Routing Table Report 00:00 GMT Sat 05 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: 384500
Prefixes after maximum aggregation: 167889
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 187223
Total ASes present in the Internet Routing Table: 39240
Prefixes per ASN: 9.80
Origin-only ASes present in the Internet Routing Table: 32327
Origin ASes announcing only one prefix: 15488
Transit ASes present in the Internet Routing Table: 5322
Transit-only ASes present in the Internet Routing Table: 144
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 5322
Unregistered ASNs in the Routing Table: 872
Number of 32-bit ASNs allocated by the RIRs: 1925
Number of 32-bit ASNs visible in the Routing Table: 1591
Prefixes from 32-bit ASNs in the Routing Table: 3682
Special use prefixes present in the Routing Table: 85
Prefixes being announced from unallocated address space: 87
Number of addresses announced to Internet: 2490794546
Equivalent to 148 /8s, 118 /16s and 130 /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: 91.6
Total number of prefixes smaller than registry allocations: 160910
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 93149
Total APNIC prefixes after maximum aggregation: 30114
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 89584
Unique aggregates announced from the APNIC address blocks: 38259
APNIC Region origin ASes present in the Internet Routing Table: 4586
APNIC Prefixes per ASN: 19.53
APNIC Region origin ASes announcing only one prefix: 1275
APNIC Region transit ASes present in the Internet Routing Table: 722
Average APNIC Region AS path length visible: 4.5
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: 629936640
Equivalent to 37 /8s, 140 /16s and 18 /24s
Percentage of available APNIC address space announced: 79.9
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: 148648
Total ARIN prefixes after maximum aggregation: 76525
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120311
Unique aggregates announced from the ARIN address blocks: 48318
ARIN Region origin ASes present in the Internet Routing Table: 14739
ARIN Prefixes per ASN: 8.16
ARIN Region origin ASes announcing only one prefix: 5629
ARIN Region transit ASes present in the Internet Routing Table: 1553
Average ARIN Region AS path length visible: 3.9
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: 804736280
Equivalent to 47 /8s, 247 /16s and 77 /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: 93760
Total RIPE prefixes after maximum aggregation: 51165
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 85356
Unique aggregates announced from the RIPE address blocks: 54512
RIPE Region origin ASes present in the Internet Routing Table: 16099
RIPE Prefixes per ASN: 5.30
RIPE Region origin ASes announcing only one prefix: 7974
RIPE Region transit ASes present in the Internet Routing Table: 2549
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 21
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1109
Number of RIPE addresses announced to Internet: 491963596
Equivalent to 29 /8s, 82 /16s and 196 /24s
Percentage of available RIPE address space announced: 79.3
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: 36484
Total LACNIC prefixes after maximum aggregation: 7975
LACNIC Deaggregation factor: 4.57
Prefixes being announced from the LACNIC address blocks: 35844
Unique aggregates announced from the LACNIC address blocks: 18557
LACNIC Region origin ASes present in the Internet Routing Table: 1543
LACNIC Prefixes per ASN: 23.23
LACNIC Region origin ASes announcing only one prefix: 451
LACNIC Region transit ASes present in the Internet Routing Table: 287
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 367
Number of LACNIC addresses announced to Internet: 92864776
Equivalent to 5 /8s, 137 /16s and 1 /24s
Percentage of available LACNIC address space announced: 61.5
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: 8565
Total AfriNIC prefixes after maximum aggregation: 2034
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6615
Unique aggregates announced from the AfriNIC address blocks: 1974
AfriNIC Region origin ASes present in the Internet Routing Table: 494
AfriNIC Prefixes per ASN: 13.39
AfriNIC Region origin ASes announcing only one prefix: 159
AfriNIC Region transit ASes present in the Internet Routing Table: 114
Average AfriNIC Region AS path length visible: 4.4
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: 27570432
Equivalent to 1 /8s, 164 /16s and 177 /24s
Percentage of available AfriNIC address space announced: 41.1
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 1948 11121 665 Korea Telecom (KIX)
17974 1631 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1610 303 86 TPG Internet Pty Ltd
4755 1542 636 170 Videsh Sanchar Nigam Ltd. Aut
7552 1394 1064 7 Vietel Corporation
9829 1162 989 28 BSNL National Internet Backbo
9583 1093 80 501 Sify Limited
4808 1043 2034 291 CNCGROUP IP network: China169
17488 965 187 207 Hathway IP Over Cable Interne
24560 964 343 218 Bharti Airtel Ltd.
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 3546 3814 223 bellsouth.net, inc.
7029 2366 1042 211 Windstream Communications Inc
18566 2095 383 177 Covad Communications
1785 1845 680 123 AppliedTheory Corporation
4323 1625 1094 390 Time Warner Telecom
20115 1594 1547 620 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
30036 1402 254 671 Mediacom Communications Corp
19262 1395 4728 400 Verizon Global Networks
7018 1320 7046 864 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 1433 416 14 Corbina telecom
286 1084 827 205 KPNQwest Backbone AS
6830 651 1927 414 UPC Distribution Services
34984 596 110 184 Tellcom Iletisim Hizmetleri
20940 560 188 438 Akamai Technologies European
12479 545 628 51 Uni2 Autonomous System
9116 541 326 31 Goldenlines main autonomous s
3292 534 2074 408 TDC Tele Danmark
3320 502 8169 382 Deutsche Telekom AG
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
28573 1473 1043 79 Types of queries are: POCs, o
8151 1464 2918 344 Uninet S.A. de C.V.
7303 1236 751 171 Telecom Argentina Stet-France
27947 602 72 84 Telconet S.A
22047 580 322 17 Types of queries are: POCs, o
6503 576 434 69 AVANTEL, S.A.
7738 551 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 542 233 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 34 LINKdotNET AS number
8452 652 446 12 TEDATA
15475 443 74 8 Nile Online
36992 285 415 21 Etisalat MISR
3741 282 939 231 The Internet Solution
15706 240 32 6 Sudatel Internet Exchange Aut
33776 239 13 8 Starcomms Nigeria Limited
6713 235 519 14 Itissalat Al-MAGHRIB
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 3546 3814 223 bellsouth.net, inc.
7029 2366 1042 211 Windstream Communications Inc
18566 2095 383 177 Covad Communications
4766 1948 11121 665 Korea Telecom (KIX)
1785 1845 680 123 AppliedTheory Corporation
10620 1699 314 156 TVCABLE BOGOTA
17974 1631 511 36 PT TELEKOMUNIKASI INDONESIA
4323 1625 1094 390 Time Warner Telecom
7545 1610 303 86 TPG Internet Pty Ltd
20115 1594 1547 620 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 2366 2155 Windstream Communications Inc
18566 2095 1918 Covad Communications
1785 1845 1722 AppliedTheory Corporation
17974 1631 1595 PT TELEKOMUNIKASI INDONESIA
10620 1699 1543 TVCABLE BOGOTA
7545 1610 1524 TPG Internet Pty Ltd
8402 1433 1419 Corbina telecom
28573 1473 1394 Types of queries are: POCs, o
7552 1394 1387 Vietel Corporation
4755 1542 1372 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
10.29.244.56/29 286 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
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 /14:815 /15:1454 /16:12183 /17:6319 /18:10445
/19:20496 /20:28722 /21:28082 /22:37523 /23:35773 /24:200189
/25:67 /26:86 /27:115 /28:277 /29:108 /30:480
/31:52 /32:473
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2186 3546 bellsouth.net, inc.
18566 2044 2095 Covad Communications
7029 2025 2366 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1409 1433 Corbina telecom
30036 1363 1402 Mediacom Communications Corp
11492 1117 1155 Cable One
1785 1057 1845 AppliedTheory Corporation
7011 1053 1171 Citizens Utilities
22773 950 1462 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:420 2:476 4:19 5:1 6:3 8:362
12:1959 13:1 14:543 15:11 16:3 17:7
20:9 23:58 24:1686 27:1024 31:680 32:150
33:2 34:2 36:4 38:760 39:1 40:110
41:2702 42:56 44:3 46:1026 47:3 49:299
50:445 52:13 55:6 56:2 57:57 58:907
59:497 60:362 61:1125 62:1096 63:1985 64:4077
65:2306 66:4302 67:2032 68:1344 69:3293 70:930
71:384 72:1832 73:1 74:2662 75:401 76:325
77:964 78:875 79:483 80:1134 81:848 82:534
83:529 84:629 85:1154 86:406 87:979 88:361
89:1609 90:235 91:4263 92:537 93:1538 94:1305
95:1091 96:432 97:286 98:944 99:37 101:225
103:433 106:70 107:84 108:76 109:1154 110:666
111:798 112:342 113:486 114:622 115:715 116:910
117:723 118:892 119:1269 120:343 121:715 122:1573
123:1013 124:1352 125:1356 128:246 129:192 130:165
131:628 132:148 133:21 134:222 135:54 136:212
137:142 138:286 139:153 140:489 141:317 142:390
143:412 144:493 145:64 146:467 147:230 148:694
149:267 150:171 151:194 152:447 153:178 154:7
155:385 156:208 157:362 158:154 159:484 160:333
161:214 162:371 163:179 164:511 165:387 166:540
167:441 168:819 169:146 170:880 171:86 172:4
173:1726 174:684 175:428 176:277 177:370 178:1093
180:1144 181:38 182:658 183:221 184:388 185:1
186:1331 187:773 188:1063 189:1145 190:5169 192:5973
193:5067 194:3584 195:3135 196:1279 197:168 198:3636
199:4187 200:5520 201:1687 202:8554 203:8556 204:4316
205:2372 206:2697 207:2826 208:4043 209:3607 210:2812
211:1465 212:2133 213:1788 214:809 215:95 216:4935
217:1607 218:568 219:343 220:1261 221:517 222:324
223:269
End of report