Routing Table Report 00:00 GMT Thu 24 Mar, 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: 355099
Prefixes after maximum aggregation: 160571
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173275
Total ASes present in the Internet Routing Table: 37071
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31138
Origin ASes announcing only one prefix: 14938
Transit ASes present in the Internet Routing Table: 5013
Transit-only ASes present in the Internet Routing Table: 119
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2540
Unregistered ASNs in the Routing Table: 242
Number of 32-bit ASNs allocated by the RIRs: 1219
Number of 32-bit ASNs visible in the Routing Table: 920
Prefixes from 32-bit ASNs in the Routing Table: 1997
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 208
Number of addresses announced to Internet: 2390425050
Equivalent to 142 /8s, 122 /16s and 253 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.6
Total number of prefixes smaller than registry allocations: 146613
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85534
Total APNIC prefixes after maximum aggregation: 28696
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 82534
Unique aggregates announced from the APNIC address blocks: 36536
APNIC Region origin ASes present in the Internet Routing Table: 4351
APNIC Prefixes per ASN: 18.97
APNIC Region origin ASes announcing only one prefix: 1226
APNIC Region transit ASes present in the Internet Routing Table: 676
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 600195265
Equivalent to 35 /8s, 198 /16s and 64 /24s
Percentage of available APNIC address space announced: 76.1
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: 141513
Total ARIN prefixes after maximum aggregation: 72766
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113647
Unique aggregates announced from the ARIN address blocks: 44780
ARIN Region origin ASes present in the Internet Routing Table: 14289
ARIN Prefixes per ASN: 7.95
ARIN Region origin ASes announcing only one prefix: 5417
ARIN Region transit ASes present in the Internet Routing Table: 1451
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797143064
Equivalent to 47 /8s, 131 /16s and 112 /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: 85891
Total RIPE prefixes after maximum aggregation: 47653
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 78462
Unique aggregates announced from the RIPE address blocks: 49951
RIPE Region origin ASes present in the Internet Routing Table: 15463
RIPE Prefixes per ASN: 5.07
RIPE Region origin ASes announcing only one prefix: 7731
RIPE Region transit ASes present in the Internet Routing Table: 2463
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 682
Number of RIPE addresses announced to Internet: 465161947
Equivalent to 27 /8s, 185 /16s and 206 /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: 32347
Total LACNIC prefixes after maximum aggregation: 7378
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31297
Unique aggregates announced from the LACNIC address blocks: 16246
LACNIC Region origin ASes present in the Internet Routing Table: 1437
LACNIC Prefixes per ASN: 21.78
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 178
Number of LACNIC addresses announced to Internet: 81418380
Equivalent to 4 /8s, 218 /16s and 88 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7550
Total AfriNIC prefixes after maximum aggregation: 1806
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5931
Unique aggregates announced from the AfriNIC address blocks: 1801
AfriNIC Region origin ASes present in the Internet Routing Table: 436
AfriNIC Prefixes per ASN: 13.60
AfriNIC Region origin ASes announcing only one prefix: 130
AfriNIC Region transit ASes present in the Internet Routing Table: 95
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 22659584
Equivalent to 1 /8s, 89 /16s and 194 /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 1850 9500 591 Korea Telecom (KIX)
7545 1554 301 85 TPG Internet Pty Ltd
4755 1479 393 156 Videsh Sanchar Nigam Ltd. Aut
17974 1449 472 35 PT TELEKOMUNIKASI INDONESIA
24560 1130 321 203 Bharti Airtel Ltd.
9583 1045 76 495 Sify Limited
9829 1004 868 53 BSNL National Internet Backbo
4808 955 2036 278 CNCGROUP IP network: China169
17488 951 162 96 Hathway IP Over Cable Interne
18101 939 116 142 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 3676 3838 257 bellsouth.net, inc.
4323 2566 1109 402 Time Warner Telecom
1785 1794 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1543 647 Charter Communications
6478 1566 302 34 AT&T Worldnet Services
19262 1488 4935 304 Verizon Global Networks
7018 1362 6819 890 AT&T WorldNet Services
11492 1323 240 15 Cable One
22773 1287 2865 80 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 1007 796 167 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 515 1780 317 UPC Distribution Services
3292 509 2013 391 TDC Tele Danmark
34984 454 95 205 Tellcom Iletisim Hizmetleri
8866 444 133 24 Bulgarian Telecommunication C
8402 424 320 32 Corbina telecom
20940 419 100 322 Akamai Technologies European
9198 412 267 15 Kazakhtelecom Corporate Sales
3320 408 7604 355 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 1393 260 159 TVCABLE BOGOTA
28573 1249 969 83 Types of queries are: POCs, o
8151 1236 2653 369 Uninet S.A. de C.V.
6503 1186 354 74 AVANTEL, S.A.
7303 901 464 137 Telecom Argentina Stet-France
14420 638 52 91 Types of queries are: POCs, o
22047 539 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
13489 494 213 104 Orbitel S.A. E.S.P.
11172 488 99 82 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 774 147 39 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 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 3676 3838 257 bellsouth.net, inc.
4323 2566 1109 402 Time Warner Telecom
23456 1997 487 1087 >>UNKNOWN<<
4766 1850 9500 591 Korea Telecom (KIX)
1785 1794 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1543 647 Charter Communications
6478 1566 302 34 AT&T Worldnet Services
7545 1554 301 85 TPG Internet Pty Ltd
19262 1488 4935 304 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 2566 2164 Time Warner Telecom
1785 1794 1663 AppliedTheory Corporation
6478 1566 1532 AT&T Worldnet Services
7545 1554 1469 TPG Internet Pty Ltd
17974 1449 1414 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1479 1323 Videsh Sanchar Nigam Ltd. Aut
11492 1323 1308 Cable One
4766 1850 1259 Korea Telecom (KIX)
10620 1393 1234 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 2.57.0.0/16 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
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
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
31.47.96.0/20 8251 Sdruzeni Klfree.net
31.47.112.0/20 16285 Ural-TransTeleCom Autonomous
31.47.232.0/21 34549 Laxin IT-Services GmbH & Co.
31.186.32.0/21 48142 Permanet Ltd
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 /12:218
/13:448 /14:771 /15:1398 /16:11686 /17:5929 /18:9727
/19:19561 /20:25345 /21:25567 /22:34004 /23:32626 /24:185101
/25:351 /26:340 /27:189 /28:178 /29:187 /30:664
/31:55 /32:623
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3676 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1520 1566 AT&T Worldnet Services
4323 1375 2566 Time Warner Telecom
10620 1284 1393 TVCABLE BOGOTA
11492 1271 1323 Cable One
23456 1090 1997 >>UNKNOWN<<
7011 1063 1164 Citizens Utilities
1785 1056 1794 AppliedTheory Corporation
6503 961 1186 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:286 2:78 4:18 5:1 8:347 12:2027
13:1 14:426 15:15 16:3 17:8 20:9
23:3 24:1586 27:687 31:14 32:127 33:3
34:2 37:1 38:749 39:1 40:101 41:2310
44:3 46:745 47:4 49:142 50:118 52:13
55:4 56:2 57:43 58:817 59:498 60:386
61:1167 62:991 63:1925 64:3896 65:2360 66:4376
67:1822 68:1256 69:3002 70:736 71:365 72:1930
73:3 74:2380 75:298 76:352 77:856 78:698
79:465 80:1101 81:827 82:527 83:472 84:660
85:1051 86:532 87:794 88:346 89:1595 90:175
91:3653 92:489 93:1055 94:1259 95:797 96:451
97:252 98:814 99:34 101:49 106:1 107:4
108:77 109:930 110:519 111:702 112:324 113:376
114:513 115:716 116:987 117:674 118:731 119:1086
120:282 121:768 122:1620 123:1055 124:1343 125:1249
128:266 129:175 130:173 131:565 132:100 133:20
134:217 135:49 136:212 137:143 138:299 139:127
140:484 141:173 142:382 143:392 144:473 145:52
146:440 147:204 148:625 149:265 150:163 151:187
152:298 153:180 154:3 155:388 156:184 157:348
158:131 159:372 160:313 161:207 162:278 163:165
164:494 165:368 166:500 167:414 168:715 169:159
170:772 171:70 172:2 173:1266 174:524 175:349
177:58 178:822 180:795 181:4 182:395 183:233
184:310 185:1 186:1105 187:879 188:914 189:1028
190:4742 192:5797 193:4812 194:3540 195:3078 196:1199
197:15 198:3580 199:3883 200:5580 201:1587 202:8400
203:8498 204:4123 205:2322 206:2660 207:3030 208:3920
209:3494 210:2726 211:1364 212:2003 213:1746 214:758
215:66 216:4903 217:1649 218:559 219:383 220:1190
221:480 222:339 223:99
End of report
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