Routing Table Report 00:00 GMT Wed 02 Nov, 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: 383162
Prefixes after maximum aggregation: 167425
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 186763
Total ASes present in the Internet Routing Table: 39218
Prefixes per ASN: 9.77
Origin-only ASes present in the Internet Routing Table: 32355
Origin ASes announcing only one prefix: 15496
Transit ASes present in the Internet Routing Table: 5290
Transit-only ASes present in the Internet Routing Table: 142
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 28
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 5255
Unregistered ASNs in the Routing Table: 863
Number of 32-bit ASNs allocated by the RIRs: 1919
Number of 32-bit ASNs visible in the Routing Table: 1573
Prefixes from 32-bit ASNs in the Routing Table: 3642
Special use prefixes present in the Routing Table: 85
Prefixes being announced from unallocated address space: 86
Number of addresses announced to Internet: 2490011841
Equivalent to 148 /8s, 106 /16s and 144 /24s
Percentage of available address space announced: 67.2
Percentage of allocated address space announced: 67.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.5
Total number of prefixes smaller than registry allocations: 160326
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92541
Total APNIC prefixes after maximum aggregation: 29884
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 89073
Unique aggregates announced from the APNIC address blocks: 38146
APNIC Region origin ASes present in the Internet Routing Table: 4579
APNIC Prefixes per ASN: 19.45
APNIC Region origin ASes announcing only one prefix: 1274
APNIC Region transit ASes present in the Internet Routing Table: 717
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 99
Number of APNIC addresses announced to Internet: 629430784
Equivalent to 37 /8s, 132 /16s and 90 /24s
Percentage of available APNIC address space announced: 79.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 148547
Total ARIN prefixes after maximum aggregation: 76490
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120191
Unique aggregates announced from the ARIN address blocks: 48232
ARIN Region origin ASes present in the Internet Routing Table: 14737
ARIN Prefixes per ASN: 8.16
ARIN Region origin ASes announcing only one prefix: 5630
ARIN Region transit ASes present in the Internet Routing Table: 1554
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804828440
Equivalent to 47 /8s, 248 /16s and 181 /24s
Percentage of available ARIN address space announced: 64.0
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: 93248
Total RIPE prefixes after maximum aggregation: 50984
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 85035
Unique aggregates announced from the RIPE address blocks: 54335
RIPE Region origin ASes present in the Internet Routing Table: 16097
RIPE Prefixes per ASN: 5.28
RIPE Region origin ASes announcing only one prefix: 7978
RIPE Region transit ASes present in the Internet Routing Table: 2546
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1100
Number of RIPE addresses announced to Internet: 491516364
Equivalent to 29 /8s, 75 /16s and 241 /24s
Percentage of available RIPE address space announced: 79.2
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: 36458
Total LACNIC prefixes after maximum aggregation: 7952
LACNIC Deaggregation factor: 4.58
Prefixes being announced from the LACNIC address blocks: 35778
Unique aggregates announced from the LACNIC address blocks: 18527
LACNIC Region origin ASes present in the Internet Routing Table: 1548
LACNIC Prefixes per ASN: 23.11
LACNIC Region origin ASes announcing only one prefix: 453
LACNIC Region transit ASes present in the Internet Routing Table: 285
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 358
Number of LACNIC addresses announced to Internet: 92762120
Equivalent to 5 /8s, 135 /16s and 112 /24s
Percentage of available LACNIC address space announced: 61.4
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: 8548
Total AfriNIC prefixes after maximum aggregation: 2039
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6669
Unique aggregates announced from the AfriNIC address blocks: 1988
AfriNIC Region origin ASes present in the Internet Routing Table: 498
AfriNIC Prefixes per ASN: 13.39
AfriNIC Region origin ASes announcing only one prefix: 161
AfriNIC Region transit ASes present in the Internet Routing Table: 113
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: 4
Number of AfriNIC addresses announced to Internet: 27919104
Equivalent to 1 /8s, 170 /16s and 3 /24s
Percentage of available AfriNIC address space announced: 41.6
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 1947 11121 664 Korea Telecom (KIX)
17974 1628 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1611 303 87 TPG Internet Pty Ltd
4755 1534 377 171 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 8 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
4808 1102 2111 311 CNCGROUP IP network: China169
9583 1092 80 500 Sify Limited
24560 964 342 218 Bharti Airtel Ltd.
18101 953 135 149 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 3544 3814 220 bellsouth.net, inc.
7029 2361 1041 207 Windstream Communications Inc
18566 2094 383 177 Covad Communications
1785 1843 680 123 AppliedTheory Corporation
4323 1622 1093 388 Time Warner Telecom
20115 1596 1547 621 Charter Communications
22773 1460 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1395 253 668 Mediacom Communications Corp
7018 1317 7047 865 AT&T WorldNet Services
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
8402 1533 416 14 Corbina telecom
286 1078 827 202 KPNQwest Backbone AS
6830 653 1927 414 UPC Distribution Services
34984 592 109 181 Tellcom Iletisim Hizmetleri
3292 579 2074 410 TDC Tele Danmark
9116 540 326 31 Goldenlines main autonomous s
20940 536 181 418 Akamai Technologies European
3320 507 8169 387 Deutsche Telekom AG
12479 479 596 9 Uni2 Autonomous System
8866 462 133 26 Bulgarian Telecommunication C
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 1699 314 156 TVCABLE BOGOTA
8151 1470 2910 344 Uninet S.A. de C.V.
28573 1458 1044 73 Types of queries are: POCs, o
7303 1236 751 171 Telecom Argentina Stet-France
27947 603 72 85 Telconet S.A
22047 580 322 17 Types of queries are: POCs, o
6503 579 434 69 AVANTEL, S.A.
7738 552 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 537 233 95 COLOMBIA TELECOMUNICACIONES S
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 799 146 36 LINKdotNET AS number
8452 652 446 12 TEDATA
15475 443 74 8 Nile Online
36992 297 415 21 Etisalat MISR
3741 281 939 230 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
33776 239 13 8 Starcomms Nigeria Limited
29571 219 18 14 Ci Telecom Autonomous system
12258 197 28 58 YEBO-AS
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 3544 3814 220 bellsouth.net, inc.
7029 2361 1041 207 Windstream Communications Inc
18566 2094 383 177 Covad Communications
4766 1947 11121 664 Korea Telecom (KIX)
1785 1843 680 123 AppliedTheory Corporation
10620 1699 314 156 TVCABLE BOGOTA
17974 1628 511 36 PT TELEKOMUNIKASI INDONESIA
4323 1622 1093 388 Time Warner Telecom
7545 1611 303 87 TPG Internet Pty Ltd
20115 1596 1547 621 Charter Communications
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 2361 2154 Windstream Communications Inc
18566 2094 1917 Covad Communications
1785 1843 1720 AppliedTheory Corporation
17974 1628 1592 PT TELEKOMUNIKASI INDONESIA
10620 1699 1543 TVCABLE BOGOTA
7545 1611 1524 TPG Internet Pty Ltd
8402 1533 1519 Corbina telecom
28573 1458 1385 Types of queries are: POCs, o
7552 1393 1385 Vietel Corporation
4755 1534 1363 Videsh Sanchar Nigam Ltd. Aut
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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 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
10.0.1.0/24 286 KPNQwest Backbone AS
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
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
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 /10:27 /11:81 /12:236
/13:465 /14:814 /15:1454 /16:12146 /17:6316 /18:10414
/19:20478 /20:28705 /21:27939 /22:37417 /23:35661 /24:199265
/25:68 /26:87 /27:117 /28:281 /29:110 /30:482
/31:52 /32:515
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2184 3544 bellsouth.net, inc.
18566 2043 2094 Covad Communications
7029 2014 2361 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1509 1533 Corbina telecom
30036 1356 1395 Mediacom Communications Corp
11492 1117 1155 Cable One
1785 1056 1843 AppliedTheory Corporation
7011 1050 1168 Citizens Utilities
22773 948 1460 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:417 2:489 4:19 5:1 6:3 8:361
10:1 12:1956 13:1 14:544 15:11 16:3
17:7 20:9 23:59 24:1684 27:970 31:662
32:146 33:2 34:2 36:4 38:758 39:1
40:110 41:2695 42:53 44:3 46:1023 47:3
49:299 50:444 52:13 55:7 56:2 57:56
58:896 59:491 60:362 61:1127 62:1099 63:1982
64:4074 65:2303 66:4297 67:2017 68:1330 69:3310
70:928 71:383 72:1834 73:1 74:2660 75:405
76:324 77:880 78:868 79:477 80:1141 81:832
82:534 83:532 84:628 85:1149 86:411 87:923
88:359 89:1616 90:237 91:4252 92:531 93:1545
94:1307 95:1120 96:430 97:286 98:936 99:37
101:222 103:417 106:70 107:79 108:76 109:1057
110:665 111:797 112:339 113:487 114:619 115:709
116:911 117:721 118:889 119:1264 120:340 121:714
122:1561 123:1012 124:1328 125:1352 128:245 129:192
130:163 131:629 132:148 133:21 134:221 135:54
136:213 137:140 138:286 139:136 140:488 141:316
142:389 143:414 144:494 145:64 146:467 147:229
148:696 149:267 150:164 151:194 152:447 153:178
154:7 155:382 156:208 157:361 158:154 159:485
160:333 161:214 162:371 163:173 164:511 165:386
166:539 167:439 168:744 169:146 170:880 171:86
172:4 173:1718 174:679 175:431 176:282 177:362
178:1081 180:1140 181:36 182:655 183:223 184:383
185:1 186:1324 187:773 188:958 189:1134 190:5161
192:5957 193:5062 194:3580 195:3135 196:1232 197:166
198:3637 199:4173 200:5530 201:1703 202:8570 203:8484
204:4308 205:2374 206:2698 207:2839 208:4037 209:3610
210:2744 211:1467 212:2123 213:1789 214:805 215:97
216:4940 217:1608 218:568 219:342 220:1263 221:516
222:324 223:264
End of report