Routing Table Report 00:00 GMT Wed 23 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: 386173
Prefixes after maximum aggregation: 168451
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 188160
Total ASes present in the Internet Routing Table: 39395
Prefixes per ASN: 9.80
Origin-only ASes present in the Internet Routing Table: 32506
Origin ASes announcing only one prefix: 15503
Transit ASes present in the Internet Routing Table: 5237
Transit-only ASes present in the Internet Routing Table: 132
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 28
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 5671
Unregistered ASNs in the Routing Table: 917
Number of 32-bit ASNs allocated by the RIRs: 1974
Number of 32-bit ASNs visible in the Routing Table: 1652
Prefixes from 32-bit ASNs in the Routing Table: 3857
Special use prefixes present in the Routing Table: 87
Prefixes being announced from unallocated address space: 85
Number of addresses announced to Internet: 2492675365
Equivalent to 148 /8s, 147 /16s and 53 /24s
Percentage of available address space announced: 67.3
Percentage of allocated address space announced: 67.3
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: 161825
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 93358
Total APNIC prefixes after maximum aggregation: 30175
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 89860
Unique aggregates announced from the APNIC address blocks: 38599
APNIC Region origin ASes present in the Internet Routing Table: 4604
APNIC Prefixes per ASN: 19.52
APNIC Region origin ASes announcing only one prefix: 1281
APNIC Region transit ASes present in the Internet Routing Table: 723
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 109
Number of APNIC addresses announced to Internet: 630284288
Equivalent to 37 /8s, 145 /16s and 96 /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: 148843
Total ARIN prefixes after maximum aggregation: 76737
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120765
Unique aggregates announced from the ARIN address blocks: 48638
ARIN Region origin ASes present in the Internet Routing Table: 14765
ARIN Prefixes per ASN: 8.18
ARIN Region origin ASes announcing only one prefix: 5626
ARIN Region transit ASes present in the Internet Routing Table: 1522
Average ARIN Region AS path length visible: 3.5
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: 803435784
Equivalent to 47 /8s, 227 /16s and 117 /24s
Percentage of available ARIN address space announced: 63.9
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: 94718
Total RIPE prefixes after maximum aggregation: 51414
RIPE Deaggregation factor: 1.84
Prefixes being announced from the RIPE address blocks: 86041
Unique aggregates announced from the RIPE address blocks: 54477
RIPE Region origin ASes present in the Internet Routing Table: 16144
RIPE Prefixes per ASN: 5.33
RIPE Region origin ASes announcing only one prefix: 7987
RIPE Region transit ASes present in the Internet Routing Table: 2518
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1152
Number of RIPE addresses announced to Internet: 492933068
Equivalent to 29 /8s, 97 /16s and 143 /24s
Percentage of available RIPE address space announced: 79.4
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: 36965
Total LACNIC prefixes after maximum aggregation: 8001
LACNIC Deaggregation factor: 4.62
Prefixes being announced from the LACNIC address blocks: 36355
Unique aggregates announced from the LACNIC address blocks: 18635
LACNIC Region origin ASes present in the Internet Routing Table: 1551
LACNIC Prefixes per ASN: 23.44
LACNIC Region origin ASes announcing only one prefix: 449
LACNIC Region transit ASes present in the Internet Routing Table: 286
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 24
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 375
Number of LACNIC addresses announced to Internet: 93234696
Equivalent to 5 /8s, 142 /16s and 166 /24s
Percentage of available LACNIC address space announced: 61.7
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: 8222
Total AfriNIC prefixes after maximum aggregation: 2051
AfriNIC Deaggregation factor: 4.01
Prefixes being announced from the AfriNIC address blocks: 6290
Unique aggregates announced from the AfriNIC address blocks: 2042
AfriNIC Region origin ASes present in the Internet Routing Table: 504
AfriNIC Prefixes per ASN: 12.48
AfriNIC Region origin ASes announcing only one prefix: 160
AfriNIC Region transit ASes present in the Internet Routing Table: 107
Average AfriNIC Region AS path length visible: 4.0
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: 27845120
Equivalent to 1 /8s, 168 /16s and 226 /24s
Percentage of available AfriNIC address space announced: 41.5
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 1954 11102 666 Korea Telecom (KIX)
17974 1642 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1624 303 87 TPG Internet Pty Ltd
4755 1516 376 168 Videsh Sanchar Nigam Ltd. Aut
7552 1389 1064 7 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1094 80 494 Sify Limited
24560 965 343 218 Bharti Airtel Ltd.
18101 951 119 147 Reliance Infocom Ltd Internet
4808 922 1913 266 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 3486 3814 220 bellsouth.net, inc.
7029 2908 1020 199 Windstream Communications Inc
18566 2093 383 177 Covad Communications
1785 1850 680 122 AppliedTheory Corporation
4323 1609 1078 387 Time Warner Telecom
20115 1597 1546 624 Charter Communications
22773 1501 2909 104 Cox Communications, Inc.
30036 1435 257 672 Mediacom Communications Corp
19262 1387 4683 401 Verizon Global Networks
7018 1319 7063 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 1582 480 15 Corbina telecom
286 1097 811 201 KPNQwest Backbone AS
6830 651 1927 412 UPC Distribution Services
34984 604 114 189 Tellcom Iletisim Hizmetleri
20940 563 187 442 Akamai Technologies European
9116 541 326 31 Goldenlines main autonomous s
3292 533 2106 410 TDC Tele Danmark
3320 512 8168 389 Deutsche Telekom AG
12479 486 596 9 Uni2 Autonomous System
8866 463 133 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 315 178 TVCABLE BOGOTA
28573 1507 1045 71 Types of queries are: POCs, o
8151 1487 2952 341 Uninet S.A. de C.V.
7303 1236 751 173 Telecom Argentina Stet-France
27947 620 72 87 Telconet S.A
22047 581 322 17 Types of queries are: POCs, o
6503 569 434 70 AVANTEL, S.A.
7738 553 1050 31 Telecomunicacoes da Bahia S.A
10481 546 429 25 Prima S.A.
3816 544 235 98 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
8452 848 446 12 TEDATA
24863 777 146 34 LINKdotNET AS number
3741 281 939 230 The Internet Solution
15706 242 32 6 Sudatel Internet Exchange Aut
6713 235 519 14 Itissalat Al-MAGHRIB
29571 218 17 13 Ci Telecom Autonomous system
33776 217 13 14 Starcomms Nigeria Limited
12258 197 28 58 YEBO-AS
24835 192 80 8 RAYA Telecom - Egypt
36923 159 20 4 Swift Networks Limited
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 3486 3814 220 bellsouth.net, inc.
7029 2908 1020 199 Windstream Communications Inc
18566 2093 383 177 Covad Communications
4766 1954 11102 666 Korea Telecom (KIX)
1785 1850 680 122 AppliedTheory Corporation
10620 1699 315 178 TVCABLE BOGOTA
17974 1642 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1624 303 87 TPG Internet Pty Ltd
4323 1609 1078 387 Time Warner Telecom
20115 1597 1546 624 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 2908 2709 Windstream Communications Inc
18566 2093 1916 Covad Communications
1785 1850 1728 AppliedTheory Corporation
17974 1642 1606 PT TELEKOMUNIKASI INDONESIA
8402 1582 1567 Corbina telecom
7545 1624 1537 TPG Internet Pty Ltd
10620 1699 1521 TVCABLE BOGOTA
28573 1507 1436 Types of queries are: POCs, o
22773 1501 1397 Cox Communications, Inc.
7552 1389 1382 Vietel Corporation
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 37345 MEDALLION Communications
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 /14:813 /15:1459 /16:12167 /17:6342 /18:10412
/19:20551 /20:28867 /21:28295 /22:38373 /23:35992 /24:200329
/25:67 /26:85 /27:111 /28:287 /29:113 /30:528
/31:53 /32:488
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2539 2908 Windstream Communications Inc
6389 2127 3486 bellsouth.net, inc.
18566 2042 2093 Covad Communications
10620 1594 1699 TVCABLE BOGOTA
8402 1558 1582 Corbina telecom
30036 1395 1435 Mediacom Communications Corp
11492 1118 1155 Cable One
1785 1058 1850 AppliedTheory Corporation
7011 1051 1168 Citizens Utilities
22773 961 1501 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:419 2:491 4:19 5:1 6:3 8:359
12:1960 13:1 14:555 15:11 16:3 17:7
20:9 23:69 24:1697 27:1026 31:722 32:120
33:2 34:2 36:4 38:768 39:1 40:109
41:2809 42:64 43:1 44:3 46:1060 47:3
49:297 50:457 52:13 55:7 56:2 57:59
58:930 59:487 60:360 61:1171 62:907 63:1982
64:4097 65:2303 66:4365 67:2045 68:1357 69:3258
70:954 71:355 72:1846 73:1 74:2705 75:445
76:332 77:896 78:898 79:461 80:1147 81:845
82:526 83:526 84:481 85:1153 86:412 87:911
88:360 89:1605 90:237 91:4293 92:539 93:1448
94:1317 95:1119 96:433 97:285 98:781 99:37
101:245 103:511 106:1 107:95 108:89 109:1202
110:679 111:809 112:364 113:500 114:628 115:717
116:904 117:720 118:900 119:1312 120:354 121:689
122:1558 123:1027 124:1367 125:1351 128:270 129:187
130:174 131:634 132:155 133:21 134:230 135:54
136:211 137:146 138:285 139:133 140:493 141:250
142:387 143:412 144:498 145:65 146:475 147:230
148:693 149:273 150:164 151:191 152:448 153:172
154:6 155:390 156:208 157:359 158:156 159:496
160:333 161:214 162:370 163:175 164:518 165:389
166:540 167:448 168:828 169:147 170:823 171:87
172:4 173:1768 174:594 175:436 176:321 177:396
178:1128 180:1186 181:39 182:668 183:246 184:394
185:1 186:1422 187:783 188:991 189:1152 190:5213
192:5958 193:5072 194:3580 195:3131 196:1284 197:167
198:3629 199:4233 200:5526 201:1710 202:8570 203:8564
204:4312 205:2403 206:2689 207:2841 208:4038 209:3613
210:2753 211:1477 212:2069 213:1816 214:804 215:96
216:4952 217:1484 218:581 219:341 220:1260 221:523
222:327 223:281
End of report
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