Routing Table Report 00:00 GMT Mon 20 Jun, 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: 365820
Prefixes after maximum aggregation: 164816
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 178069
Total ASes present in the Internet Routing Table: 37952
Prefixes per ASN: 9.64
Origin-only ASes present in the Internet Routing Table: 31693
Origin ASes announcing only one prefix: 15154
Transit ASes present in the Internet Routing Table: 5092
Transit-only ASes present in the Internet Routing Table: 127
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 26
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3610
Unregistered ASNs in the Routing Table: 457
Number of 32-bit ASNs allocated by the RIRs: 1467
Number of 32-bit ASNs visible in the Routing Table: 1167
Prefixes from 32-bit ASNs in the Routing Table: 2702
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 137
Number of addresses announced to Internet: 2491293775
Equivalent to 148 /8s, 126 /16s and 32 /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: 91.0
Total number of prefixes smaller than registry allocations: 152202
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87743
Total APNIC prefixes after maximum aggregation: 29034
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 84343
Unique aggregates announced from the APNIC address blocks: 36156
APNIC Region origin ASes present in the Internet Routing Table: 4468
APNIC Prefixes per ASN: 18.88
APNIC Region origin ASes announcing only one prefix: 1253
APNIC Region transit ASes present in the Internet Routing Table: 690
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: 48
Number of APNIC addresses announced to Internet: 622357953
Equivalent to 37 /8s, 24 /16s and 109 /24s
Percentage of available APNIC address space announced: 78.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
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: 144099
Total ARIN prefixes after maximum aggregation: 74073
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115729
Unique aggregates announced from the ARIN address blocks: 46174
ARIN Region origin ASes present in the Internet Routing Table: 14458
ARIN Prefixes per ASN: 8.00
ARIN Region origin ASes announcing only one prefix: 5509
ARIN Region transit ASes present in the Internet Routing Table: 1497
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 818712344
Equivalent to 48 /8s, 204 /16s and 143 /24s
Percentage of available ARIN address space announced: 65.1
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: 89093
Total RIPE prefixes after maximum aggregation: 49160
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 81763
Unique aggregates announced from the RIPE address blocks: 52348
RIPE Region origin ASes present in the Internet Routing Table: 15754
RIPE Prefixes per ASN: 5.19
RIPE Region origin ASes announcing only one prefix: 7816
RIPE Region transit ASes present in the Internet Routing Table: 2464
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 863
Number of RIPE addresses announced to Internet: 477862996
Equivalent to 28 /8s, 123 /16s and 156 /24s
Percentage of available RIPE address space announced: 77.0
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: 33551
Total LACNIC prefixes after maximum aggregation: 7564
LACNIC Deaggregation factor: 4.44
Prefixes being announced from the LACNIC address blocks: 32602
Unique aggregates announced from the LACNIC address blocks: 16881
LACNIC Region origin ASes present in the Internet Routing Table: 1466
LACNIC Prefixes per ASN: 22.24
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 260
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: 240
Number of LACNIC addresses announced to Internet: 84895240
Equivalent to 5 /8s, 15 /16s and 102 /24s
Percentage of available LACNIC address space announced: 56.2
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: 8343
Total AfriNIC prefixes after maximum aggregation: 1968
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 6420
Unique aggregates announced from the AfriNIC address blocks: 1967
AfriNIC Region origin ASes present in the Internet Routing Table: 463
AfriNIC Prefixes per ASN: 13.87
AfriNIC Region origin ASes announcing only one prefix: 144
AfriNIC Region transit ASes present in the Internet Routing Table: 104
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 24250624
Equivalent to 1 /8s, 114 /16s and 9 /24s
Percentage of available AfriNIC address space announced: 36.1
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 1899 9492 620 Korea Telecom (KIX)
17974 1861 465 43 PT TELEKOMUNIKASI INDONESIA
7545 1537 301 86 TPG Internet Pty Ltd
4755 1476 374 166 Videsh Sanchar Nigam Ltd. Aut
24560 1153 336 187 Bharti Airtel Ltd.
7552 1143 1064 7 Vietel Corporation
9583 1076 79 507 Sify Limited
9829 1045 883 59 BSNL National Internet Backbo
17488 964 182 100 Hathway IP Over Cable Interne
4808 961 2020 279 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 3628 3819 257 bellsouth.net, inc.
18566 1957 372 219 Covad Communications
1785 1799 681 122 AppliedTheory Corporation
4323 1657 1097 396 Time Warner Telecom
6478 1641 298 276 AT&T Worldnet Services
20115 1575 1530 637 Charter Communications
19262 1493 4920 308 Verizon Global Networks
7018 1370 7072 897 AT&T WorldNet Services
7029 1358 815 311 Alltel Information Services,
22773 1339 2897 85 Cox Communications, Inc.
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
286 1051 798 192 KPNQwest Backbone AS
9116 540 326 31 Goldenlines main autonomous s
34984 524 107 182 Tellcom Iletisim Hizmetleri
3292 521 2078 401 TDC Tele Danmark
6830 515 1780 321 UPC Distribution Services
20940 464 135 355 Akamai Technologies European
29049 449 33 46 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 437 593 7 Uni2 Autonomous System
3320 421 8151 368 Deutsche Telekom AG
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 1529 280 157 TVCABLE BOGOTA
8151 1427 2710 364 Uninet S.A. de C.V.
28573 1258 993 78 Types of queries are: POCs, o
7303 990 506 170 Telecom Argentina Stet-France
6503 753 354 74 AVANTEL, S.A.
14420 683 55 82 Types of queries are: POCs, o
22047 572 322 17 Types of queries are: POCs, o
3816 532 229 98 COLOMBIA TELECOMUNICACIONES S
7738 516 986 31 Telecomunicacoes da Bahia S.A
27947 513 53 47 Telconet S.A
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 795 147 36 LINKdotNET AS number
8452 789 445 11 TEDATA
15475 525 74 8 Nile Online
36992 304 415 14 Etisalat MISR
16637 295 441 87 Johnnic e-Ventures
3741 265 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 215 12 11 Starcomms Nigeria Limited
24835 211 78 10 RAYA Telecom - Egypt
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 3628 3819 257 bellsouth.net, inc.
23456 2702 662 1462 >>UNKNOWN<<
18566 1957 372 219 Covad Communications
4766 1899 9492 620 Korea Telecom (KIX)
17974 1861 465 43 PT TELEKOMUNIKASI INDONESIA
1785 1799 681 122 AppliedTheory Corporation
4323 1657 1097 396 Time Warner Telecom
6478 1641 298 276 AT&T Worldnet Services
20115 1575 1530 637 Charter Communications
7545 1537 301 86 TPG Internet Pty Ltd
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 1861 1818 PT TELEKOMUNIKASI INDONESIA
18566 1957 1738 Covad Communications
1785 1799 1677 AppliedTheory Corporation
7545 1537 1451 TPG Internet Pty Ltd
10620 1529 1372 TVCABLE BOGOTA
6478 1641 1365 AT&T Worldnet Services
4755 1476 1310 Videsh Sanchar Nigam Ltd. Aut
4766 1899 1279 Korea Telecom (KIX)
4323 1657 1261 Time Warner Telecom
22773 1339 1254 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
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
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
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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /8:23 /9:12 /10:28 /11:81 /12:231
/13:462 /14:806 /15:1422 /16:12063 /17:6104 /18:10104
/19:19906 /20:26953 /21:26460 /22:34810 /23:33833 /24:189565
/25:379 /26:355 /27:185 /28:358 /29:280 /30:698
/31:76 /32:626
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2230 3628 bellsouth.net, inc.
18566 1908 1957 Covad Communications
6478 1604 1641 AT&T Worldnet Services
10620 1419 1529 TVCABLE BOGOTA
23456 1344 2702 >>UNKNOWN<<
11492 1090 1136 Cable One
7029 1079 1358 Alltel Information Services,
7011 1058 1158 Citizens Utilities
1785 1050 1799 AppliedTheory Corporation
286 909 1051 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:287 2:62 4:20 5:1 6:3 8:336
12:1978 13:1 14:462 15:15 16:3 17:8
20:10 23:11 24:1665 27:789 31:447 32:128
33:4 34:2 37:1 38:735 40:103 41:2518
42:2 44:3 46:983 47:3 49:188 50:415
52:13 54:2 55:4 56:2 57:41 58:850
59:475 60:387 61:1185 62:1068 63:1952 64:3968
65:2275 66:3888 67:1918 68:1268 69:3153 70:768
71:381 72:1918 73:2 74:2433 75:333 76:346
77:920 78:711 79:478 80:1122 81:854 82:510
83:465 84:678 85:1094 86:571 87:775 88:339
89:1567 90:208 91:3865 92:532 93:1079 94:1333
95:855 96:448 97:249 98:893 99:36 101:73
103:81 106:10 107:14 108:82 109:1013 110:615
111:708 112:305 113:407 114:548 115:671 116:986
117:677 118:832 119:1139 120:310 121:690 122:1629
123:948 124:1267 125:1240 128:248 129:177 130:165
131:579 132:110 133:21 134:215 135:48 136:216
137:138 138:300 139:126 140:479 141:238 142:406
143:409 144:489 145:54 146:447 147:222 148:660
149:247 150:172 151:190 152:332 153:180 154:4
155:398 156:195 157:353 158:138 159:389 160:316
161:207 162:313 163:162 164:499 165:370 166:533
167:424 168:739 169:157 170:833 171:77 172:1
173:1640 174:604 175:375 176:135 177:164 178:1009
180:899 181:19 182:486 183:222 184:383 185:1
186:1243 187:721 188:880 189:902 190:4919 192:5891
193:4986 194:3548 195:3166 196:1235 197:24 198:3604
199:3955 200:5535 201:1502 202:8322 203:8403 204:4196
205:2339 206:2759 207:2821 208:3951 209:3460 210:2720
211:1436 212:2156 213:1773 214:762 215:69 216:4948
217:1650 218:550 219:369 220:1205 221:493 222:361
223:158
End of report
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