Routing Table Report 00:00 GMT Fri 04 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: 383713
Prefixes after maximum aggregation: 167676
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 187143
Total ASes present in the Internet Routing Table: 39247
Prefixes per ASN: 9.78
Origin-only ASes present in the Internet Routing Table: 32339
Origin ASes announcing only one prefix: 15508
Transit ASes present in the Internet Routing Table: 5319
Transit-only ASes present in the Internet Routing Table: 145
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: 5311
Unregistered ASNs in the Routing Table: 875
Number of 32-bit ASNs allocated by the RIRs: 1923
Number of 32-bit ASNs visible in the Routing Table: 1589
Prefixes from 32-bit ASNs in the Routing Table: 3678
Special use prefixes present in the Routing Table: 85
Prefixes being announced from unallocated address space: 88
Number of addresses announced to Internet: 2490562754
Equivalent to 148 /8s, 114 /16s and 248 /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: 160600
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92673
Total APNIC prefixes after maximum aggregation: 29926
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 89212
Unique aggregates announced from the APNIC address blocks: 38217
APNIC Region origin ASes present in the Internet Routing Table: 4586
APNIC Prefixes per ASN: 19.45
APNIC Region origin ASes announcing only one prefix: 1281
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: 100
Number of APNIC addresses announced to Internet: 629892096
Equivalent to 37 /8s, 139 /16s and 100 /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: 148597
Total ARIN prefixes after maximum aggregation: 76491
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120288
Unique aggregates announced from the ARIN address blocks: 48271
ARIN Region origin ASes present in the Internet Routing Table: 14735
ARIN Prefixes per ASN: 8.16
ARIN Region origin ASes announcing only one prefix: 5633
ARIN Region transit ASes present in the Internet Routing Table: 1548
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: 804712728
Equivalent to 47 /8s, 246 /16s and 241 /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: 93669
Total RIPE prefixes after maximum aggregation: 51179
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 85307
Unique aggregates announced from the RIPE address blocks: 54531
RIPE Region origin ASes present in the Internet Routing Table: 16104
RIPE Prefixes per ASN: 5.30
RIPE Region origin ASes announcing only one prefix: 7983
RIPE Region transit ASes present in the Internet Routing Table: 2552
Average RIPE Region AS path length visible: 4.1
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: 491971788
Equivalent to 29 /8s, 82 /16s and 228 /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: 36282
Total LACNIC prefixes after maximum aggregation: 7949
LACNIC Deaggregation factor: 4.56
Prefixes being announced from the LACNIC address blocks: 35693
Unique aggregates announced from the LACNIC address blocks: 18538
LACNIC Region origin ASes present in the Internet Routing Table: 1543
LACNIC Prefixes per ASN: 23.13
LACNIC Region origin ASes announcing only one prefix: 451
LACNIC Region transit ASes present in the Internet Routing Table: 288
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 364
Number of LACNIC addresses announced to Internet: 92780808
Equivalent to 5 /8s, 135 /16s and 185 /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: 8605
Total AfriNIC prefixes after maximum aggregation: 2055
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6684
Unique aggregates announced from the AfriNIC address blocks: 2003
AfriNIC Region origin ASes present in the Internet Routing Table: 501
AfriNIC Prefixes per ASN: 13.34
AfriNIC Region origin ASes announcing only one prefix: 160
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: 27614720
Equivalent to 1 /8s, 165 /16s and 94 /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 1543 636 171 Videsh Sanchar Nigam Ltd. Aut
7552 1394 1064 7 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
9583 1092 80 500 Sify Limited
4808 1043 2034 291 CNCGROUP IP network: China169
24560 964 343 218 Bharti Airtel Ltd.
18101 953 134 149 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 3543 3814 220 bellsouth.net, inc.
7029 2367 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 1461 2923 101 Cox Communications, Inc.
30036 1401 253 670 Mediacom Communications Corp
19262 1395 4728 400 Verizon Global Networks
7018 1318 7046 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 1448 416 14 Corbina telecom
286 1083 827 205 KPNQwest Backbone AS
6830 651 1927 414 UPC Distribution Services
34984 596 110 184 Tellcom Iletisim Hizmetleri
3292 583 2074 412 TDC Tele Danmark
20940 551 186 431 Akamai Technologies European
12479 547 628 51 Uni2 Autonomous System
9116 541 326 31 Goldenlines main autonomous s
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 1442 1043 79 Types of queries are: POCs, o
8151 1433 2919 346 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 566 434 68 AVANTEL, S.A.
7738 550 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 304 415 21 Etisalat MISR
3741 282 939 231 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
33776 230 13 10 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 3543 3814 220 bellsouth.net, inc.
7029 2367 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 2367 2156 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 1448 1434 Corbina telecom
7552 1394 1387 Vietel Corporation
4755 1543 1372 Videsh Sanchar Nigam Ltd. Aut
28573 1442 1363 Types of queries are: POCs, o
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 /15:1455 /16:12145 /17:6306 /18:10420
/19:20479 /20:28698 /21:28089 /22:37485 /23:35718 /24:199610
/25:67 /26:87 /27:115 /28:231 /29:109 /30:474
/31:52 /32:517
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2184 3543 bellsouth.net, inc.
18566 2044 2095 Covad Communications
7029 2026 2367 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1424 1448 Corbina telecom
30036 1362 1401 Mediacom Communications Corp
11492 1117 1155 Cable One
1785 1057 1845 AppliedTheory Corporation
7011 1053 1171 Citizens Utilities
22773 948 1461 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 2:484 4:19 5:1 6:3 8:362
12:1959 13:1 14:544 15:11 16:3 17:7
20:9 23:59 24:1686 27:980 31:679 32:150
33:2 34:2 36:4 38:760 39:1 40:110
41:2699 42:56 44:3 46:1025 47:3 49:299
50:445 52:13 55:6 56:2 57:57 58:907
59:495 60:362 61:1133 62:1097 63:1983 64:4074
65:2305 66:4312 67:2032 68:1344 69:3293 70:927
71:384 72:1835 73:1 74:2659 75:401 76:325
77:882 78:879 79:479 80:1155 81:848 82:535
83:533 84:629 85:1152 86:407 87:933 88:361
89:1612 90:237 91:4259 92:537 93:1537 94:1308
95:1097 96:430 97:286 98:944 99:37 101:225
103:423 106:70 107:83 108:76 109:1167 110:665
111:799 112:342 113:486 114:622 115:713 116:911
117:723 118:891 119:1257 120:343 121:708 122:1567
123:1006 124:1352 125:1356 128:245 129:193 130:165
131:626 132:148 133:21 134:222 135:54 136:212
137:133 138:286 139:136 140:486 141:317 142:392
143:407 144:491 145:64 146:467 147:224 148:656
149:266 150:165 151:194 152:446 153:178 154:7
155:385 156:208 157:362 158:154 159:485 160:333
161:215 162:371 163:173 164:507 165:386 166:542
167:441 168:821 169:146 170:880 171:86 172:4
173:1723 174:684 175:430 176:276 177:369 178:1091
180:1146 181:38 182:657 183:221 184:388 185:1
186:1302 187:775 188:1011 189:1140 190:5116 192:5958
193:5065 194:3576 195:3137 196:1260 197:167 198:3635
199:4165 200:5514 201:1682 202:8583 203:8491 204:4311
205:2376 206:2698 207:2818 208:4053 209:3613 210:2742
211:1466 212:2131 213:1789 214:805 215:96 216:4933
217:1607 218:568 219:343 220:1261 221:514 222:324
223:269
End of report
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