Routing Table Report 00:00 GMT Tue 31 May, 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: 363335
Prefixes after maximum aggregation: 163529
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 177497
Total ASes present in the Internet Routing Table: 37758
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31615
Origin ASes announcing only one prefix: 15111
Transit ASes present in the Internet Routing Table: 5031
Transit-only ASes present in the Internet Routing Table: 122
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3394
Unregistered ASNs in the Routing Table: 398
Number of 32-bit ASNs allocated by the RIRs: 1397
Number of 32-bit ASNs visible in the Routing Table: 1112
Prefixes from 32-bit ASNs in the Routing Table: 2555
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2440954231
Equivalent to 145 /8s, 126 /16s and 1 /24s
Percentage of available address space announced: 65.9
Percentage of allocated address space announced: 65.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 151061
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87370
Total APNIC prefixes after maximum aggregation: 28958
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83879
Unique aggregates announced from the APNIC address blocks: 36726
APNIC Region origin ASes present in the Internet Routing Table: 4462
APNIC Prefixes per ASN: 18.80
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 686
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 618710465
Equivalent to 36 /8s, 224 /16s and 197 /24s
Percentage of available APNIC address space announced: 78.5
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: 143523
Total ARIN prefixes after maximum aggregation: 73418
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115521
Unique aggregates announced from the ARIN address blocks: 45817
ARIN Region origin ASes present in the Internet Routing Table: 14413
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5477
ARIN Region transit ASes present in the Internet Routing Table: 1464
Average ARIN Region AS path length visible: 3.6
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: 801970200
Equivalent to 47 /8s, 205 /16s and 24 /24s
Percentage of available ARIN address space announced: 63.7
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: 88243
Total RIPE prefixes after maximum aggregation: 48821
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80871
Unique aggregates announced from the RIPE address blocks: 51823
RIPE Region origin ASes present in the Internet Routing Table: 15683
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 7790
RIPE Region transit ASes present in the Internet Routing Table: 2459
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: 822
Number of RIPE addresses announced to Internet: 475130348
Equivalent to 28 /8s, 81 /16s and 233 /24s
Percentage of available RIPE address space announced: 76.5
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: 33100
Total LACNIC prefixes after maximum aggregation: 7569
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 32245
Unique aggregates announced from the LACNIC address blocks: 16880
LACNIC Region origin ASes present in the Internet Routing Table: 1461
LACNIC Prefixes per ASN: 22.07
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 225
Number of LACNIC addresses announced to Internet: 84362776
Equivalent to 5 /8s, 7 /16s and 70 /24s
Percentage of available LACNIC address space announced: 55.9
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: 8239
Total AfriNIC prefixes after maximum aggregation: 1906
AfriNIC Deaggregation factor: 4.32
Prefixes being announced from the AfriNIC address blocks: 6401
Unique aggregates announced from the AfriNIC address blocks: 1922
AfriNIC Region origin ASes present in the Internet Routing Table: 455
AfriNIC Prefixes per ASN: 14.07
AfriNIC Region origin ASes announcing only one prefix: 140
AfriNIC Region transit ASes present in the Internet Routing Table: 104
Average AfriNIC Region AS path length visible: 4.1
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23550208
Equivalent to 1 /8s, 103 /16s and 89 /24s
Percentage of available AfriNIC address space announced: 35.1
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 1903 9508 619 Korea Telecom (KIX)
17974 1852 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1539 301 87 TPG Internet Pty Ltd
4755 1472 634 168 Videsh Sanchar Nigam Ltd. Aut
24560 1155 337 187 Bharti Airtel Ltd.
7552 1140 1064 7 Vietel Corporation
9583 1074 79 512 Sify Limited
9829 1040 876 52 BSNL National Internet Backbo
17488 943 170 104 Hathway IP Over Cable Interne
18101 931 116 140 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 3644 3822 255 bellsouth.net, inc.
4323 1967 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
1785 1790 681 124 AppliedTheory Corporation
6478 1704 317 50 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
19262 1490 4919 308 Verizon Global Networks
7018 1373 7101 896 AT&T WorldNet Services
22773 1335 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One
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 1011 798 175 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
3292 517 2078 398 TDC Tele Danmark
6830 517 1780 319 UPC Distribution Services
34984 515 106 178 Tellcom Iletisim Hizmetleri
20940 463 135 355 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 428 577 6 Uni2 Autonomous System
3320 426 8152 371 Deutsche Telekom AG
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 1503 275 158 TVCABLE BOGOTA
8151 1375 2691 360 Uninet S.A. de C.V.
28573 1321 991 88 Types of queries are: POCs, o
7303 958 504 152 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 671 54 89 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 525 228 99 COLOMBIA TELECOMUNICACIONES S
7738 516 986 31 Telecomunicacoes da Bahia S.A
13489 516 262 123 Orbitel S.A. E.S.P.
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
8452 870 445 11 TEDATA
24863 784 147 37 LINKdotNET AS number
15475 544 90 8 Nile Online
36992 306 399 15 Etisalat MISR
16637 292 441 87 Johnnic e-Ventures
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 162 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 3644 3822 255 bellsouth.net, inc.
23456 2555 633 1381 >>UNKNOWN<<
4323 1967 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
4766 1903 9508 619 Korea Telecom (KIX)
17974 1852 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 124 AppliedTheory Corporation
6478 1704 317 50 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
7545 1539 301 87 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 1852 1819 PT TELEKOMUNIKASI INDONESIA
1785 1790 1666 AppliedTheory Corporation
6478 1704 1654 AT&T Worldnet Services
18566 1919 1649 Covad Communications
4323 1967 1569 Time Warner Telecom
7545 1539 1452 TPG Internet Pty Ltd
10620 1503 1345 TVCABLE BOGOTA
4755 1472 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1903 1284 Korea Telecom (KIX)
11492 1280 1265 Cable One
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 1239 Sprint
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
27.0.128.0/17 7514 Media Exchange, Inc.
31.131.32.0/21 12700 SC-VEKTOR-AS
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
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 /8:21 /9:12 /10:28 /11:81 /12:227
/13:461 /14:804 /15:1426 /16:11913 /17:6085 /18:10071
/19:19875 /20:26436 /21:26350 /22:34564 /23:33679 /24:188539
/25:357 /26:340 /27:169 /28:290 /29:235 /30:667
/31:68 /32:637
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 bellsouth.net, inc.
18566 1876 1919 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1393 1503 TVCABLE BOGOTA
23456 1248 2555 >>UNKNOWN<<
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1790 AppliedTheory Corporation
4323 882 1967 Time Warner Telecom
286 872 1011 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:280 2:63 4:20 5:1 6:3 8:354
12:1984 13:1 14:463 15:15 16:3 17:8
20:10 23:7 24:1659 27:783 31:363 32:126
33:4 34:2 37:1 38:738 40:101 41:2548
42:6 44:3 46:932 47:3 49:198 50:422
52:13 54:2 55:5 56:2 57:39 58:846
59:482 60:387 61:1237 62:1059 63:1951 64:3980
65:2295 66:4175 67:1899 68:1262 69:3098 70:752
71:357 72:1927 73:3 74:2411 75:317 76:349
77:908 78:707 79:477 80:1097 81:848 82:512
83:459 84:686 85:1074 86:609 87:781 88:338
89:1575 90:205 91:3808 92:516 93:1082 94:1310
95:824 96:506 97:250 98:859 99:35 101:57
103:33 106:1 107:7 108:85 109:957 110:601
111:706 112:304 113:402 114:536 115:675 116:970
117:692 118:831 119:1132 120:311 121:673 122:1624
123:999 124:1265 125:1228 128:263 129:176 130:164
131:571 132:109 133:19 134:214 135:48 136:206
137:143 138:301 139:122 140:482 141:239 142:408
143:400 144:484 145:53 146:448 147:220 148:588
149:242 150:168 151:186 152:328 153:178 154:3
155:397 156:194 157:324 158:135 159:381 160:314
161:207 162:282 163:164 164:500 165:372 166:515
167:428 168:731 169:156 170:804 171:77 172:1
173:1574 174:553 175:371 176:129 177:148 178:995
180:852 181:17 182:455 183:210 184:364 185:1
186:1181 187:777 188:855 189:898 190:4824 192:5873
193:4920 194:3553 195:3119 196:1231 197:19 198:3606
199:3897 200:5544 201:1495 202:8326 203:8422 204:4178
205:2324 206:2752 207:2879 208:3983 209:3483 210:2744
211:1431 212:2041 213:1789 214:732 215:72 216:4928
217:1621 218:570 219:366 220:1206 221:492 222:342
223:148
End of report
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