Routing Table Report 00:00 GMT Wed 25 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: 362477
Prefixes after maximum aggregation: 163242
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176942
Total ASes present in the Internet Routing Table: 37656
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31553
Origin ASes announcing only one prefix: 15038
Transit ASes present in the Internet Routing Table: 5002
Transit-only ASes present in the Internet Routing Table: 121
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3308
Unregistered ASNs in the Routing Table: 375
Number of 32-bit ASNs allocated by the RIRs: 1371
Number of 32-bit ASNs visible in the Routing Table: 1101
Prefixes from 32-bit ASNs in the Routing Table: 2526
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 172
Number of addresses announced to Internet: 2434931303
Equivalent to 145 /8s, 34 /16s and 26 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 150299
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87533
Total APNIC prefixes after maximum aggregation: 29014
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 84036
Unique aggregates announced from the APNIC address blocks: 36739
APNIC Region origin ASes present in the Internet Routing Table: 4440
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1250
APNIC Region transit ASes present in the Internet Routing Table: 675
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615404993
Equivalent to 36 /8s, 174 /16s and 85 /24s
Percentage of available APNIC address space announced: 78.0
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: 143483
Total ARIN prefixes after maximum aggregation: 73359
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115441
Unique aggregates announced from the ARIN address blocks: 45618
ARIN Region origin ASes present in the Internet Routing Table: 14389
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5456
ARIN Region transit ASes present in the Internet Routing Table: 1455
Average ARIN Region AS path length visible: 3.5
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: 801773336
Equivalent to 47 /8s, 202 /16s and 23 /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: 87761
Total RIPE prefixes after maximum aggregation: 48630
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80417
Unique aggregates announced from the RIPE address blocks: 51568
RIPE Region origin ASes present in the Internet Routing Table: 15646
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7765
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: 817
Number of RIPE addresses announced to Internet: 474189548
Equivalent to 28 /8s, 67 /16s and 142 /24s
Percentage of available RIPE address space announced: 76.4
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: 32997
Total LACNIC prefixes after maximum aggregation: 7521
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 32070
Unique aggregates announced from the LACNIC address blocks: 16789
LACNIC Region origin ASes present in the Internet Routing Table: 1456
LACNIC Prefixes per ASN: 22.03
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 220
Number of LACNIC addresses announced to Internet: 83839240
Equivalent to 4 /8s, 255 /16s and 73 /24s
Percentage of available LACNIC address space announced: 55.5
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: 7889
Total AfriNIC prefixes after maximum aggregation: 1880
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6213
Unique aggregates announced from the AfriNIC address blocks: 1915
AfriNIC Region origin ASes present in the Internet Routing Table: 452
AfriNIC Prefixes per ASN: 13.75
AfriNIC Region origin ASes announcing only one prefix: 138
AfriNIC Region transit ASes present in the Internet Routing Table: 102
Average AfriNIC Region AS path length visible: 3.9
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: 23214592
Equivalent to 1 /8s, 98 /16s and 58 /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 1840 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1538 301 87 TPG Internet Pty Ltd
4755 1470 634 166 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1140 1064 7 Vietel Corporation
9583 1083 81 512 Sify Limited
9829 1037 874 51 BSNL National Internet Backbo
17488 945 170 101 Hathway IP Over Cable Interne
18101 934 116 141 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 3646 3822 256 bellsouth.net, inc.
4323 1974 1097 399 Time Warner Telecom
18566 1904 362 266 Covad Communications
1785 1790 681 123 AppliedTheory Corporation
6478 1701 316 53 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
19262 1490 4919 308 Verizon Global Networks
7018 1371 7101 895 AT&T WorldNet Services
22773 1333 2897 88 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 1013 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 526 1780 319 UPC Distribution Services
3292 516 2062 397 TDC Tele Danmark
34984 514 106 182 Tellcom Iletisim Hizmetleri
20940 460 134 352 Akamai Technologies European
29049 456 33 45 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 428 577 6 Uni2 Autonomous System
3320 419 8149 365 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 1483 273 154 TVCABLE BOGOTA
8151 1378 2685 361 Uninet S.A. de C.V.
28573 1314 991 87 Types of queries are: POCs, o
7303 925 472 148 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 563 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 517 262 121 Orbitel S.A. E.S.P.
27947 504 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 879 445 11 TEDATA
24863 788 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 286 315 18 Etisalat MISR
3741 268 985 228 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
16637 153 441 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 3646 3822 256 bellsouth.net, inc.
23456 2526 630 1371 >>UNKNOWN<<
4323 1974 1097 399 Time Warner Telecom
18566 1904 362 266 Covad Communications
4766 1903 9508 619 Korea Telecom (KIX)
17974 1840 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 123 AppliedTheory Corporation
6478 1701 316 53 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
7545 1538 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 1840 1807 PT TELEKOMUNIKASI INDONESIA
1785 1790 1667 AppliedTheory Corporation
6478 1701 1648 AT&T Worldnet Services
18566 1904 1638 Covad Communications
4323 1974 1575 Time Warner Telecom
7545 1538 1451 TPG Internet Pty Ltd
10620 1483 1329 TVCABLE BOGOTA
4755 1470 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1903 1284 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
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 /8:21 /9:12 /10:28 /11:80 /12:226
/13:461 /14:802 /15:1426 /16:11922 /17:6073 /18:10062
/19:19838 /20:26412 /21:26336 /22:34579 /23:33614 /24:187942
/25:376 /26:350 /27:172 /28:287 /29:178 /30:599
/31:66 /32:615
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3646 bellsouth.net, inc.
18566 1862 1904 Covad Communications
6478 1655 1701 AT&T Worldnet Services
10620 1373 1483 TVCABLE BOGOTA
23456 1241 2526 >>UNKNOWN<<
11492 1225 1279 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1790 AppliedTheory Corporation
4323 884 1974 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)
----------------------------------------------
1:278 2:72 4:20 5:1 6:3 8:354
12:1988 13:1 14:461 15:15 16:3 17:8
20:10 23:7 24:1626 27:776 31:353 32:126
33:4 34:2 37:1 38:740 40:101 41:2521
42:5 44:3 46:931 47:4 49:198 50:420
52:13 54:2 55:4 56:2 57:40 58:849
59:485 60:387 61:1240 62:980 63:1954 64:3970
65:2292 66:4175 67:1873 68:1270 69:3091 70:749
71:357 72:1914 73:3 74:2411 75:315 76:349
77:908 78:705 79:468 80:1098 81:825 82:509
83:455 84:648 85:1072 86:601 87:782 88:336
89:1563 90:203 91:3792 92:516 93:1079 94:1300
95:821 96:506 97:249 98:845 99:35 101:58
103:17 106:1 107:7 108:85 109:958 110:599
111:713 112:307 113:399 114:537 115:679 116:968
117:696 118:825 119:1136 120:303 121:671 122:1624
123:992 124:1267 125:1233 128:263 129:175 130:163
131:571 132:109 133:19 134:214 135:48 136:215
137:144 138:301 139:124 140:482 141:239 142:406
143:396 144:482 145:54 146:447 147:220 148:589
149:244 150:170 151:185 152:308 153:178 154:3
155:396 156:194 157:353 158:135 159:388 160:317
161:207 162:282 163:163 164:504 165:372 166:514
167:426 168:731 169:154 170:795 171:77 172:1
173:1574 174:555 175:375 176:1 177:137 178:966
180:843 181:17 182:449 183:207 184:361 185:1
186:1153 187:758 188:863 189:899 190:4820 192:5828
193:4874 194:3528 195:3110 196:1237 197:19 198:3604
199:3923 200:5542 201:1494 202:8370 203:8418 204:4179
205:2333 206:2752 207:2897 208:3982 209:3481 210:2740
211:1433 212:2050 213:1781 214:731 215:72 216:4918
217:1641 218:569 219:364 220:1205 221:491 222:340
223:151
End of report
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