Routing Table Report 00:00 GMT Sat 08 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: 379827
Prefixes after maximum aggregation: 169984
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185570
Total ASes present in the Internet Routing Table: 38968
Prefixes per ASN: 9.75
Origin-only ASes present in the Internet Routing Table: 32279
Origin ASes announcing only one prefix: 15495
Transit ASes present in the Internet Routing Table: 5211
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 26
Max AS path prepend of ASN (51310) 23
Prefixes from unregistered ASNs in the Routing Table: 4987
Unregistered ASNs in the Routing Table: 835
Number of 32-bit ASNs allocated by the RIRs: 1832
Number of 32-bit ASNs visible in the Routing Table: 1478
Prefixes from 32-bit ASNs in the Routing Table: 3388
Special use prefixes present in the Routing Table: 95
Prefixes being announced from unallocated address space: 98
Number of addresses announced to Internet: 2484166674
Equivalent to 148 /8s, 17 /16s and 96 /24s
Percentage of available address space announced: 67.0
Percentage of allocated address space announced: 67.0
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: 158176
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92267
Total APNIC prefixes after maximum aggregation: 29594
APNIC Deaggregation factor: 3.12
Prefixes being announced from the APNIC address blocks: 88832
Unique aggregates announced from the APNIC address blocks: 37972
APNIC Region origin ASes present in the Internet Routing Table: 4556
APNIC Prefixes per ASN: 19.50
APNIC Region origin ASes announcing only one prefix: 1264
APNIC Region transit ASes present in the Internet Routing Table: 716
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 90
Number of APNIC addresses announced to Internet: 628505856
Equivalent to 37 /8s, 118 /16s and 61 /24s
Percentage of available APNIC address space announced: 79.7
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: 147567
Total ARIN prefixes after maximum aggregation: 76154
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 119389
Unique aggregates announced from the ARIN address blocks: 47995
ARIN Region origin ASes present in the Internet Routing Table: 14719
ARIN Prefixes per ASN: 8.11
ARIN Region origin ASes announcing only one prefix: 5658
ARIN Region transit ASes present in the Internet Routing Table: 1535
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 805334296
Equivalent to 48 /8s, 0 /16s and 109 /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: 92107
Total RIPE prefixes after maximum aggregation: 50618
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 83920
Unique aggregates announced from the RIPE address blocks: 54261
RIPE Region origin ASes present in the Internet Routing Table: 16018
RIPE Prefixes per ASN: 5.24
RIPE Region origin ASes announcing only one prefix: 7968
RIPE Region transit ASes present in the Internet Routing Table: 2507
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1045
Number of RIPE addresses announced to Internet: 490775756
Equivalent to 29 /8s, 64 /16s and 164 /24s
Percentage of available RIPE address space announced: 79.1
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: 35781
Total LACNIC prefixes after maximum aggregation: 7876
LACNIC Deaggregation factor: 4.54
Prefixes being announced from the LACNIC address blocks: 35039
Unique aggregates announced from the LACNIC address blocks: 18097
LACNIC Region origin ASes present in the Internet Routing Table: 1532
LACNIC Prefixes per ASN: 22.87
LACNIC Region origin ASes announcing only one prefix: 453
LACNIC Region transit ASes present in the Internet Routing Table: 274
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 328
Number of LACNIC addresses announced to Internet: 90626312
Equivalent to 5 /8s, 102 /16s and 217 /24s
Percentage of available LACNIC address space announced: 60.0
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: 8519
Total AfriNIC prefixes after maximum aggregation: 1996
AfriNIC Deaggregation factor: 4.27
Prefixes being announced from the AfriNIC address blocks: 6613
Unique aggregates announced from the AfriNIC address blocks: 1970
AfriNIC Region origin ASes present in the Internet Routing Table: 482
AfriNIC Prefixes per ASN: 13.72
AfriNIC Region origin ASes announcing only one prefix: 152
AfriNIC Region transit ASes present in the Internet Routing Table: 104
Average AfriNIC Region AS path length visible: 4.1
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 3
Number of AfriNIC addresses announced to Internet: 27716608
Equivalent to 1 /8s, 166 /16s and 236 /24s
Percentage of available AfriNIC address space announced: 41.3
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
17974 1962 519 33 PT TELEKOMUNIKASI INDONESIA
4766 1933 11072 655 Korea Telecom (KIX)
7545 1604 303 84 TPG Internet Pty Ltd
4755 1538 378 174 Videsh Sanchar Nigam Ltd. Aut
7552 1394 1064 7 Vietel Corporation
24560 1180 345 206 Bharti Airtel Ltd.
9829 1165 989 28 BSNL National Internet Backbo
9583 1087 80 503 Sify Limited
4808 1044 2071 293 CNCGROUP IP network: China169
18101 953 165 143 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 3552 3817 222 bellsouth.net, inc.
7029 1933 1041 208 Windstream Communications Inc
18566 1915 366 239 Covad Communications
1785 1833 680 121 AppliedTheory Corporation
4323 1626 1099 392 Time Warner Telecom
20115 1592 1541 635 Charter Communications
22773 1458 2907 100 Cox Communications, Inc.
19262 1394 4728 400 Verizon Global Networks
30036 1385 250 676 Mediacom Communications Corp
7018 1340 7066 877 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 1399 352 13 Corbina telecom
286 1073 825 200 KPNQwest Backbone AS
6830 636 1890 410 UPC Distribution Services
34984 577 108 179 Tellcom Iletisim Hizmetleri
20940 546 185 418 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 530 2082 407 TDC Tele Danmark
3320 503 8169 385 Deutsche Telekom AG
12479 480 593 7 Uni2 Autonomous System
8866 460 133 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 1680 310 154 TVCABLE BOGOTA
8151 1452 2820 345 Uninet S.A. de C.V.
28573 1360 1014 68 Types of queries are: POCs, o
7303 1164 683 175 Telecom Argentina Stet-France
14420 756 59 87 Types of queries are: POCs, o
27947 590 72 79 Telconet S.A
6503 585 450 71 AVANTEL, S.A.
22047 579 322 17 Types of queries are: POCs, o
10481 548 430 20 Prima S.A.
3816 539 233 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 812 146 34 LINKdotNET AS number
8452 723 445 11 TEDATA
15475 445 74 8 Nile Online
36992 297 415 19 Etisalat MISR
3741 277 938 229 The Internet Solution
15706 244 32 6 Sudatel Internet Exchange Aut
6713 242 519 14 Itissalat Al-MAGHRIB
12258 199 28 59 YEBO-AS
33776 197 13 13 Starcomms Nigeria Limited
29571 192 17 11 Ci Telecom Autonomous system
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 3552 3817 222 bellsouth.net, inc.
17974 1962 519 33 PT TELEKOMUNIKASI INDONESIA
4766 1933 11072 655 Korea Telecom (KIX)
7029 1933 1041 208 Windstream Communications Inc
18566 1915 366 239 Covad Communications
1785 1833 680 121 AppliedTheory Corporation
10620 1680 310 154 TVCABLE BOGOTA
4323 1626 1099 392 Time Warner Telecom
7545 1604 303 84 TPG Internet Pty Ltd
20115 1592 1541 635 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
17974 1962 1929 PT TELEKOMUNIKASI INDONESIA
7029 1933 1725 Windstream Communications Inc
1785 1833 1712 AppliedTheory Corporation
18566 1915 1676 Covad Communications
10620 1680 1526 TVCABLE BOGOTA
7545 1604 1520 TPG Internet Pty Ltd
7552 1394 1387 Vietel Corporation
8402 1399 1386 Corbina telecom
4755 1538 1364 Videsh Sanchar Nigam Ltd. Aut
22773 1458 1358 Cox Communications, Inc.
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 /11:82 /12:235
/13:464 /14:814 /15:1457 /16:12114 /17:6258 /18:10375
/19:20398 /20:28336 /21:27706 /22:37112 /23:35480 /24:197279
/25:67 /26:86 /27:113 /28:279 /29:105 /30:481
/31:52 /32:475
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2189 3552 bellsouth.net, inc.
18566 1871 1915 Covad Communications
7029 1608 1933 Windstream Communications Inc
10620 1575 1680 TVCABLE BOGOTA
8402 1376 1399 Corbina telecom
30036 1347 1385 Mediacom Communications Corp
11492 1115 1153 Cable One
1785 1055 1833 AppliedTheory Corporation
7011 1048 1167 Citizens Utilities
22773 947 1458 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:389 2:470 4:19 5:1 6:3 8:357
12:1955 13:1 14:530 15:11 16:3 17:7
20:9 23:54 24:1696 27:965 31:582 32:136
33:4 34:2 36:4 38:757 40:108 41:2637
42:49 44:3 46:1001 47:3 49:264 50:438
52:13 55:5 56:2 57:47 58:846 59:492
60:365 61:1092 62:1096 63:1957 64:4092 65:2306
66:4055 67:1995 68:1282 69:3314 70:882 71:378
72:1880 73:1 74:2538 75:376 76:349 77:884
78:870 79:481 80:1131 81:843 82:509 83:509
84:641 85:1119 86:412 87:876 88:358 89:1613
90:267 91:4167 92:529 93:1379 94:1310 95:1032
96:440 97:280 98:919 99:37 101:210 103:343
106:70 107:61 108:58 109:1047 110:675 111:796
112:322 113:484 114:577 115:697 116:902 117:712
118:906 119:1227 120:338 121:711 122:1607 123:1025
124:1365 125:1383 128:254 129:179 130:167 131:585
132:113 133:21 134:215 135:54 136:213 137:139
138:288 139:138 140:494 141:292 142:390 143:421
144:494 145:64 146:473 147:226 148:688 149:266
150:151 151:193 152:447 153:179 154:7 155:386
156:207 157:360 158:151 159:467 160:324 161:206
162:338 163:179 164:513 165:398 166:539 167:437
168:745 169:146 170:866 171:86 172:1 173:1688
174:662 175:419 176:266 177:289 178:1055 180:1107
181:37 182:635 183:209 184:379 185:1 186:1517
187:672 188:933 189:860 190:5199 192:5944 193:5033
194:3553 195:3130 196:1241 197:186 198:3639 199:4153
200:5519 201:1647 202:8576 203:8500 204:4304 205:2383
206:2732 207:2837 208:4162 209:3547 210:2721 211:1461
212:2107 213:1789 214:786 215:90 216:4973 217:1606
218:564 219:340 220:1243 221:514 222:343 223:285
End of report