97:282 98:922 99:37 101:214
103:358 106:70 107:65 108:42 109:1064 110:669
111:795 112:326 113:484 114:580 115:697 116:906
117:714 118:907 119:1239 120:336 121:708 122:1573
123:1029 124:1363 125:1383 128:256 129:180 130:167
131:588 132:121 133:21 134:219 135:54 136:213
137:139 138:289 139:151 140:493 141:294 142:390
143:433 144:494 145:64 146:473 147:226 148:687
149:258 150:155 151:193 152:448 153:178 154:7
155:387 156:208 157:361 158:151 159:468 160:324
161:214 162:341 163:181 164:509 165:382 166:537
167:435 168:741 169:146 170:872 171:86 172:4
173:1705 174:673 175:432 176:281 177:322 178:1052
180:1120 181:36 182:670 183:214 184:371 185:1
186:1271 187:674 188:932 189:844 190:5097 192:5962
193:5038 194:3566 195:3123 196:1242 197:185 198:3642
199:4167 200:5505 201:1658 202:8563 203:8572 204:4296
205:2375 206:2697 207:2826 208:4070 209:3617 210:2800
211:1463 212:2119 213:1777 214:787 215:90 216:4995
217:1620 218:566 219:337 220:1243 221:515 222:345
223:280
End of report
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