Routing Table Report 00:00 GMT Mon 04 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: 355903
Prefixes after maximum aggregation: 161031
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173987
Total ASes present in the Internet Routing Table: 37164
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31306
Origin ASes announcing only one prefix: 14974
Transit ASes present in the Internet Routing Table: 4905
Transit-only ASes present in the Internet Routing Table: 116
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 26
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2677
Unregistered ASNs in the Routing Table: 244
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 953
Prefixes from 32-bit ASNs in the Routing Table: 2105
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 196
Number of addresses announced to Internet: 2393742388
Equivalent to 142 /8s, 173 /16s and 156 /24s
Percentage of available address space announced: 64.6
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.1
Total number of prefixes smaller than registry allocations: 147323
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85268
Total APNIC prefixes after maximum aggregation: 28795
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 82297
Unique aggregates announced from the APNIC address blocks: 36680
APNIC Region origin ASes present in the Internet Routing Table: 4365
APNIC Prefixes per ASN: 18.85
APNIC Region origin ASes announcing only one prefix: 1231
APNIC Region transit ASes present in the Internet Routing Table: 673
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 601887169
Equivalent to 35 /8s, 224 /16s and 17 /24s
Percentage of available APNIC address space announced: 76.3
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: 141656
Total ARIN prefixes after maximum aggregation: 72796
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 113811
Unique aggregates announced from the ARIN address blocks: 44975
ARIN Region origin ASes present in the Internet Routing Table: 14297
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5438
ARIN Region transit ASes present in the Internet Routing Table: 1453
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797522712
Equivalent to 47 /8s, 137 /16s and 59 /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: 86465
Total RIPE prefixes after maximum aggregation: 47824
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 78903
Unique aggregates announced from the RIPE address blocks: 50185
RIPE Region origin ASes present in the Internet Routing Table: 15498
RIPE Prefixes per ASN: 5.09
RIPE Region origin ASes announcing only one prefix: 7740
RIPE Region transit ASes present in the Internet Routing Table: 2360
Average RIPE Region AS path length visible: 3.8
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 704
Number of RIPE addresses announced to Internet: 465958456
Equivalent to 27 /8s, 197 /16s and 246 /24s
Percentage of available RIPE address space announced: 75.1
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: 32488
Total LACNIC prefixes after maximum aggregation: 7438
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31406
Unique aggregates announced from the LACNIC address blocks: 16263
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.82
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 188
Number of LACNIC addresses announced to Internet: 81678732
Equivalent to 4 /8s, 222 /16s and 81 /24s
Percentage of available LACNIC address space announced: 54.1
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: 7643
Total AfriNIC prefixes after maximum aggregation: 1827
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6012
Unique aggregates announced from the AfriNIC address blocks: 1870
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.66
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22714624
Equivalent to 1 /8s, 90 /16s and 153 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1871 9506 601 Korea Telecom (KIX)
7545 1541 301 84 TPG Internet Pty Ltd
17974 1439 472 34 PT TELEKOMUNIKASI INDONESIA
4755 1437 638 168 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 204 Bharti Airtel Ltd.
9583 1055 77 494 Sify Limited
9829 1003 869 51 BSNL National Internet Backbo
17488 956 162 97 Hathway IP Over Cable Interne
18101 935 116 139 Reliance Infocom Ltd Internet
4808 916 1956 263 CNCGROUP IP network: China169
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 3669 3838 258 bellsouth.net, inc.
4323 2541 1107 397 Time Warner Telecom
1785 1788 681 132 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1582 1545 640 Charter Communications
19262 1489 4919 303 Verizon Global Networks
7018 1360 6786 886 AT&T WorldNet Services
11492 1327 240 15 Cable One
22773 1292 2865 84 Cox Communications, Inc.
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 1006 796 164 KPNQwest Backbone AS
9116 544 326 31 Goldenlines main autonomous s
6830 515 1780 318 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 484 97 186 Tellcom Iletisim Hizmetleri
20940 452 128 341 Akamai Technologies European
8866 447 134 26 Bulgarian Telecommunication C
9198 415 267 15 Kazakhtelecom Corporate Sales
3320 412 7604 358 Deutsche Telekom AG
8402 409 320 32 Corbina telecom
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 1405 262 152 TVCABLE BOGOTA
28573 1264 971 84 Types of queries are: POCs, o
8151 1251 2661 371 Uninet S.A. de C.V.
6503 1117 354 73 AVANTEL, S.A.
7303 925 465 149 Telecom Argentina Stet-France
14420 642 52 91 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
27947 488 54 49 Telconet S.A
11172 486 83 79 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 841 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 434 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 151 441 87 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 3669 3838 258 bellsouth.net, inc.
4323 2541 1107 397 Time Warner Telecom
23456 2105 504 1126 >>UNKNOWN<<
4766 1871 9506 601 Korea Telecom (KIX)
1785 1788 681 132 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1582 1545 640 Charter Communications
7545 1541 301 84 TPG Internet Pty Ltd
19262 1489 4919 303 Verizon Global Networks
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 2541 2144 Time Warner Telecom
1785 1788 1656 AppliedTheory Corporation
6478 1596 1549 AT&T Worldnet Services
7545 1541 1457 TPG Internet Pty Ltd
18566 1606 1411 Covad Communications
17974 1439 1405 PT TELEKOMUNIKASI INDONESIA
11492 1327 1312 Cable One
4766 1871 1270 Korea Telecom (KIX)
4755 1437 1269 Videsh Sanchar Nigam Ltd. Aut
10620 1405 1253 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
44559 UNALLOCATED 2.56.0.0/16 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 1239 Sprint
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 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
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
1.3.0.0/16 38639 NTT Communications Corporatio
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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
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 /9:11 /10:26 /11:75 /12:219
/13:447 /14:774 /15:1402 /16:11677 /17:5950 /18:9735
/19:19588 /20:25527 /21:25676 /22:34044 /23:32679 /24:185415
/25:373 /26:348 /27:174 /28:207 /29:200 /30:654
/31:57 /32:626
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2262 3669 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1550 1596 AT&T Worldnet Services
4323 1360 2541 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1276 1327 Cable One
23456 1124 2105 >>UNKNOWN<<
7011 1064 1164 Citizens Utilities
1785 1056 1788 AppliedTheory Corporation
6503 900 1117 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:73 4:18 5:1 8:348 12:2019
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1612 27:707 31:53 32:126 33:2
34:2 37:1 38:751 39:1 40:101 41:2374
42:1 44:3 46:794 47:4 49:143 50:141
52:13 55:5 56:2 57:40 58:829 59:489
60:387 61:1144 62:1024 63:1922 64:3896 65:2336
66:4333 67:1836 68:1255 69:3010 70:746 71:349
72:1933 73:3 74:2387 75:299 76:344 77:891
78:701 79:462 80:1088 81:830 82:521 83:476
84:666 85:1051 86:606 87:794 88:346 89:1597
90:175 91:3673 92:510 93:1055 94:1269 95:799
96:459 97:253 98:825 99:35 101:49 106:1
107:4 108:80 109:934 110:517 111:679 112:325
113:389 114:516 115:675 116:947 117:675 118:765
119:1112 120:287 121:709 122:1607 123:1048 124:1287
125:1250 128:266 129:177 130:172 131:565 132:109
133:20 134:218 135:49 136:213 137:142 138:301
139:117 140:484 141:173 142:381 143:392 144:480
145:52 146:442 147:213 148:635 149:263 150:167
151:187 152:298 153:180 154:3 155:390 156:187
157:350 158:131 159:381 160:317 161:241 162:277
163:166 164:490 165:367 166:503 167:414 168:722
169:155 170:780 171:74 172:2 173:1279 174:533
175:351 177:70 178:778 180:798 181:4 182:413
183:202 184:318 185:1 186:1124 187:900 188:930
189:1039 190:4811 192:5796 193:4830 194:3533 195:3090
196:1216 197:15 198:3604 199:3880 200:5570 201:1498
202:8368 203:8447 204:4130 205:2324 206:2664 207:3027
208:3931 209:3511 210:2732 211:1366 212:2015 213:1764
214:730 215:66 216:4873 217:1636 218:562 219:375
220:1199 221:481 222:318 223:105
End of report
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