Routing Table Report 00:00 GMT Wed 13 Apr, 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: 356980
Prefixes after maximum aggregation: 161427
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 174805
Total ASes present in the Internet Routing Table: 37290
Prefixes per ASN: 9.57
Origin-only ASes present in the Internet Routing Table: 31277
Origin ASes announcing only one prefix: 14977
Transit ASes present in the Internet Routing Table: 5019
Transit-only ASes present in the Internet Routing Table: 128
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2881
Unregistered ASNs in the Routing Table: 271
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 994
Prefixes from 32-bit ASNs in the Routing Table: 2202
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2409305272
Equivalent to 143 /8s, 155 /16s and 20 /24s
Percentage of available address space announced: 65.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147769
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85492
Total APNIC prefixes after maximum aggregation: 28754
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82593
Unique aggregates announced from the APNIC address blocks: 36958
APNIC Region origin ASes present in the Internet Routing Table: 4387
APNIC Prefixes per ASN: 18.83
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 697
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 608841409
Equivalent to 36 /8s, 74 /16s and 46 /24s
Percentage of available APNIC address space announced: 77.2
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: 141972
Total ARIN prefixes after maximum aggregation: 72938
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 114170
Unique aggregates announced from the ARIN address blocks: 45102
ARIN Region origin ASes present in the Internet Routing Table: 14326
ARIN Prefixes per ASN: 7.97
ARIN Region origin ASes announcing only one prefix: 5450
ARIN Region transit ASes present in the Internet Routing Table: 1472
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 27
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797945880
Equivalent to 47 /8s, 143 /16s and 176 /24s
Percentage of available ARIN address space announced: 63.4
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: 86926
Total RIPE prefixes after maximum aggregation: 47972
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79341
Unique aggregates announced from the RIPE address blocks: 50363
RIPE Region origin ASes present in the Internet Routing Table: 15518
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7733
RIPE Region transit ASes present in the Internet Routing Table: 2419
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 739
Number of RIPE addresses announced to Internet: 464542140
Equivalent to 27 /8s, 176 /16s and 89 /24s
Percentage of available RIPE address space announced: 74.8
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: 32423
Total LACNIC prefixes after maximum aggregation: 7453
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31402
Unique aggregates announced from the LACNIC address blocks: 16398
LACNIC Region origin ASes present in the Internet Routing Table: 1437
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 192
Number of LACNIC addresses announced to Internet: 81901708
Equivalent to 4 /8s, 225 /16s and 184 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7621
Total AfriNIC prefixes after maximum aggregation: 1824
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5977
Unique aggregates announced from the AfriNIC address blocks: 1886
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.46
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 98
Average AfriNIC Region AS path length visible: 4.2
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22718720
Equivalent to 1 /8s, 90 /16s and 169 /24s
Percentage of available AfriNIC address space announced: 33.9
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 1875 9509 604 Korea Telecom (KIX)
17974 1501 480 33 PT TELEKOMUNIKASI INDONESIA
7545 1498 301 82 TPG Internet Pty Ltd
4755 1441 378 162 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 203 Bharti Airtel Ltd.
9829 1007 870 50 BSNL National Internet Backbo
4808 1006 2080 290 CNCGROUP IP network: China169
9583 979 71 492 Sify Limited
17488 956 162 98 Hathway IP Over Cable Interne
18101 934 116 138 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 3662 3822 255 bellsouth.net, inc.
4323 2525 1099 394 Time Warner Telecom
1785 1789 681 127 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1610 305 42 AT&T Worldnet Services
20115 1588 1556 641 Charter Communications
19262 1494 4933 297 Verizon Global Networks
7018 1354 6945 883 AT&T WorldNet Services
22773 1297 2865 84 Cox Communications, Inc.
2386 1270 536 913 AT&T Data Communications Serv
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 1007 796 169 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 518 1780 319 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 508 98 185 Tellcom Iletisim Hizmetleri
29049 467 33 34 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 446 129 341 Akamai Technologies European
8402 420 320 32 Corbina telecom
3320 417 7607 363 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 1418 263 155 TVCABLE BOGOTA
28573 1277 972 86 Types of queries are: POCs, o
8151 1242 2667 366 Uninet S.A. de C.V.
7303 924 465 147 Telecom Argentina Stet-France
6503 923 354 73 AVANTEL, S.A.
14420 661 53 90 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
27947 491 54 49 Telconet S.A
11172 487 99 81 Alestra
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 836 445 11 TEDATA
24863 778 147 40 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 297 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 222 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 86 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 3662 3822 255 bellsouth.net, inc.
4323 2525 1099 394 Time Warner Telecom
23456 2202 640 1193 >>UNKNOWN<<
4766 1875 9509 604 Korea Telecom (KIX)
1785 1789 681 127 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1610 305 42 AT&T Worldnet Services
20115 1588 1556 641 Charter Communications
17974 1501 480 33 PT TELEKOMUNIKASI INDONESIA
7545 1498 301 82 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
4323 2525 2131 Time Warner Telecom
1785 1789 1662 AppliedTheory Corporation
6478 1610 1568 AT&T Worldnet Services
17974 1501 1468 PT TELEKOMUNIKASI INDONESIA
18566 1642 1445 Covad Communications
7545 1498 1416 TPG Internet Pty Ltd
4755 1441 1279 Videsh Sanchar Nigam Ltd. Aut
4766 1875 1271 Korea Telecom (KIX)
10620 1418 1263 TVCABLE BOGOTA
11492 1263 1248 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
44559 UNALLOCATED 2.56.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/19 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.58.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.59.0.0/16 29632 The NetAssist autono
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 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
2.56.0.0/16 44559 >>UNKNOWN<<
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
31.6.96.0/21 43554 Cifrovye Dispetcherskie Siste
31.6.96.0/19 43554 Cifrovye Dispetcherskie Siste
31.6.104.0/21 43554 Cifrovye Dispetcherskie Siste
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 /8:19 /9:12 /10:26 /11:76 /12:220
/13:452 /14:779 /15:1404 /16:11712 /17:5970 /18:9762
/19:19637 /20:25669 /21:25861 /22:33992 /23:32848 /24:185932
/25:370 /26:349 /27:164 /28:174 /29:201 /30:655
/31:60 /32:636
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2259 3662 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1564 1610 AT&T Worldnet Services
4323 1357 2525 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1212 1263 Cable One
23456 1134 2202 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1056 1789 AppliedTheory Corporation
286 870 1007 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:255 2:79 4:18 5:1 8:351 12:2005
13:1 14:436 15:15 16:3 17:8 20:9
23:5 24:1621 27:719 31:220 32:126 33:3
34:2 37:1 38:763 39:1 40:101 41:2334
42:1 44:3 46:825 47:4 49:172 50:158
52:13 55:4 56:2 57:39 58:846 59:492
60:387 61:1172 62:1020 63:1934 64:3917 65:2333
66:4335 67:1826 68:1257 69:3053 70:745 71:350
72:1934 73:3 74:2397 75:299 76:343 77:893
78:698 79:467 80:1103 81:838 82:522 83:470
84:666 85:1071 86:614 87:782 88:345 89:1614
90:180 91:3697 92:513 93:1074 94:1289 95:800
96:450 97:251 98:825 99:35 101:61 103:1
106:2 107:4 108:78 109:949 110:536 111:690
112:325 113:389 114:525 115:681 116:954 117:674
118:774 119:1134 120:290 121:676 122:1627 123:1061
124:1224 125:1262 128:266 129:167 130:173 131:563
132:102 133:20 134:219 135:49 136:213 137:142
138:302 139:115 140:488 141:174 142:378 143:393
144:482 145:52 146:444 147:215 148:594 149:263
150:167 151:187 152:306 153:180 154:3 155:363
156:189 157:356 158:131 159:380 160:315 161:243
162:277 163:164 164:490 165:367 166:514 167:419
168:725 169:154 170:781 171:75 172:1 173:1275
174:544 175:353 177:79 178:865 180:805 181:7
182:420 183:197 184:323 185:1 186:1124 187:833
188:957 189:1005 190:4838 192:5811 193:4831 194:3516
195:3103 196:1205 197:16 198:3581 199:3914 200:5540
201:1493 202:8354 203:8419 204:4129 205:2328 206:2670
207:3030 208:3947 209:3517 210:2705 211:1364 212:2027
213:1767 214:728 215:67 216:4882 217:1666 218:561
219:385 220:1198 221:467 222:311 223:118
End of report
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