Routing Table Report 00:00 GMT Sat 29 Oct, 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: 382394
Prefixes after maximum aggregation: 167280
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 186188
Total ASes present in the Internet Routing Table: 39198
Prefixes per ASN: 9.76
Origin-only ASes present in the Internet Routing Table: 32385
Origin ASes announcing only one prefix: 15510
Transit ASes present in the Internet Routing Table: 5249
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 5221
Unregistered ASNs in the Routing Table: 853
Number of 32-bit ASNs allocated by the RIRs: 1911
Number of 32-bit ASNs visible in the Routing Table: 1564
Prefixes from 32-bit ASNs in the Routing Table: 3622
Special use prefixes present in the Routing Table: 85
Prefixes being announced from unallocated address space: 95
Number of addresses announced to Internet: 2489703690
Equivalent to 148 /8s, 101 /16s and 221 /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: 159484
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92722
Total APNIC prefixes after maximum aggregation: 29833
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 89280
Unique aggregates announced from the APNIC address blocks: 38044
APNIC Region origin ASes present in the Internet Routing Table: 4579
APNIC Prefixes per ASN: 19.50
APNIC Region origin ASes announcing only one prefix: 1279
APNIC Region transit ASes present in the Internet Routing Table: 718
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: 97
Number of APNIC addresses announced to Internet: 629451008
Equivalent to 37 /8s, 132 /16s and 169 /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: 148255
Total ARIN prefixes after maximum aggregation: 76470
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120073
Unique aggregates announced from the ARIN address blocks: 48186
ARIN Region origin ASes present in the Internet Routing Table: 14747
ARIN Prefixes per ASN: 8.14
ARIN Region origin ASes announcing only one prefix: 5648
ARIN Region transit ASes present in the Internet Routing Table: 1540
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: 804762392
Equivalent to 47 /8s, 247 /16s and 179 /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: 93072
Total RIPE prefixes after maximum aggregation: 50983
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 84808
Unique aggregates announced from the RIPE address blocks: 54325
RIPE Region origin ASes present in the Internet Routing Table: 16089
RIPE Prefixes per ASN: 5.27
RIPE Region origin ASes announcing only one prefix: 7977
RIPE Region transit ASes present in the Internet Routing Table: 2527
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1094
Number of RIPE addresses announced to Internet: 491583940
Equivalent to 29 /8s, 76 /16s and 249 /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: 36073
Total LACNIC prefixes after maximum aggregation: 7926
LACNIC Deaggregation factor: 4.55
Prefixes being announced from the LACNIC address blocks: 35427
Unique aggregates announced from the LACNIC address blocks: 18155
LACNIC Region origin ASes present in the Internet Routing Table: 1540
LACNIC Prefixes per ASN: 23.00
LACNIC Region origin ASes announcing only one prefix: 448
LACNIC Region transit ASes present in the Internet Routing Table: 281
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 357
Number of LACNIC addresses announced to Internet: 92704776
Equivalent to 5 /8s, 134 /16s and 144 /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: 8475
Total AfriNIC prefixes after maximum aggregation: 1991
AfriNIC Deaggregation factor: 4.26
Prefixes being announced from the AfriNIC address blocks: 6628
Unique aggregates announced from the AfriNIC address blocks: 1988
AfriNIC Region origin ASes present in the Internet Routing Table: 496
AfriNIC Prefixes per ASN: 13.36
AfriNIC Region origin ASes announcing only one prefix: 158
AfriNIC Region transit ASes present in the Internet Routing Table: 110
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: 27840000
Equivalent to 1 /8s, 168 /16s and 206 /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 1942 11104 659 Korea Telecom (KIX)
17974 1889 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1610 303 86 TPG Internet Pty Ltd
4755 1532 377 171 Videsh Sanchar Nigam Ltd. Aut
7552 1393 1064 8 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
4808 1111 2138 320 CNCGROUP IP network: China169
9583 1091 80 499 Sify Limited
24560 964 342 218 Bharti Airtel Ltd.
18101 953 166 150 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 2363 1034 210 Windstream Communications Inc
18566 2097 383 177 Covad Communications
1785 1844 680 122 AppliedTheory Corporation
4323 1623 1093 388 Time Warner Telecom
20115 1596 1546 621 Charter Communications
22773 1458 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1393 253 671 Mediacom Communications Corp
7018 1319 7047 862 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 1487 352 13 Corbina telecom
286 1093 827 201 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 590 108 180 Tellcom Iletisim Hizmetleri
20940 555 186 427 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 531 2074 406 TDC Tele Danmark
3320 506 8169 386 Deutsche Telekom AG
12479 479 596 9 Uni2 Autonomous System
8866 461 133 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 1462 1040 72 Types of queries are: POCs, o
8151 1461 2908 348 Uninet S.A. de C.V.
7303 1231 748 177 Telecom Argentina Stet-France
27947 601 72 84 Telconet S.A
6503 583 450 71 AVANTEL, S.A.
22047 580 322 17 Types of queries are: POCs, o
7738 552 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 540 233 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 800 146 34 LINKdotNET AS number
8452 651 446 12 TEDATA
15475 444 74 8 Nile Online
36992 298 415 20 Etisalat MISR
3741 280 939 229 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
33776 221 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 2363 1034 210 Windstream Communications Inc
18566 2097 383 177 Covad Communications
4766 1942 11104 659 Korea Telecom (KIX)
17974 1889 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1844 680 122 AppliedTheory Corporation
10620 1699 314 156 TVCABLE BOGOTA
4323 1623 1093 388 Time Warner Telecom
7545 1610 303 86 TPG Internet Pty Ltd
20115 1596 1546 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 2363 2153 Windstream Communications Inc
18566 2097 1920 Covad Communications
17974 1889 1856 PT TELEKOMUNIKASI INDONESIA
1785 1844 1722 AppliedTheory Corporation
10620 1699 1543 TVCABLE BOGOTA
7545 1610 1524 TPG Internet Pty Ltd
8402 1487 1474 Corbina telecom
28573 1462 1390 Types of queries are: POCs, o
7552 1393 1385 Vietel Corporation
4755 1532 1361 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
41.79.132.0/23 30969 TransAfrica Networks
41.79.132.0/22 30969 TransAfrica Networks
41.79.134.0/23 30969 TransAfrica Networks
41.222.79.0/24 36938 >>UNKNOWN<<
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 /15:1458 /16:12139 /17:6328 /18:10420
/19:20488 /20:28700 /21:27903 /22:37515 /23:35648 /24:198465
/25:67 /26:84 /27:115 /28:278 /29:111 /30:489
/31:53 /32:478
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2184 3544 bellsouth.net, inc.
18566 2046 2097 Covad Communications
7029 2017 2363 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1464 1487 Corbina telecom
30036 1354 1393 Mediacom Communications Corp
11492 1118 1156 Cable One
1785 1056 1844 AppliedTheory Corporation
7011 1050 1168 Citizens Utilities
22773 946 1458 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:415 2:490 4:19 5:1 6:3 8:362
12:1958 13:1 14:546 15:11 16:3 17:7
20:9 23:60 24:1688 27:972 31:626 32:146
33:2 34:2 36:4 38:759 39:1 40:110
41:2677 42:53 44:3 46:1011 47:3 49:291
50:440 52:13 55:6 56:2 57:51 58:888
59:493 60:364 61:1178 62:1097 63:1974 64:4082
65:2310 66:4299 67:2014 68:1329 69:3307 70:929
71:382 72:1834 73:1 74:2657 75:405 76:326
77:880 78:870 79:455 80:1139 81:842 82:515
83:531 84:628 85:1123 86:411 87:895 88:359
89:1626 90:237 91:4256 92:531 93:1538 94:1308
95:1079 96:438 97:284 98:935 99:37 101:220
103:413 106:70 107:78 108:76 109:1063 110:666
111:796 112:334 113:487 114:620 115:710 116:908
117:721 118:915 119:1259 120:339 121:713 122:1568
123:1022 124:1354 125:1361 128:245 129:188 130:165
131:627 132:146 133:21 134:221 135:54 136:213
137:140 138:286 139:136 140:489 141:309 142:392
143:420 144:496 145:64 146:462 147:226 148:695
149:267 150:167 151:194 152:447 153:178 154:7
155:389 156:208 157:359 158:154 159:484 160:331
161:214 162:339 163:173 164:511 165:388 166:373
167:437 168:742 169:147 170:873 171:86 172:4
173:1714 174:650 175:434 176:282 177:352 178:1070
180:1128 181:36 182:658 183:221 184:383 185:1
186:1303 187:712 188:960 189:877 190:5148 192:5941
193:5051 194:3583 195:3137 196:1226 197:165 198:3624
199:4179 200:5523 201:1689 202:8550 203:8496 204:4305
205:2363 206:2698 207:2830 208:4038 209:3605 210:2733
211:1465 212:2136 213:1783 214:792 215:96 216:4936
217:1606 218:567 219:343 220:1252 221:516 222:346
223:271
End of report