Routing Table Report 00:00 GMT Sun 29 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: 363287
Prefixes after maximum aggregation: 163540
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176406
Total ASes present in the Internet Routing Table: 37733
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31599
Origin ASes announcing only one prefix: 15080
Transit ASes present in the Internet Routing Table: 5025
Transit-only ASes present in the Internet Routing Table: 126
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: 3389
Unregistered ASNs in the Routing Table: 395
Number of 32-bit ASNs allocated by the RIRs: 1392
Number of 32-bit ASNs visible in the Routing Table: 1109
Prefixes from 32-bit ASNs in the Routing Table: 2559
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2440494823
Equivalent to 145 /8s, 118 /16s and 254 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
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: 151134
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87279
Total APNIC prefixes after maximum aggregation: 28988
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83780
Unique aggregates announced from the APNIC address blocks: 35643
APNIC Region origin ASes present in the Internet Routing Table: 4456
APNIC Prefixes per ASN: 18.80
APNIC Region origin ASes announcing only one prefix: 1266
APNIC Region transit ASes present in the Internet Routing Table: 685
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: 619155905
Equivalent to 36 /8s, 231 /16s and 145 /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: 143580
Total ARIN prefixes after maximum aggregation: 73429
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115553
Unique aggregates announced from the ARIN address blocks: 45827
ARIN Region origin ASes present in the Internet Routing Table: 14414
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5481
ARIN Region transit ASes present in the Internet Routing Table: 1467
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: 801961496
Equivalent to 47 /8s, 204 /16s and 246 /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: 88247
Total RIPE prefixes after maximum aggregation: 48808
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80861
Unique aggregates announced from the RIPE address blocks: 51829
RIPE Region origin ASes present in the Internet Routing Table: 15665
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 7769
RIPE Region transit ASes present in the Internet Routing Table: 2446
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: 821
Number of RIPE addresses announced to Internet: 474704492
Equivalent to 28 /8s, 75 /16s and 106 /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: 33149
Total LACNIC prefixes after maximum aggregation: 7560
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 32219
Unique aggregates announced from the LACNIC address blocks: 16861
LACNIC Region origin ASes present in the Internet Routing Table: 1459
LACNIC Prefixes per ASN: 22.08
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 223
Number of LACNIC addresses announced to Internet: 84019464
Equivalent to 5 /8s, 2 /16s and 9 /24s
Percentage of available LACNIC address space announced: 55.6
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: 8165
Total AfriNIC prefixes after maximum aggregation: 1907
AfriNIC Deaggregation factor: 4.28
Prefixes being announced from the AfriNIC address blocks: 6345
Unique aggregates announced from the AfriNIC address blocks: 1927
AfriNIC Region origin ASes present in the Internet Routing Table: 454
AfriNIC Prefixes per ASN: 13.98
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 4.8
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: 23204864
Equivalent to 1 /8s, 98 /16s and 20 /24s
Percentage of available AfriNIC address space announced: 34.6
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 1844 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1537 301 86 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 1077 80 508 Sify Limited
9829 1037 875 51 BSNL National Internet Backbo
17488 943 170 104 Hathway IP Over Cable Interne
18101 929 116 139 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 1374 7101 897 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 1013 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 517 1780 319 UPC Distribution Services
3292 516 2078 398 TDC Tele Danmark
34984 516 106 179 Tellcom Iletisim Hizmetleri
20940 462 135 354 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
3320 426 8152 371 Deutsche Telekom AG
12479 426 577 6 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 1492 274 156 TVCABLE BOGOTA
8151 1374 2691 360 Uninet S.A. de C.V.
28573 1321 991 88 Types of queries are: POCs, o
7303 957 504 151 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 522 227 100 COLOMBIA TELECOMUNICACIONES S
13489 516 262 123 Orbitel S.A. E.S.P.
27947 505 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 872 445 11 TEDATA
24863 786 147 37 LINKdotNET AS number
15475 542 90 8 Nile Online
36992 290 315 19 Etisalat MISR
16637 285 441 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 208 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 2559 631 1377 >>UNKNOWN<<
4323 1967 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
4766 1903 9508 619 Korea Telecom (KIX)
17974 1844 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 1537 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 1844 1811 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 1537 1451 TPG Internet Pty Ltd
10620 1492 1336 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.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 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 /8:22 /9:12 /10:28 /11:80 /12:228
/13:460 /14:802 /15:1427 /16:11910 /17:6089 /18:10069
/19:19849 /20:26440 /21:26343 /22:34552 /23:33667 /24:188502
/25:378 /26:349 /27:173 /28:294 /29:237 /30:667
/31:68 /32:641
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 1382 1492 TVCABLE BOGOTA
23456 1241 2559 >>UNKNOWN<<
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1790 AppliedTheory Corporation
4323 882 1967 Time Warner Telecom
286 873 1013 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 2:66 4:20 5:1 6:3 8:354
12:1985 13:1 14:462 15:15 16:3 17:8
20:10 23:7 24:1658 27:780 31:355 32:126
33:4 34:2 37:1 38:738 40:101 41:2523
42:5 44:3 46:936 47:3 49:199 50:422
52:13 54:2 55:5 56:2 57:39 58:846
59:481 60:387 61:1236 62:1061 63:1950 64:3978
65:2294 66:4171 67:1901 68:1262 69:3098 70:751
71:357 72:1924 73:3 74:2411 75:316 76:349
77:908 78:707 79:485 80:1106 81:832 82:509
83:456 84:697 85:1073 86:609 87:780 88:336
89:1574 90:203 91:3804 92:518 93:1081 94:1314
95:823 96:506 97:250 98:859 99:35 101:57
103:32 106:1 107:7 108:85 109:953 110:602
111:708 112:304 113:398 114:538 115:671 116:963
117:692 118:826 119:1132 120:308 121:672 122:1621
123:999 124:1259 125:1229 128:263 129:176 130:164
131:571 132:109 133:19 134:214 135:48 136:212
137:143 138:301 139:123 140:482 141:239 142:404
143:401 144:485 145:54 146:448 147:220 148:591
149:243 150:168 151:186 152:327 153:178 154:3
155:397 156:194 157:354 158:138 159:389 160:314
161:207 162:282 163:164 164:499 165:373 166:515
167:428 168:732 169:156 170:803 171:77 172:1
173:1577 174:553 175:370 176:129 177:155 178:993
180:832 181:17 182:454 183:209 184:366 185:1
186:1176 187:776 188:863 189:905 190:4828 192:5871
193:4915 194:3554 195:3123 196:1227 197:19 198:3608
199:3915 200:5545 201:1496 202:8320 203:8397 204:4182
205:2327 206:2753 207:2879 208:3984 209:3485 210:2729
211:1431 212:2041 213:1787 214:732 215:72 216:4925
217:1637 218:569 219:366 220:1203 221:492 222:342
223:147
End of report
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