Routing Table Report 00:00 GMT Fri 25 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: 355675
Prefixes after maximum aggregation: 160780
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173493
Total ASes present in the Internet Routing Table: 37087
Prefixes per ASN: 9.59
Origin-only ASes present in the Internet Routing Table: 31143
Origin ASes announcing only one prefix: 14935
Transit ASes present in the Internet Routing Table: 5017
Transit-only ASes present in the Internet Routing Table: 121
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2557
Unregistered ASNs in the Routing Table: 245
Number of 32-bit ASNs allocated by the RIRs: 1228
Number of 32-bit ASNs visible in the Routing Table: 927
Prefixes from 32-bit ASNs in the Routing Table: 2012
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 4823
Number of addresses announced to Internet: 2390981051
Equivalent to 142 /8s, 131 /16s and 121 /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: 87.8
Total number of prefixes smaller than registry allocations: 147009
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85608
Total APNIC prefixes after maximum aggregation: 28768
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 77967
Unique aggregates announced from the APNIC address blocks: 35297
APNIC Region origin ASes present in the Internet Routing Table: 4351
APNIC Prefixes per ASN: 17.92
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 679
Average APNIC Region AS path length visible: 5.0
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: 542432961
Equivalent to 32 /8s, 84 /16s and 222 /24s
Percentage of available APNIC address space announced: 68.8
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: 141568
Total ARIN prefixes after maximum aggregation: 72792
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113730
Unique aggregates announced from the ARIN address blocks: 44809
ARIN Region origin ASes present in the Internet Routing Table: 14287
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5415
ARIN Region transit ASes present in the Internet Routing Table: 1461
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: 797137944
Equivalent to 47 /8s, 131 /16s and 92 /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: 86080
Total RIPE prefixes after maximum aggregation: 47701
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 78615
Unique aggregates announced from the RIPE address blocks: 49952
RIPE Region origin ASes present in the Internet Routing Table: 15470
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7733
RIPE Region transit ASes present in the Internet Routing Table: 2446
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 686
Number of RIPE addresses announced to Internet: 465300412
Equivalent to 27 /8s, 187 /16s and 235 /24s
Percentage of available RIPE address space announced: 75.0
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: 32506
Total LACNIC prefixes after maximum aggregation: 7418
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31440
Unique aggregates announced from the LACNIC address blocks: 16229
LACNIC Region origin ASes present in the Internet Routing Table: 1438
LACNIC Prefixes per ASN: 21.86
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 265
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 180
Number of LACNIC addresses announced to Internet: 81443212
Equivalent to 4 /8s, 218 /16s and 185 /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: 7641
Total AfriNIC prefixes after maximum aggregation: 1819
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6001
Unique aggregates announced from the AfriNIC address blocks: 1850
AfriNIC Region origin ASes present in the Internet Routing Table: 437
AfriNIC Prefixes per ASN: 13.73
AfriNIC Region origin ASes announcing only one prefix: 130
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22667776
Equivalent to 1 /8s, 89 /16s and 226 /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 1851 9501 592 Korea Telecom (KIX)
7545 1549 301 82 TPG Internet Pty Ltd
4755 1479 393 156 Videsh Sanchar Nigam Ltd. Aut
17974 1451 472 35 PT TELEKOMUNIKASI INDONESIA
24560 1130 321 203 Bharti Airtel Ltd.
9583 1054 77 492 Sify Limited
9829 1002 868 53 BSNL National Internet Backbo
4808 957 2036 280 CNCGROUP IP network: China169
17488 950 162 98 Hathway IP Over Cable Interne
18101 938 116 142 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 3674 3838 258 bellsouth.net, inc.
4323 2563 1109 401 Time Warner Telecom
1785 1794 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1581 1543 650 Charter Communications
6478 1566 302 34 AT&T Worldnet Services
19262 1488 4935 304 Verizon Global Networks
7018 1359 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 1008 796 167 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 515 1780 317 UPC Distribution Services
3292 510 2013 392 TDC Tele Danmark
34984 450 93 202 Tellcom Iletisim Hizmetleri
8866 444 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Corporate Sales
20940 418 100 322 Akamai Technologies European
8402 415 320 32 Corbina telecom
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
8151 1364 2674 369 Uninet S.A. de C.V.
28573 1251 970 83 Types of queries are: POCs, o
6503 1219 354 73 AVANTEL, S.A.
7303 901 464 137 Telecom Argentina Stet-France
14420 638 52 91 Types of queries are: POCs, o
22047 558 310 15 Types of queries are: POCs, o
3816 516 225 97 COLOMBIA TELECOMUNICACIONES S
13489 493 213 109 Orbitel S.A. E.S.P.
11172 488 83 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 843 445 11 TEDATA
24863 772 147 40 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 213 199 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 3674 3838 258 bellsouth.net, inc.
4323 2563 1109 401 Time Warner Telecom
23456 2012 490 1092 >>UNKNOWN<<
4766 1851 9501 592 Korea Telecom (KIX)
1785 1794 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1581 1543 650 Charter Communications
6478 1566 302 34 AT&T Worldnet Services
7545 1549 301 82 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 2563 2162 Time Warner Telecom
1785 1794 1663 AppliedTheory Corporation
6478 1566 1532 AT&T Worldnet Services
7545 1549 1467 TPG Internet Pty Ltd
17974 1451 1416 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1479 1323 Videsh Sanchar Nigam Ltd. Aut
11492 1323 1308 Cable One
4766 1851 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 2.56.0.0/16 29632 The NetAssist autono
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 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 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
2.56.0.0/16 44559 >>UNKNOWN<<
24.142.192.0/18 11426 ServiceCo LLC - Road Runner
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
31.47.232.0/21 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 /12:219
/13:448 /14:771 /15:1399 /16:11686 /17:5925 /18:9727
/19:19576 /20:25374 /21:25604 /22:34037 /23:32671 /24:185342
/25:363 /26:345 /27:198 /28:328 /29:189 /30:660
/31:56 /32:626
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2267 3674 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1520 1566 AT&T Worldnet Services
4323 1373 2563 Time Warner Telecom
10620 1284 1393 TVCABLE BOGOTA
11492 1271 1323 Cable One
23456 1092 2012 >>UNKNOWN<<
7011 1063 1164 Citizens Utilities
1785 1056 1794 AppliedTheory Corporation
6503 995 1219 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:289 2:73 4:18 5:1 8:348 12:2026
13:1 14:428 15:15 16:3 17:8 20:9
23:3 24:1585 27:688 31:14 32:126 33:3
34:2 37:1 38:749 39:1 40:101 41:2369
44:3 46:753 47:4 49:146 50:118 52:13
55:4 56:2 57:41 58:820 59:498 60:386
61:1167 62:1018 63:1925 64:3903 65:2356 66:4388
67:1824 68:1256 69:3001 70:746 71:365 72:1927
73:3 74:2386 75:298 76:346 77:851 78:699
79:467 80:1100 81:828 82:526 83:473 84:661
85:1052 86:557 87:795 88:349 89:1597 90:175
91:3661 92:504 93:1055 94:1258 95:800 96:452
97:252 98:815 99:35 101:49 106:1 107:4
108:79 109:935 110:517 111:703 112:323 113:411
114:513 115:718 116:988 117:673 118:733 119:1094
120:278 121:768 122:1622 123:1059 124:1323 125:1253
128:235 129:174 130:173 131:565 132:108 133:20
134:218 135:49 136:211 137:142 138:300 139:125
140:484 141:173 142:382 143:393 144:472 145:52
146:440 147:203 148:626 149:265 150:165 151:187
152:298 153:180 154:3 155:388 156:185 157:348
158:131 159:377 160:313 161:207 162:278 163:165
164:494 165:368 166:499 167:413 168:721 169:156
170:771 171:70 172:2 173:1266 174:525 175:347
177:65 178:768 180:792 181:4 182:404 183:240
184:310 185:1 186:1108 187:891 188:920 189:1029
190:4723 192:5798 193:4813 194:3536 195:3090 196:1222
197:15 198:3604 199:3894 200:5578 201:1593 202:8414
203:8470 204:4121 205:2322 206:2660 207:3026 208:3922
209:3503 210:2738 211:1363 212:2002 213:1765 214:756
215:66 216:4900 217:1647 218:558 219:383 220:1202
221:480 222:315 223:100
End of report
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