Routing Table Report 00:00 GMT Tue 12 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: 357216
Prefixes after maximum aggregation: 161458
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 174754
Total ASes present in the Internet Routing Table: 37267
Prefixes per ASN: 9.59
Origin-only ASes present in the Internet Routing Table: 31274
Origin ASes announcing only one prefix: 14976
Transit ASes present in the Internet Routing Table: 5005
Transit-only ASes present in the Internet Routing Table: 125
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2873
Unregistered ASNs in the Routing Table: 272
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 988
Prefixes from 32-bit ASNs in the Routing Table: 2200
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 164
Number of addresses announced to Internet: 2409013688
Equivalent to 143 /8s, 150 /16s and 161 /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: 90.3
Total number of prefixes smaller than registry allocations: 147748
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85754
Total APNIC prefixes after maximum aggregation: 28829
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82864
Unique aggregates announced from the APNIC address blocks: 36967
APNIC Region origin ASes present in the Internet Routing Table: 4386
APNIC Prefixes per ASN: 18.89
APNIC Region origin ASes announcing only one prefix: 1231
APNIC Region transit ASes present in the Internet Routing Table: 694
Average APNIC Region AS path length visible: 4.3
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: 608654785
Equivalent to 36 /8s, 71 /16s and 85 /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: 142108
Total ARIN prefixes after maximum aggregation: 72946
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 114277
Unique aggregates announced from the ARIN address blocks: 45104
ARIN Region origin ASes present in the Internet Routing Table: 14317
ARIN Prefixes per ASN: 7.98
ARIN Region origin ASes announcing only one prefix: 5450
ARIN Region transit ASes present in the Internet Routing Table: 1468
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797927704
Equivalent to 47 /8s, 143 /16s and 105 /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: 86773
Total RIPE prefixes after maximum aggregation: 47917
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79239
Unique aggregates announced from the RIPE address blocks: 50314
RIPE Region origin ASes present in the Internet Routing Table: 15516
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7736
RIPE Region transit ASes present in the Internet Routing Table: 2414
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 734
Number of RIPE addresses announced to Internet: 464678076
Equivalent to 27 /8s, 178 /16s and 108 /24s
Percentage of available RIPE address space announced: 74.9
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: 32388
Total LACNIC prefixes after maximum aggregation: 7454
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31372
Unique aggregates announced from the LACNIC address blocks: 16401
LACNIC Region origin ASes present in the Internet Routing Table: 1436
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: 260
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: 191
Number of LACNIC addresses announced to Internet: 81860748
Equivalent to 4 /8s, 225 /16s and 24 /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: 7648
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 5999
Unique aggregates announced from the AfriNIC address blocks: 1885
AfriNIC Region origin ASes present in the Internet Routing Table: 443
AfriNIC Prefixes per ASN: 13.54
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.2
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: 22729472
Equivalent to 1 /8s, 90 /16s and 211 /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)
7545 1513 301 83 TPG Internet Pty Ltd
17974 1496 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1442 378 163 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 203 Bharti Airtel Ltd.
9583 1057 77 493 Sify Limited
4808 1017 2081 288 CNCGROUP IP network: China169
9829 1007 870 50 BSNL National Internet Backbo
17488 957 162 98 Hathway IP Over Cable Interne
18101 933 116 138 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 3664 3822 255 bellsouth.net, inc.
4323 2530 1104 394 Time Warner Telecom
1785 1790 681 127 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
20115 1587 1555 641 Charter Communications
19262 1490 4932 296 Verizon Global Networks
7018 1357 6945 884 AT&T WorldNet Services
22773 1293 2865 84 Cox Communications, Inc.
11492 1271 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 1008 796 169 KPNQwest Backbone AS
9116 541 326 30 Goldenlines main autonomous s
6830 516 1780 319 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 507 98 184 Tellcom Iletisim Hizmetleri
29049 467 33 34 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 446 129 341 Akamai Technologies European
3320 417 7607 363 Deutsche Telekom AG
8402 415 320 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 1418 263 155 TVCABLE BOGOTA
28573 1272 972 86 Types of queries are: POCs, o
8151 1242 2665 365 Uninet S.A. de C.V.
6503 960 354 73 AVANTEL, S.A.
7303 923 465 146 Telecom Argentina Stet-France
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 839 445 11 TEDATA
24863 775 147 40 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 293 287 12 Etisalat MISR
3741 266 985 227 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 161 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 3664 3822 255 bellsouth.net, inc.
4323 2530 1104 394 Time Warner Telecom
23456 2200 636 1190 >>UNKNOWN<<
4766 1875 9509 604 Korea Telecom (KIX)
1785 1790 681 127 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
20115 1587 1555 641 Charter Communications
7545 1513 301 83 TPG Internet Pty Ltd
17974 1496 480 33 PT TELEKOMUNIKASI INDONESIA
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 2530 2136 Time Warner Telecom
1785 1790 1663 AppliedTheory Corporation
6478 1612 1575 AT&T Worldnet Services
17974 1496 1463 PT TELEKOMUNIKASI INDONESIA
18566 1642 1445 Covad Communications
7545 1513 1430 TPG Internet Pty Ltd
4755 1442 1279 Videsh Sanchar Nigam Ltd. Aut
4766 1875 1271 Korea Telecom (KIX)
10620 1418 1263 TVCABLE BOGOTA
11492 1271 1256 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 7018 AT&T WorldNet Servic
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
31.7.0.0/21 12859 BIT BV
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 /8:20 /9:12 /10:26 /11:76 /12:220
/13:452 /14:778 /15:1402 /16:11704 /17:5968 /18:9749
/19:19635 /20:25685 /21:25880 /22:33995 /23:32808 /24:186200
/25:366 /26:349 /27:165 /28:176 /29:200 /30:652
/31:60 /32:638
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2261 3664 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1566 1612 AT&T Worldnet Services
4323 1357 2530 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1220 1271 Cable One
23456 1135 2200 >>UNKNOWN<<
7011 1061 1161 Citizens Utilities
1785 1057 1790 AppliedTheory Corporation
286 871 1008 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:77 4:18 5:1 8:349 12:2004
13:1 14:428 15:15 16:3 17:8 20:9
23:5 24:1621 27:717 31:218 32:126 33:3
34:2 37:1 38:752 39:1 40:101 41:2351
42:1 44:3 46:819 47:4 49:174 50:222
52:13 55:4 56:2 57:40 58:847 59:491
60:388 61:1170 62:1020 63:1935 64:3916 65:2334
66:4337 67:1827 68:1256 69:3049 70:743 71:350
72:1934 73:3 74:2392 75:299 76:344 77:891
78:699 79:470 80:1101 81:835 82:522 83:468
84:664 85:1061 86:614 87:798 88:343 89:1615
90:180 91:3703 92:512 93:1071 94:1263 95:788
96:449 97:253 98:824 99:35 101:61 103:1
106:2 107:4 108:78 109:952 110:536 111:691
112:324 113:388 114:526 115:708 116:954 117:674
118:773 119:1136 120:290 121:715 122:1625 123:1058
124:1275 125:1273 128:266 129:168 130:173 131:565
132:102 133:20 134:219 135:49 136:213 137:142
138:302 139:115 140:488 141:174 142:377 143:393
144:479 145:53 146:442 147:213 148:595 149:263
150:167 151:187 152:305 153:180 154:3 155:393
156:189 157:356 158:132 159:380 160:317 161:243
162:277 163:164 164:488 165:368 166:511 167:418
168:724 169:155 170:780 171:75 172:1 173:1275
174:544 175:353 177:78 178:852 180:805 181:7
182:409 183:200 184:322 185:1 186:1131 187:832
188:952 189:1031 190:4782 192:5809 193:4838 194:3520
195:3101 196:1221 197:17 198:3592 199:3913 200:5547
201:1501 202:8371 203:8440 204:4131 205:2327 206:2670
207:3028 208:3941 209:3516 210:2728 211:1364 212:2028
213:1771 214:729 215:67 216:4887 217:1664 218:561
219:386 220:1197 221:481 222:311 223:117
End of report
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