Routing Table Report 00:00 GMT Mon 16 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: 361612
Prefixes after maximum aggregation: 163057
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176288
Total ASes present in the Internet Routing Table: 37581
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31428
Origin ASes announcing only one prefix: 15044
Transit ASes present in the Internet Routing Table: 5081
Transit-only ASes present in the Internet Routing Table: 128
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3188
Unregistered ASNs in the Routing Table: 350
Number of 32-bit ASNs allocated by the RIRs: 1357
Number of 32-bit ASNs visible in the Routing Table: 1072
Prefixes from 32-bit ASNs in the Routing Table: 2433
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 152
Number of addresses announced to Internet: 2426905159
Equivalent to 144 /8s, 167 /16s and 162 /24s
Percentage of available address space announced: 65.5
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.8
Total number of prefixes smaller than registry allocations: 149946
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87479
Total APNIC prefixes after maximum aggregation: 28894
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 83913
Unique aggregates announced from the APNIC address blocks: 36644
APNIC Region origin ASes present in the Internet Routing Table: 4427
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 695
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614549697
Equivalent to 36 /8s, 161 /16s and 72 /24s
Percentage of available APNIC address space announced: 77.9
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: 143192
Total ARIN prefixes after maximum aggregation: 73498
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115155
Unique aggregates announced from the ARIN address blocks: 45416
ARIN Region origin ASes present in the Internet Routing Table: 14381
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5476
ARIN Region transit ASes present in the Internet Routing Table: 1467
Average ARIN Region AS path length visible: 4.0
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: 800091416
Equivalent to 47 /8s, 176 /16s and 109 /24s
Percentage of available ARIN address space announced: 63.6
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: 87504
Total RIPE prefixes after maximum aggregation: 48532
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80196
Unique aggregates announced from the RIPE address blocks: 51326
RIPE Region origin ASes present in the Internet Routing Table: 15623
RIPE Prefixes per ASN: 5.13
RIPE Region origin ASes announcing only one prefix: 7761
RIPE Region transit ASes present in the Internet Routing Table: 2480
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: 797
Number of RIPE addresses announced to Internet: 469441484
Equivalent to 27 /8s, 251 /16s and 27 /24s
Percentage of available RIPE address space announced: 75.6
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: 32860
Total LACNIC prefixes after maximum aggregation: 7525
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31878
Unique aggregates announced from the LACNIC address blocks: 16703
LACNIC Region origin ASes present in the Internet Routing Table: 1451
LACNIC Prefixes per ASN: 21.97
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 266
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 212
Number of LACNIC addresses announced to Internet: 83407112
Equivalent to 4 /8s, 248 /16s and 177 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7838
Total AfriNIC prefixes after maximum aggregation: 1870
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6194
Unique aggregates announced from the AfriNIC address blocks: 1915
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.83
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 23122176
Equivalent to 1 /8s, 96 /16s and 209 /24s
Percentage of available AfriNIC address space announced: 34.5
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 1892 9501 613 Korea Telecom (KIX)
17974 1812 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1554 301 86 TPG Internet Pty Ltd
4755 1463 374 165 Videsh Sanchar Nigam Ltd. Aut
24560 1149 336 184 Bharti Airtel Ltd.
7552 1105 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 958 2023 278 CNCGROUP IP network: China169
17488 951 165 103 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 3646 3822 256 bellsouth.net, inc.
4323 1977 1097 397 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1777 681 125 AppliedTheory Corporation
6478 1679 314 51 AT&T Worldnet Services
20115 1588 1543 632 Charter Communications
19262 1500 4949 300 Verizon Global Networks
7018 1365 6927 897 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
11492 1279 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 1027 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 516 1998 391 TDC Tele Danmark
34984 512 106 182 Tellcom Iletisim Hizmetleri
20940 453 132 346 Akamai Technologies European
8866 443 134 26 Bulgarian Telecommunication C
29049 442 32 44 AzerSat LLC.
12479 428 577 6 Uni2 Autonomous System
3320 419 7608 366 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 1477 272 152 TVCABLE BOGOTA
8151 1367 2683 358 Uninet S.A. de C.V.
28573 1313 990 86 Types of queries are: POCs, o
7303 930 470 151 Telecom Argentina Stet-France
6503 735 354 74 AVANTEL, S.A.
14420 667 54 91 Types of queries are: POCs, o
22047 555 310 15 Types of queries are: POCs, o
3816 522 227 99 COLOMBIA TELECOMUNICACIONES S
13489 501 242 115 Orbitel S.A. E.S.P.
27947 497 53 46 Telconet S.A
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 888 445 11 TEDATA
24863 783 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 205 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 157 441 88 Johnnic e-Ventures
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 3646 3822 256 bellsouth.net, inc.
23456 2433 684 1322 >>UNKNOWN<<
4323 1977 1097 397 Time Warner Telecom
4766 1892 9501 613 Korea Telecom (KIX)
18566 1822 357 232 Covad Communications
17974 1812 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1777 681 125 AppliedTheory Corporation
6478 1679 314 51 AT&T Worldnet Services
20115 1588 1543 632 Charter Communications
7545 1554 301 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 1812 1779 PT TELEKOMUNIKASI INDONESIA
1785 1777 1652 AppliedTheory Corporation
6478 1679 1628 AT&T Worldnet Services
18566 1822 1590 Covad Communications
4323 1977 1580 Time Warner Telecom
7545 1554 1468 TPG Internet Pty Ltd
10620 1477 1325 TVCABLE BOGOTA
4755 1463 1298 Videsh Sanchar Nigam Ltd. Aut
4766 1892 1279 Korea Telecom (KIX)
11492 1279 1264 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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /8:21 /9:12 /10:28 /11:79 /12:223
/13:459 /14:799 /15:1424 /16:11874 /17:6026 /18:10017
/19:19853 /20:26302 /21:26264 /22:34532 /23:33426 /24:187614
/25:376 /26:347 /27:170 /28:282 /29:176 /30:608
/31:65 /32:635
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3646 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1633 1679 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1209 2433 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1050 1777 AppliedTheory Corporation
4323 888 1977 Time Warner Telecom
286 887 1027 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:268 2:65 4:18 5:1 6:3 8:354
12:1991 13:1 14:456 15:15 16:3 17:8
20:10 23:7 24:1653 27:746 31:336 32:126
33:4 34:2 37:1 38:738 40:101 41:2511
42:5 44:3 46:909 47:4 49:177 50:401
52:13 55:4 56:2 57:40 58:852 59:486
60:387 61:1259 62:994 63:1939 64:3948 65:2299
66:4166 67:1903 68:1270 69:3094 70:750 71:357
72:1917 73:3 74:2403 75:323 76:350 77:909
78:693 79:483 80:1105 81:824 82:507 83:460
84:647 85:1084 86:614 87:773 88:328 89:1605
90:202 91:3750 92:514 93:1084 94:1282 95:809
96:484 97:246 98:849 99:35 101:59 103:14
106:1 107:6 108:85 109:952 110:586 111:713
112:319 113:399 114:533 115:666 116:973 117:683
118:819 119:1131 120:309 121:681 122:1622 123:1081
124:1257 125:1223 128:260 129:170 130:165 131:569
132:110 133:19 134:219 135:49 136:214 137:143
138:305 139:125 140:479 141:239 142:404 143:400
144:486 145:53 146:442 147:217 148:592 149:243
150:172 151:187 152:312 153:178 154:3 155:395
156:194 157:353 158:131 159:387 160:317 161:207
162:279 163:163 164:501 165:370 166:514 167:431
168:727 169:154 170:794 171:77 172:1 173:1579
174:554 175:370 177:113 178:916 180:841 181:15
182:442 183:205 184:344 185:1 186:1170 187:755
188:851 189:908 190:4807 192:5828 193:4867 194:3528
195:3110 196:1216 197:17 198:3601 199:3903 200:5532
201:1505 202:8366 203:8479 204:4160 205:2333 206:2744
207:2915 208:3980 209:3435 210:2744 211:1422 212:2027
213:1786 214:729 215:70 216:4860 217:1641 218:569
219:372 220:1206 221:485 222:342 223:146
End of report
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