Routing Table Report 00:00 GMT Fri 21 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: 383830
Prefixes after maximum aggregation: 170961
Deaggregation factor: 2.25
Unique aggregates announced to Internet: 185497
Total ASes present in the Internet Routing Table: 39157
Prefixes per ASN: 9.80
Origin-only ASes present in the Internet Routing Table: 32352
Origin ASes announcing only one prefix: 15532
Transit ASes present in the Internet Routing Table: 5270
Transit-only ASes present in the Internet Routing Table: 140
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 33
Max AS path prepend of ASN (51310) 25
Prefixes from unregistered ASNs in the Routing Table: 5012
Unregistered ASNs in the Routing Table: 836
Number of 32-bit ASNs allocated by the RIRs: 1874
Number of 32-bit ASNs visible in the Routing Table: 1535
Prefixes from 32-bit ASNs in the Routing Table: 3505
Special use prefixes present in the Routing Table: 90
Prefixes being announced from unallocated address space: 94
Number of addresses announced to Internet: 2486139402
Equivalent to 148 /8s, 47 /16s and 122 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
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: 161158
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92552
Total APNIC prefixes after maximum aggregation: 29768
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 89113
Unique aggregates announced from the APNIC address blocks: 37945
APNIC Region origin ASes present in the Internet Routing Table: 4570
APNIC Prefixes per ASN: 19.50
APNIC Region origin ASes announcing only one prefix: 1274
APNIC Region transit ASes present in the Internet Routing Table: 720
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 95
Number of APNIC addresses announced to Internet: 628915456
Equivalent to 37 /8s, 124 /16s and 125 /24s
Percentage of available APNIC address space announced: 79.8
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: 148447
Total ARIN prefixes after maximum aggregation: 76531
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120141
Unique aggregates announced from the ARIN address blocks: 47870
ARIN Region origin ASes present in the Internet Routing Table: 14764
ARIN Prefixes per ASN: 8.14
ARIN Region origin ASes announcing only one prefix: 5669
ARIN Region transit ASes present in the Internet Routing Table: 1535
Average ARIN Region AS path length visible: 3.7
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: 804830488
Equivalent to 47 /8s, 248 /16s and 189 /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: 94749
Total RIPE prefixes after maximum aggregation: 50841
RIPE Deaggregation factor: 1.86
Prefixes being announced from the RIPE address blocks: 86543
Unique aggregates announced from the RIPE address blocks: 54180
RIPE Region origin ASes present in the Internet Routing Table: 16063
RIPE Prefixes per ASN: 5.39
RIPE Region origin ASes announcing only one prefix: 7975
RIPE Region transit ASes present in the Internet Routing Table: 2548
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1075
Number of RIPE addresses announced to Internet: 491409092
Equivalent to 29 /8s, 74 /16s and 78 /24s
Percentage of available RIPE address space announced: 79.2
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: 35840
Total LACNIC prefixes after maximum aggregation: 7948
LACNIC Deaggregation factor: 4.51
Prefixes being announced from the LACNIC address blocks: 35168
Unique aggregates announced from the LACNIC address blocks: 18061
LACNIC Region origin ASes present in the Internet Routing Table: 1548
LACNIC Prefixes per ASN: 22.72
LACNIC Region origin ASes announcing only one prefix: 455
LACNIC Region transit ASes present in the Internet Routing Table: 276
Average LACNIC Region AS path length visible: 4.3
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 349
Number of LACNIC addresses announced to Internet: 91679240
Equivalent to 5 /8s, 118 /16s and 234 /24s
Percentage of available LACNIC address space announced: 60.7
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: 8543
Total AfriNIC prefixes after maximum aggregation: 2027
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6600
Unique aggregates announced from the AfriNIC address blocks: 2003
AfriNIC Region origin ASes present in the Internet Routing Table: 492
AfriNIC Prefixes per ASN: 13.41
AfriNIC Region origin ASes announcing only one prefix: 159
AfriNIC Region transit ASes present in the Internet Routing Table: 109
Average AfriNIC Region AS path length visible: 4.1
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27816192
Equivalent to 1 /8s, 168 /16s and 113 /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 1938 11103 657 Korea Telecom (KIX)
17974 1881 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1608 303 86 TPG Internet Pty Ltd
4755 1537 635 174 Videsh Sanchar Nigam Ltd. Aut
7552 1389 1064 8 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1088 80 503 Sify Limited
4808 1037 2076 304 CNCGROUP IP network: China169
24560 967 343 220 Bharti Airtel Ltd.
18101 951 166 149 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 3546 3815 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
1785 1840 680 123 AppliedTheory Corporation
4323 1624 1099 390 Time Warner Telecom
20115 1590 1545 621 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1393 251 671 Mediacom Communications Corp
7018 1341 7092 854 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
3352 2211 2317 51 Internet Access Network of TD
8402 1477 352 13 Corbina telecom
286 1102 827 211 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 583 108 179 Tellcom Iletisim Hizmetleri
20940 555 186 426 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 531 2080 408 TDC Tele Danmark
3320 503 8169 383 Deutsche Telekom AG
12479 482 593 7 Uni2 Autonomous System
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 1694 313 155 TVCABLE BOGOTA
8151 1464 2876 346 Uninet S.A. de C.V.
28573 1433 1032 69 Types of queries are: POCs, o
7303 1229 747 177 Telecom Argentina Stet-France
27947 601 72 79 Telconet S.A
6503 581 450 71 AVANTEL, S.A.
22047 580 322 17 Types of queries are: POCs, o
7738 552 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 642 446 12 TEDATA
15475 443 74 8 Nile Online
36992 297 415 21 Etisalat MISR
3741 278 938 229 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 218 18 14 Ci Telecom Autonomous system
12258 197 28 58 YEBO-AS
33776 197 12 16 Starcomms Nigeria Limited
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 3546 3815 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
3352 2211 2317 51 Internet Access Network of TD
18566 2098 383 177 Covad Communications
4766 1938 11103 657 Korea Telecom (KIX)
17974 1881 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1840 680 123 AppliedTheory Corporation
10620 1694 313 155 TVCABLE BOGOTA
4323 1624 1099 390 Time Warner Telecom
7545 1608 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
3352 2211 2160 Internet Access Network of TD
7029 2291 2081 Windstream Communications Inc
18566 2098 1921 Covad Communications
17974 1881 1848 PT TELEKOMUNIKASI INDONESIA
1785 1840 1717 AppliedTheory Corporation
10620 1694 1539 TVCABLE BOGOTA
7545 1608 1522 TPG Internet Pty Ltd
8402 1477 1464 Corbina telecom
7552 1389 1381 Vietel Corporation
28573 1433 1364 Types of queries are: POCs, o
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 37125 Layer3 Limited
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 /14:813 /15:1456 /16:12126 /17:6296 /18:10384
/19:20507 /20:28605 /21:27973 /22:37654 /23:36323 /24:199170
/25:67 /26:85 /27:116 /28:285 /29:110 /30:486
/31:54 /32:481
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2184 3546 bellsouth.net, inc.
18566 2047 2098 Covad Communications
7029 1948 2291 Windstream Communications Inc
3352 1757 2211 Internet Access Network of TD
10620 1589 1694 TVCABLE BOGOTA
8402 1454 1477 Corbina telecom
30036 1355 1393 Mediacom Communications Corp
11492 1111 1149 Cable One
1785 1057 1840 AppliedTheory Corporation
7011 1047 1165 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:409 2:483 4:19 5:1 6:3 8:362
12:1961 13:1 14:543 15:11 16:3 17:7
20:9 23:58 24:1681 27:964 31:604 32:150
33:4 34:2 36:4 38:758 39:1 40:110
41:2675 42:54 44:3 46:1002 47:3 49:296
50:440 52:13 55:6 56:2 57:46 58:887
59:493 60:364 61:1184 62:1095 63:1956 64:4097
65:2309 66:4306 67:2008 68:1328 69:3349 70:938
71:376 72:1873 73:1 74:2625 75:399 76:328
77:879 78:863 79:483 80:1590 81:945 82:512
83:580 84:627 85:1126 86:412 87:889 88:424
89:1617 90:269 91:4221 92:495 93:1537 94:1314
95:1078 96:441 97:283 98:927 99:37 101:216
103:381 106:70 107:72 108:76 109:1068 110:674
111:789 112:329 113:485 114:614 115:706 116:909
117:711 118:913 119:1241 120:340 121:712 122:1569
123:1023 124:1357 125:1384 128:258 129:185 130:166
131:593 132:145 133:21 134:220 135:54 136:213
137:140 138:284 139:132 140:488 141:298 142:390
143:440 144:495 145:64 146:474 147:225 148:695
149:267 150:166 151:192 152:449 153:178 154:7
155:385 156:206 157:362 158:152 159:479 160:324
161:214 162:340 163:174 164:509 165:386 166:536
167:438 168:742 169:147 170:872 171:86 172:4
173:1712 174:689 175:427 176:274 177:338 178:1068
180:1095 181:36 182:649 183:217 184:381 185:1
186:1299 187:699 188:940 189:873 190:5123 192:5943
193:5047 194:3582 195:3132 196:1262 197:152 198:3632
199:4181 200:5487 201:1651 202:8571 203:8514 204:4297
205:2368 206:2705 207:2835 208:4064 209:3627 210:2725
211:1461 212:2128 213:1779 214:786 215:96 216:5022
217:1620 218:568 219:343 220:1245 221:515 222:346
223:278
End of report