Routing Table Report 00:00 GMT Thu 20 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: 381900
Prefixes after maximum aggregation: 170879
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185272
Total ASes present in the Internet Routing Table: 39139
Prefixes per ASN: 9.76
Origin-only ASes present in the Internet Routing Table: 32360
Origin ASes announcing only one prefix: 15519
Transit ASes present in the Internet Routing Table: 5248
Transit-only ASes present in the Internet Routing Table: 142
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: 5003
Unregistered ASNs in the Routing Table: 831
Number of 32-bit ASNs allocated by the RIRs: 1870
Number of 32-bit ASNs visible in the Routing Table: 1531
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: 90
Number of addresses announced to Internet: 2485348106
Equivalent to 148 /8s, 35 /16s and 103 /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: 159452
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92591
Total APNIC prefixes after maximum aggregation: 29782
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 89151
Unique aggregates announced from the APNIC address blocks: 37948
APNIC Region origin ASes present in the Internet Routing Table: 4570
APNIC Prefixes per ASN: 19.51
APNIC Region origin ASes announcing only one prefix: 1274
APNIC Region transit ASes present in the Internet Routing Table: 719
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 94
Number of APNIC addresses announced to Internet: 628786432
Equivalent to 37 /8s, 122 /16s and 133 /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: 148504
Total ARIN prefixes after maximum aggregation: 76511
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120192
Unique aggregates announced from the ARIN address blocks: 47831
ARIN Region origin ASes present in the Internet Routing Table: 14760
ARIN Prefixes per ASN: 8.14
ARIN Region origin ASes announcing only one prefix: 5666
ARIN Region transit ASes present in the Internet Routing Table: 1531
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: 804792088
Equivalent to 47 /8s, 248 /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: 92801
Total RIPE prefixes after maximum aggregation: 50785
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 84620
Unique aggregates announced from the RIPE address blocks: 54118
RIPE Region origin ASes present in the Internet Routing Table: 16061
RIPE Prefixes per ASN: 5.27
RIPE Region origin ASes announcing only one prefix: 7974
RIPE Region transit ASes present in the Internet Routing Table: 2538
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1074
Number of RIPE addresses announced to Internet: 491281604
Equivalent to 29 /8s, 72 /16s and 92 /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: 35762
Total LACNIC prefixes after maximum aggregation: 7929
LACNIC Deaggregation factor: 4.51
Prefixes being announced from the LACNIC address blocks: 35088
Unique aggregates announced from the LACNIC address blocks: 17964
LACNIC Region origin ASes present in the Internet Routing Table: 1541
LACNIC Prefixes per ASN: 22.77
LACNIC Region origin ASes announcing only one prefix: 452
LACNIC Region transit ASes present in the Internet Routing Table: 274
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: 347
Number of LACNIC addresses announced to Internet: 91239176
Equivalent to 5 /8s, 112 /16s and 51 /24s
Percentage of available LACNIC address space announced: 60.4
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: 8538
Total AfriNIC prefixes after maximum aggregation: 2026
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6601
Unique aggregates announced from the AfriNIC address blocks: 1974
AfriNIC Region origin ASes present in the Internet Routing Table: 489
AfriNIC Prefixes per ASN: 13.50
AfriNIC Region origin ASes announcing only one prefix: 153
AfriNIC Region transit ASes present in the Internet Routing Table: 108
Average AfriNIC Region AS path length visible: 4.0
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: 27832320
Equivalent to 1 /8s, 168 /16s and 176 /24s
Percentage of available AfriNIC address space announced: 41.5
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 1904 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1607 303 86 TPG Internet Pty Ltd
4755 1536 635 173 Videsh Sanchar Nigam Ltd. Aut
7552 1389 1064 8 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1086 80 502 Sify Limited
4808 1037 2076 303 CNCGROUP IP network: China169
24560 973 341 224 Bharti Airtel Ltd.
18101 953 166 149 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 3547 3815 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
1785 1839 680 123 AppliedTheory Corporation
4323 1627 1099 391 Time Warner Telecom
20115 1589 1544 625 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1393 251 671 Mediacom Communications Corp
7018 1342 7095 851 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
8402 1498 352 13 Corbina telecom
286 1091 827 211 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 583 108 179 Tellcom Iletisim Hizmetleri
20940 549 184 421 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 532 2080 409 TDC Tele Danmark
3320 502 8169 382 Deutsche Telekom AG
12479 482 593 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 1685 311 157 TVCABLE BOGOTA
8151 1464 2860 347 Uninet S.A. de C.V.
28573 1431 1032 69 Types of queries are: POCs, o
7303 1165 684 176 Telecom Argentina Stet-France
27947 593 72 79 Telconet S.A
6503 582 450 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 799 146 34 LINKdotNET AS number
8452 647 446 12 TEDATA
15475 443 74 8 Nile Online
36992 300 415 21 Etisalat MISR
3741 279 938 230 The Internet Solution
6713 242 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 218 18 14 Ci Telecom Autonomous system
33776 207 13 14 Starcomms Nigeria Limited
12258 197 28 58 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 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
4766 1938 11103 657 Korea Telecom (KIX)
17974 1904 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1839 680 123 AppliedTheory Corporation
10620 1685 311 157 TVCABLE BOGOTA
4323 1627 1099 391 Time Warner Telecom
7545 1607 303 86 TPG Internet Pty Ltd
20115 1589 1544 625 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 2291 2081 Windstream Communications Inc
18566 2098 1921 Covad Communications
17974 1904 1871 PT TELEKOMUNIKASI INDONESIA
1785 1839 1716 AppliedTheory Corporation
10620 1685 1528 TVCABLE BOGOTA
7545 1607 1521 TPG Internet Pty Ltd
8402 1498 1485 Corbina telecom
7552 1389 1381 Vietel Corporation
4755 1536 1363 Videsh Sanchar Nigam Ltd. Aut
22773 1462 1362 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
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.21.192.0/20 11610 Internet Nebraska
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 /14:812 /15:1456 /16:12124 /17:6292 /18:10387
/19:20509 /20:28548 /21:27752 /22:37352 /23:35613 /24:198551
/25:67 /26:85 /27:116 /28:283 /29:108 /30:478
/31:51 /32:477
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2185 3547 bellsouth.net, inc.
18566 2047 2098 Covad Communications
7029 1948 2291 Windstream Communications Inc
10620 1580 1685 TVCABLE BOGOTA
8402 1475 1498 Corbina telecom
30036 1355 1393 Mediacom Communications Corp
11492 1118 1156 Cable One
1785 1057 1839 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
22773 950 1462 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:412 2:486 4:19 5:1 6:3 8:363
12:1960 13:1 14:543 15:11 16:3 17:7
20:9 23:58 24:1682 27:966 31:603 32:150
33:4 34:2 36:4 38:756 39:1 40:110
41:2666 42:54 44:3 46:1004 47:3 49:296
50:438 52:13 55:6 56:2 57:47 58:888
59:491 60:364 61:1186 62:1102 63:1954 64:4105
65:2310 66:4312 67:1988 68:1328 69:3347 70:937
71:376 72:1893 73:1 74:2637 75:399 76:354
77:886 78:868 79:479 80:1147 81:828 82:514
83:531 84:628 85:1125 86:411 87:897 88:360
89:1600 90:269 91:4222 92:528 93:1544 94:1306
95:1087 96:441 97:283 98:923 99:37 101:216
103:372 106:70 107:72 108:74 109:1069 110:675
111:788 112:332 113:486 114:615 115:704 116:905
117:712 118:916 119:1238 120:339 121:712 122:1572
123:1023 124:1362 125:1385 128:258 129:185 130:166
131:594 132:144 133:21 134:220 135:54 136:213
137:140 138:286 139:132 140:488 141:298 142:386
143:442 144:494 145:64 146:471 147:228 148:695
149:267 150:166 151:192 152:448 153:178 154:7
155:385 156:206 157:362 158:152 159:479 160:324
161:214 162:340 163:174 164:509 165:385 166:536
167:439 168:743 169:146 170:872 171:86 172:4
173:1709 174:685 175:437 176:285 177:337 178:1065
180:1097 181:36 182:648 183:218 184:375 185:1
186:1282 187:706 188:940 189:873 190:5121 192:5940
193:5050 194:3582 195:3133 196:1260 197:164 198:3633
199:4179 200:5515 201:1660 202:8565 203:8509 204:4299
205:2372 206:2705 207:2833 208:4076 209:3627 210:2725
211:1462 212:2106 213:1745 214:783 215:91 216:5015
217:1610 218:569 219:341 220:1244 221:515 222:348
223:278
End of report
