Routing Table Report 00:00 GMT Thu 05 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: 361189
Prefixes after maximum aggregation: 162595
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175943
Total ASes present in the Internet Routing Table: 37508
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31374
Origin ASes announcing only one prefix: 15043
Transit ASes present in the Internet Routing Table: 5081
Transit-only ASes present in the Internet Routing Table: 122
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3104
Unregistered ASNs in the Routing Table: 322
Number of 32-bit ASNs allocated by the RIRs: 1325
Number of 32-bit ASNs visible in the Routing Table: 1053
Prefixes from 32-bit ASNs in the Routing Table: 2393
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 214
Number of addresses announced to Internet: 2423527929
Equivalent to 144 /8s, 116 /16s and 25 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 149832
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87136
Total APNIC prefixes after maximum aggregation: 28840
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83654
Unique aggregates announced from the APNIC address blocks: 36890
APNIC Region origin ASes present in the Internet Routing Table: 4418
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1243
APNIC Region transit ASes present in the Internet Routing Table: 697
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 612846017
Equivalent to 36 /8s, 135 /16s and 73 /24s
Percentage of available APNIC address space announced: 77.7
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: 143414
Total ARIN prefixes after maximum aggregation: 73368
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115407
Unique aggregates announced from the ARIN address blocks: 45238
ARIN Region origin ASes present in the Internet Routing Table: 14369
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5475
ARIN Region transit ASes present in the Internet Routing Table: 1471
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: 12
Number of ARIN addresses announced to Internet: 800016920
Equivalent to 47 /8s, 175 /16s and 74 /24s
Percentage of available ARIN address space announced: 63.6
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: 87290
Total RIPE prefixes after maximum aggregation: 48329
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79881
Unique aggregates announced from the RIPE address blocks: 50962
RIPE Region origin ASes present in the Internet Routing Table: 15602
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7766
RIPE Region transit ASes present in the Internet Routing Table: 2479
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 781
Number of RIPE addresses announced to Internet: 468368252
Equivalent to 27 /8s, 234 /16s and 187 /24s
Percentage of available RIPE address space announced: 75.5
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: 32849
Total LACNIC prefixes after maximum aggregation: 7519
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31901
Unique aggregates announced from the LACNIC address blocks: 16631
LACNIC Region origin ASes present in the Internet Routing Table: 1447
LACNIC Prefixes per ASN: 22.05
LACNIC Region origin ASes announcing only one prefix: 425
LACNIC Region transit ASes present in the Internet Routing Table: 264
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: 207
Number of LACNIC addresses announced to Internet: 83090188
Equivalent to 4 /8s, 243 /16s and 219 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7803
Total AfriNIC prefixes after maximum aggregation: 1861
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6142
Unique aggregates announced from the AfriNIC address blocks: 1910
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.77
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.3
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: 23057664
Equivalent to 1 /8s, 95 /16s and 213 /24s
Percentage of available AfriNIC address space announced: 34.4
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 9482 602 Korea Telecom (KIX)
17974 1804 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1520 301 82 TPG Internet Pty Ltd
4755 1458 374 164 Videsh Sanchar Nigam Ltd. Aut
7552 1204 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd.
9583 1057 77 492 Sify Limited
9829 1038 874 51 BSNL National Internet Backbo
17488 960 165 100 Hathway IP Over Cable Interne
4808 957 2023 277 CNCGROUP IP network: China169
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 2597 1103 398 Time Warner Telecom
18566 1807 350 239 Covad Communications
1785 1786 681 128 AppliedTheory Corporation
6478 1665 312 50 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
19262 1497 4949 299 Verizon Global Networks
7018 1361 6943 891 AT&T WorldNet Services
22773 1302 2865 85 Cox Communications, Inc.
2386 1267 535 910 AT&T Data Communications Serv
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 1022 798 175 KPNQwest Backbone AS
9116 540 326 30 Goldenlines main autonomous s
6830 520 1780 321 UPC Distribution Services
3292 517 1997 391 TDC Tele Danmark
34984 508 106 184 Tellcom Iletisim Hizmetleri
29049 449 32 47 AzerSat LLC.
20940 448 131 342 Akamai Technologies European
8866 446 134 26 Bulgarian Telecommunication C
3320 422 7609 367 Deutsche Telekom AG
35819 410 74 10 Bayanat Al-Oula Autonomous Sy
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 1458 270 155 TVCABLE BOGOTA
8151 1368 2679 361 Uninet S.A. de C.V.
28573 1293 990 88 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 801 354 74 AVANTEL, S.A.
14420 667 54 92 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 519 226 98 COLOMBIA TELECOMUNICACIONES S
11172 495 100 84 Alestra
14117 492 46 43 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
8452 882 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 286 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 218 12 10 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 151 441 86 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.
4323 2597 1103 398 Time Warner Telecom
23456 2393 669 1292 >>UNKNOWN<<
4766 1875 9482 602 Korea Telecom (KIX)
18566 1807 350 239 Covad Communications
17974 1804 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 128 AppliedTheory Corporation
6478 1665 312 50 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
7545 1520 301 82 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
4323 2597 2199 Time Warner Telecom
17974 1804 1775 PT TELEKOMUNIKASI INDONESIA
1785 1786 1658 AppliedTheory Corporation
6478 1665 1615 AT&T Worldnet Services
18566 1807 1568 Covad Communications
7545 1520 1438 TPG Internet Pty Ltd
10620 1458 1303 TVCABLE BOGOTA
4755 1458 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1875 1273 Korea Telecom (KIX)
11492 1262 1247 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
31.210.64.0/24 42926 Radore Autonomous System
31.210.65.0/24 42926 Radore Autonomous System
31.210.66.0/24 42926 Radore Autonomous System
31.210.67.0/24 42926 Radore Autonomous System
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 /10:28 /11:78 /12:222
/13:458 /14:795 /15:1416 /16:11807 /17:6019 /18:9990
/19:19742 /20:26311 /21:26121 /22:34357 /23:33265 /24:187874
/25:378 /26:347 /27:172 /28:283 /29:183 /30:605
/31:64 /32:642
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 bellsouth.net, inc.
18566 1775 1807 Covad Communications
6478 1619 1665 AT&T Worldnet Services
10620 1348 1458 TVCABLE BOGOTA
4323 1303 2597 Time Warner Telecom
11492 1211 1262 Cable One
23456 1190 2393 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1054 1786 AppliedTheory Corporation
286 882 1022 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:266 2:72 4:18 5:1 6:3 8:354
12:1992 13:1 14:449 15:15 16:3 17:8
20:10 23:6 24:1637 27:732 31:302 32:126
33:3 34:2 37:1 38:766 40:101 41:2494
42:4 44:3 46:907 47:4 49:172 50:388
52:13 55:4 56:2 57:40 58:845 59:483
60:374 61:1266 62:1008 63:1942 64:3970 65:2318
66:4388 67:1895 68:1255 69:3075 70:745 71:351
72:1925 73:3 74:2422 75:315 76:346 77:877
78:696 79:474 80:1108 81:823 82:510 83:458
84:664 85:1088 86:613 87:775 88:330 89:1630
90:172 91:3747 92:512 93:1072 94:1297 95:804
96:482 97:255 98:845 99:35 101:73 103:9
106:1 107:8 108:84 109:961 110:575 111:705
112:319 113:403 114:528 115:687 116:963 117:676
118:816 119:1144 120:306 121:676 122:1618 123:1081
124:1255 125:1220 128:260 129:166 130:165 131:564
132:110 133:19 134:218 135:49 136:214 137:142
138:303 139:125 140:479 141:238 142:403 143:402
144:487 145:52 146:441 147:219 148:598 149:243
150:171 151:187 152:312 153:179 154:3 155:396
156:190 157:354 158:130 159:384 160:315 161:207
162:279 163:164 164:493 165:367 166:511 167:427
168:718 169:154 170:789 171:76 172:1 173:1560
174:542 175:371 177:111 178:877 180:793 181:19
182:437 183:206 184:342 185:1 186:1154 187:803
188:853 189:943 190:4863 192:5828 193:4869 194:3528
195:3106 196:1213 197:16 198:3577 199:3919 200:5533
201:1523 202:8363 203:8431 204:4149 205:2333 206:2771
207:3047 208:3967 209:3495 210:2735 211:1386 212:2030
213:1777 214:732 215:68 216:4918 217:1659 218:569
219:375 220:1206 221:486 222:342 223:144
End of report
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