Routing Table Report 00:00 GMT Wed 23 Feb, 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: 352483
Prefixes after maximum aggregation: 158240
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 171782
Total ASes present in the Internet Routing Table: 35941
Prefixes per ASN: 9.81
Origin-only ASes present in the Internet Routing Table: 31048
Origin ASes announcing only one prefix: 14909
Transit ASes present in the Internet Routing Table: 4893
Transit-only ASes present in the Internet Routing Table: 115
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 424
Unregistered ASNs in the Routing Table: 172
Number of 32-bit ASNs allocated by the RIRs: 1137
Prefixes from 32-bit ASNs in the Routing Table: 2
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 206
Number of addresses announced to Internet: 2398061247
Equivalent to 142 /8s, 239 /16s and 130 /24s
Percentage of available address space announced: 64.7
Percentage of allocated address space announced: 64.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 88.1
Total number of prefixes smaller than registry allocations: 145808
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84517
Total APNIC prefixes after maximum aggregation: 28351
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 81458
Unique aggregates announced from the APNIC address blocks: 35926
APNIC Region origin ASes present in the Internet Routing Table: 4324
APNIC Prefixes per ASN: 18.84
APNIC Region origin ASes announcing only one prefix: 1220
APNIC Region transit ASes present in the Internet Routing Table: 681
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 590708418
Equivalent to 35 /8s, 53 /16s and 126 /24s
Percentage of available APNIC address space announced: 74.9
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: 142848
Total ARIN prefixes after maximum aggregation: 73551
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113281
Unique aggregates announced from the ARIN address blocks: 44973
ARIN Region origin ASes present in the Internet Routing Table: 14219
ARIN Prefixes per ASN: 7.97
ARIN Region origin ASes announcing only one prefix: 5381
ARIN Region transit ASes present in the Internet Routing Table: 1448
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 27
Number of ARIN addresses announced to Internet: 787621785
Equivalent to 46 /8s, 242 /16s and 39 /24s
Percentage of available ARIN address space announced: 62.6
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: 85723
Total RIPE prefixes after maximum aggregation: 47018
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 78203
Unique aggregates announced from the RIPE address blocks: 49192
RIPE Region origin ASes present in the Internet Routing Table: 15356
RIPE Prefixes per ASN: 5.09
RIPE Region origin ASes announcing only one prefix: 7737
RIPE Region transit ASes present in the Internet Routing Table: 2336
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 460769597
Equivalent to 27 /8s, 118 /16s and 201 /24s
Percentage of available RIPE address space announced: 74.2
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: 31828
Total LACNIC prefixes after maximum aggregation: 7385
LACNIC Deaggregation factor: 4.31
Prefixes being announced from the LACNIC address blocks: 30606
Unique aggregates announced from the LACNIC address blocks: 15920
LACNIC Region origin ASes present in the Internet Routing Table: 1434
LACNIC Prefixes per ASN: 21.34
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 267
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 20
Number of LACNIC addresses announced to Internet: 80832652
Equivalent to 4 /8s, 209 /16s and 104 /24s
Percentage of available LACNIC address space announced: 53.5
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: 7302
Total AfriNIC prefixes after maximum aggregation: 1821
AfriNIC Deaggregation factor: 4.01
Prefixes being announced from the AfriNIC address blocks: 5726
Unique aggregates announced from the AfriNIC address blocks: 1825
AfriNIC Region origin ASes present in the Internet Routing Table: 433
AfriNIC Prefixes per ASN: 13.22
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC addresses announced to Internet: 21883136
Equivalent to 1 /8s, 77 /16s and 233 /24s
Percentage of available AfriNIC address space announced: 32.6
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 1840 9491 580 Korea Telecom (KIX)
7545 1603 302 86 TPG Internet Pty Ltd
4755 1426 633 164 Videsh Sanchar Nigam Ltd. Aut
17974 1407 475 29 PT TELEKOMUNIKASI INDONESIA
24560 1115 323 184 Bharti Airtel Ltd.
9583 1044 77 488 Sify Limited
4808 996 2078 285 CNCGROUP IP network: China169
17488 958 162 103 Hathway IP Over Cable Interne
18101 931 117 139 Reliance Infocom Ltd Internet
9829 897 763 42 BSNL National Internet Backbo
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 3692 3855 261 bellsouth.net, inc.
4323 2616 1125 406 Time Warner Telecom
19262 1843 4939 283 Verizon Global Networks
1785 1785 697 132 AppliedTheory Corporation
20115 1577 1537 646 Charter Communications
6478 1518 296 79 AT&T Worldnet Services
18566 1440 321 160 Covad Communications
7018 1380 6732 893 AT&T WorldNet Services
2386 1299 554 935 AT&T Data Communications Serv
11492 1282 236 73 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
286 982 713 158 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 515 1780 319 UPC Distribution Services
3292 501 1996 389 TDC Tele Danmark
9198 468 267 15 Kazakhtelecom Corporate Sales
34984 464 98 144 Tellcom Iletisim Hizmetleri
8866 441 133 23 Bulgarian Telecommunication C
20940 413 97 320 Akamai Technologies European
3320 410 7620 357 Deutsche Telekom AG
8551 405 355 38 Bezeq International
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 1382 257 165 TVCABLE BOGOTA
8151 1351 2663 357 Uninet S.A. de C.V.
28573 1215 960 83 Types of queries are: POCs, o
6503 1168 354 74 AVANTEL, S.A.
7303 904 463 145 Telecom Argentina Stet-France
14420 640 57 93 Types of queries are: POCs, o
22047 545 310 15 Types of queries are: POCs, o
3816 513 221 100 COLOMBIA TELECOMUNICACIONES S
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 476 37 42 Telefonica del Sur 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
24863 689 147 40 LINKdotNET AS number
8452 663 445 11 TEDATA
15475 489 90 12 Nile Online
36992 303 271 14 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 220 78 10 RAYA Telecom - Egypt
6713 205 199 12 Itissalat Al-MAGHRIB
33776 201 12 15 Starcomms Nigeria Limited
29571 192 17 11 Ci Telecom Autonomous system
16637 158 439 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 3692 3855 261 bellsouth.net, inc.
4323 2616 1125 406 Time Warner Telecom
19262 1843 4939 283 Verizon Global Networks
4766 1840 9491 580 Korea Telecom (KIX)
1785 1785 697 132 AppliedTheory Corporation
7545 1603 302 86 TPG Internet Pty Ltd
20115 1577 1537 646 Charter Communications
6478 1518 296 79 AT&T Worldnet Services
18566 1440 321 160 Covad Communications
4755 1426 633 164 Videsh Sanchar Nigam Ltd. Aut
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 2616 2210 Time Warner Telecom
1785 1785 1653 AppliedTheory Corporation
19262 1843 1560 Verizon Global Networks
7545 1603 1517 TPG Internet Pty Ltd
6478 1518 1439 AT&T Worldnet Services
17974 1407 1378 PT TELEKOMUNIKASI INDONESIA
18566 1440 1280 Covad Communications
4755 1426 1262 Videsh Sanchar Nigam Ltd. Aut
4766 1840 1260 Korea Telecom (KIX)
10620 1382 1217 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
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
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 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 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
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
31.24.0.0/21 16082 Spitfire Digital Networks Aut
31.24.8.0/21 8758 Interway Communication GmbH
31.24.32.0/21 43082 ServerSpace Ltd
31.24.40.0/21 43988 Access Basic Server Autonomou
31.28.32.0/19 8439 AIST Autonomous System
37.0.0.0/16 12654 RIPE NCC RIS Project
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 /9:10 /10:26 /11:73 /12:216
/13:446 /14:769 /15:1400 /16:11621 /17:5890 /18:9636
/19:19362 /20:25089 /21:25300 /22:33594 /23:32215 /24:183650
/25:398 /26:376 /27:213 /28:389 /29:334 /30:735
/31:49 /32:670
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2280 3692 bellsouth.net, inc.
6478 1472 1518 AT&T Worldnet Services
18566 1418 1440 Covad Communications
4323 1407 2616 Time Warner Telecom
10620 1273 1382 TVCABLE BOGOTA
11492 1239 1282 Cable One
7011 1057 1160 Citizens Utilities
1785 1054 1785 AppliedTheory Corporation
19262 954 1843 Verizon Global Networks
6503 951 1168 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:223 2:57 4:17 5:1 8:335 12:2033
13:1 14:409 15:15 16:3 17:8 20:9
23:1 24:1504 27:588 32:127 33:4 34:2
37:1 38:706 40:101 41:2209 44:3 46:646
47:4 49:152 50:93 52:12 55:4 56:2
57:42 58:865 59:477 60:383 61:1110 62:1071
63:1948 64:3874 65:2361 66:4254 67:1810 68:1184
69:3037 70:778 71:410 72:2045 73:3 74:2402
75:303 76:355 77:881 78:709 79:462 80:1073
81:827 82:535 83:485 84:646 85:1065 86:574
87:774 88:360 89:1611 90:156 91:3534 92:492
93:1056 94:1231 95:784 96:455 97:251 98:826
99:33 101:30 107:3 108:88 109:940 110:481
111:717 112:314 113:372 114:499 115:652 116:962
117:680 118:675 119:1021 120:245 121:698 122:1621
123:1053 124:1317 125:1258 128:267 129:159 130:170
131:569 132:109 133:20 134:222 135:49 136:215
137:147 138:295 139:132 140:493 141:203 142:360
143:384 144:488 145:51 146:438 147:214 148:638
149:275 150:168 151:230 152:298 153:179 154:3
155:360 156:176 157:344 158:130 159:380 160:315
161:207 162:275 163:155 164:485 165:356 166:503
167:421 168:743 169:152 170:754 171:69 172:2
173:1332 174:536 175:318 176:1 177:14 178:770
180:812 181:2 182:371 183:248 184:278 186:1017
187:803 188:895 189:1054 190:4402 192:5846 193:4824
194:3555 195:3092 196:1196 197:3 198:3589 199:3846
200:5584 201:1588 202:8446 203:8459 204:4096 205:2344
206:2655 207:3085 208:3923 209:3497 210:2649 211:1342
212:1987 213:1791 214:773 215:63 216:4867 217:1646
218:550 219:377 220:1204 221:453 222:338 223:98
End of report
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