Routing Table Report 08:00 +10GMT Thu 05 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 351468
Prefixes after maximum aggregation: 159264
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175955
Total ASes present in the Internet Routing Table: 36282
Prefixes per ASN: 9.69
Origin-only ASes present in the Internet Routing Table: 31356
Origin ASes announcing only one prefix: 15084
Transit ASes present in the Internet Routing Table: 4926
Transit-only ASes present in the Internet Routing Table: 117
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 1980
Unregistered ASNs in the Routing Table: 396
Number of 32-bit ASNs allocated by the RIRs: 1325
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2368
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 211
Number of addresses announced to Internet: 2437708800
Equivalent to 145 /8s, 76 /16s and 124 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 144571
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84950
Total APNIC prefixes after maximum aggregation: 28590
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82203
Unique aggregates announced from the APNIC address blocks: 36839
APNIC Region origin ASes present in the Internet Routing Table: 4380
APNIC Prefixes per ASN: 18.77
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 670
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 612109312
Equivalent to 36 /8s, 124 /16s and 12 /24s
Percentage of available APNIC address space announced: 77.6
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: 139046
Total ARIN prefixes after maximum aggregation: 70787
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111723
Unique aggregates announced from the ARIN address blocks: 45275
ARIN Region origin ASes present in the Internet Routing Table: 14282
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5472
ARIN Region transit ASes present in the Internet Routing Table: 1420
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 799021568
Equivalent to 47 /8s, 160 /16s and 26 /24s
Percentage of available ARIN address space announced: 63.5
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: 84418
Total RIPE prefixes after maximum aggregation: 47993
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77778
Unique aggregates announced from the RIPE address blocks: 51239
RIPE Region origin ASes present in the Internet Routing Table: 15568
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7807
RIPE Region transit ASes present in the Internet Routing Table: 2426
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 468022528
Equivalent to 27 /8s, 229 /16s and 117 /24s
Percentage of available RIPE address space announced: 75.4
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: 32229
Total LACNIC prefixes after maximum aggregation: 7394
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31430
Unique aggregates announced from the LACNIC address blocks: 16617
LACNIC Region origin ASes present in the Internet Routing Table: 1436
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 252
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 83036928
Equivalent to 4 /8s, 243 /16s and 11 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7761
Total AfriNIC prefixes after maximum aggregation: 1848
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6113
Unique aggregates announced from the AfriNIC address blocks: 1886
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 95
Average AfriNIC Region AS path length visible: 3.5
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 23043584
Equivalent to 1 /8s, 95 /16s and 158 /24s
Percentage of available AfriNIC address space announced: 34.3
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
4766 1875 9482 602 Korea Telecom (KIX)
7545 1520 301 82 TPG Internet Pty Ltd
17974 1493 470 34 PT Telekomunikasi Indonesia
4755 1460 634 166 TATA Communications formerly
7552 1204 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
9583 1058 78 493 Sify Limited
9829 1038 874 51 National Internet Backbone
4808 950 2017 277 CNCGROUP IP network China169
17488 943 165 100 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3647 3822 256 BellSouth.net Inc.
4323 2601 1103 399 tw telecom holdings, inc.
1785 1788 681 127 PaeTec Communications, Inc.
18566 1754 341 242 Covad Communications Co.
6478 1665 312 50 AT&T Services, Inc.
20115 1531 1536 636 Charter Communications
19262 1496 4949 298 Verizon Online LLC
7018 1370 6960 898 AT&T Services, Inc.
22773 1301 2865 85 Cox Communications Inc.
2386 1267 536 909 AT&T Data Communications Serv
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9116 540 326 30 Goldenlines main autonomous s
6830 518 1780 321 UPC Broadband
34984 508 106 184 BILISIM TELEKOM
3292 457 1997 391 TDC Data Networks
29049 449 32 47 AzerSat LLC.
20940 447 131 342 Akamai Technologies European
8866 445 134 26 Bulgarian Telecommunication C
3320 422 7609 367 Deutsche Telekom AG
12479 411 577 6 France Telecom Espana SA
8551 406 356 39 Bezeq International
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1458 270 155 Types of queries are: POCs, o
28573 1271 990 88 Types of queries are: POCs, o
8151 1234 2679 357 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 790 354 74 Axtel, S.A.B. de C.V.
14420 667 54 92 CORPORACION NACIONAL DE TELEC
22047 565 310 15 Types of queries are: POCs, o
3816 518 226 98 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 491 100 82 Alestra, S. de R.L. de C.V.
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 879 445 11 TEDATA
24863 779 147 35 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 218 12 10 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3647 3822 256 BellSouth.net Inc.
4323 2601 1103 399 tw telecom holdings, inc.
23456 2368 666 1279 32-bit ASN transition
4766 1875 9482 602 Korea Telecom (KIX)
1785 1788 681 127 PaeTec Communications, Inc.
18566 1754 341 242 Covad Communications Co.
6478 1665 312 50 AT&T Services, Inc.
20115 1531 1536 636 Charter Communications
7545 1520 301 82 TPG Internet Pty Ltd
19262 1496 4949 298 Verizon Online LLC
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2601 2202 tw telecom holdings, inc.
1785 1788 1661 PaeTec Communications, Inc.
6478 1665 1615 AT&T Services, Inc.
18566 1754 1512 Covad Communications Co.
17974 1493 1459 PT Telekomunikasi Indonesia
7545 1520 1438 TPG Internet Pty Ltd
10620 1458 1303 Types of queries are: POCs, o
4755 1460 1294 TATA Communications formerly
4766 1875 1273 Korea Telecom (KIX)
11492 1259 1244 CABLE ONE, INC.
Complete listing at http://thyme.rand.apnic.net/london/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 7018 AT&T Services, Inc.
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T Services, Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.0.0.0/8 65333 Internet Assigned Numbers Aut
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 65535 Internet Assigned Numbers Aut
198.18.0.0/15 65333 Internet Assigned Numbers Aut
Complete listing at http://thyme.rand.apnic.net/london/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
31.210.64.0/24 42926 RIPE Network Coordination Cen
31.210.65.0/24 42926 RIPE Network Coordination Cen
31.210.66.0/24 42926 RIPE Network Coordination Cen
31.210.67.0/24 42926 RIPE Network Coordination Cen
Complete listing at http://thyme.rand.apnic.net/london/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 /8:21 /9:12 /10:28 /11:77 /12:222
/13:457 /14:788 /15:1387 /16:11641 /17:5760 /18:9618
/19:19318 /20:25632 /21:25635 /22:33736 /23:32414 /24:184238
/25:11 /26:17 /27:25 /28:160 /29:98 /30:53
/31:0 /32:120
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2247 3647 BellSouth.net Inc.
18566 1728 1754 Covad Communications Co.
6478 1619 1665 AT&T Services, Inc.
10620 1348 1458 Types of queries are: POCs, o
4323 1305 2601 tw telecom holdings, inc.
11492 1208 1259 CABLE ONE, INC.
23456 1178 2368 32-bit ASN transition
7011 1062 1162 Frontier Communications of Am
1785 1054 1788 PaeTec Communications, Inc.
22773 845 1301 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:264 2:57 4:14 5:1 6:3 8:353
12:1987 13:1 14:439 15:15 16:3 17:8
20:10 23:6 24:1617 27:727 31:302 32:55
33:3 34:2 37:1 38:762 40:101 41:2478
42:4 44:3 46:903 47:4 49:171 50:388
52:13 55:4 56:2 57:29 58:793 59:476
60:372 61:1088 62:992 63:1924 64:3917 65:2312
66:4351 67:1869 68:1078 69:2969 70:699 71:346
72:1892 73:1 74:2359 75:301 76:338 77:837
78:688 79:463 80:1094 81:817 82:499 83:448
84:647 85:1076 86:564 87:758 88:324 89:1590
90:183 91:3735 92:510 93:1058 94:1269 95:792
96:477 97:255 98:838 99:35 101:65 103:9
106:1 107:8 108:84 109:951 110:570 111:699
112:312 113:399 114:503 115:677 116:929 117:675
118:781 119:1138 120:304 121:650 122:1615 123:1005
124:1248 125:1205 128:207 129:158 130:159 131:562
132:101 133:19 134:209 135:49 136:211 137:139
138:302 139:111 140:457 141:239 142:384 143:396
144:482 145:52 146:436 147:210 148:582 149:242
150:163 151:187 152:310 153:179 154:2 155:396
156:187 157:324 158:132 159:377 160:313 161:199
162:278 163:154 164:493 165:345 166:511 167:427
168:711 169:152 170:784 171:76 172:1 173:1543
174:539 175:357 177:110 178:862 180:808 181:19
182:424 183:206 184:261 185:1 186:1152 187:798
188:847 189:944 190:4840 192:5724 193:4844 194:3471
195:2967 196:1209 197:16 198:3508 199:3876 200:5499
201:1507 202:8113 203:8300 204:4068 205:2303 206:2649
207:2971 208:3935 209:3454 210:2652 211:1379 212:1990
213:1722 214:732 215:66 216:4875 217:1652 218:554
219:372 220:1199 221:468 222:310 223:142
End of report
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