Routing Table Report 08:00 +10GMT Mon 02 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350970
Prefixes after maximum aggregation: 159143
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175763
Total ASes present in the Internet Routing Table: 36235
Prefixes per ASN: 9.69
Origin-only ASes present in the Internet Routing Table: 31328
Origin ASes announcing only one prefix: 15061
Transit ASes present in the Internet Routing Table: 4907
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 (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1949
Unregistered ASNs in the Routing Table: 384
Number of 32-bit ASNs allocated by the RIRs: 1321
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2292
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 144
Number of addresses announced to Internet: 2438140160
Equivalent to 145 /8s, 83 /16s and 17 /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: 144405
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84755
Total APNIC prefixes after maximum aggregation: 28580
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82022
Unique aggregates announced from the APNIC address blocks: 36855
APNIC Region origin ASes present in the Internet Routing Table: 4375
APNIC Prefixes per ASN: 18.75
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 667
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: 610817792
Equivalent to 36 /8s, 104 /16s and 87 /24s
Percentage of available APNIC address space announced: 77.5
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: 138825
Total ARIN prefixes after maximum aggregation: 70768
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111537
Unique aggregates announced from the ARIN address blocks: 45265
ARIN Region origin ASes present in the Internet Routing Table: 14256
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5452
ARIN Region transit ASes present in the Internet Routing Table: 1413
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: 799770880
Equivalent to 47 /8s, 171 /16s and 137 /24s
Percentage of available ARIN address space announced: 63.6
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: 84473
Total RIPE prefixes after maximum aggregation: 47949
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77628
Unique aggregates announced from the RIPE address blocks: 51163
RIPE Region origin ASes present in the Internet Routing Table: 15559
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7803
RIPE Region transit ASes present in the Internet Routing Table: 2421
Average RIPE Region AS path length visible: 3.5
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: 467673600
Equivalent to 27 /8s, 224 /16s and 34 /24s
Percentage of available RIPE address space announced: 75.3
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: 32186
Total LACNIC prefixes after maximum aggregation: 7378
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31339
Unique aggregates announced from the LACNIC address blocks: 16546
LACNIC Region origin ASes present in the Internet Routing Table: 1431
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 248
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: 82909952
Equivalent to 4 /8s, 241 /16s and 27 /24s
Percentage of available LACNIC address space announced: 54.9
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: 7751
Total AfriNIC prefixes after maximum aggregation: 1847
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6100
Unique aggregates announced from the AfriNIC address blocks: 1908
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.74
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 23364864
Equivalent to 1 /8s, 100 /16s and 133 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1874 9482 602 Korea Telecom (KIX)
17974 1477 470 33 PT Telekomunikasi Indonesia
7545 1469 301 81 TPG Internet Pty Ltd
4755 1458 634 166 TATA Communications formerly
7552 1211 1064 7 Vietel Corporation
24560 1156 336 184 Bharti Airtel Ltd., Telemedia
9583 1057 78 493 Sify Limited
9829 1000 871 53 National Internet Backbone
4808 948 2020 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 3646 3822 256 BellSouth.net Inc.
4323 2607 1102 398 tw telecom holdings, inc.
1785 1788 681 127 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1658 311 46 AT&T Services, Inc.
20115 1536 1552 639 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1364 6943 901 AT&T Services, Inc.
22773 1299 2865 84 Cox Communications Inc.
2386 1269 536 911 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 517 1780 320 UPC Broadband
34984 509 106 182 BILISIM TELEKOM
3292 457 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 446 131 341 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
12479 408 577 6 France Telecom Espana SA
8551 407 356 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 1448 268 160 Types of queries are: POCs, o
28573 1271 988 87 Types of queries are: POCs, o
8151 1230 2671 360 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 852 354 74 Axtel, S.A.B. de C.V.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 564 310 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 486 99 81 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 885 445 11 TEDATA
24863 776 147 37 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 299 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 221 12 9 Starcomms Nigeria Limited
24835 213 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 3646 3822 256 BellSouth.net Inc.
4323 2607 1102 398 tw telecom holdings, inc.
23456 2292 659 1262 32-bit ASN transition
4766 1874 9482 602 Korea Telecom (KIX)
1785 1788 681 127 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1658 311 46 AT&T Services, Inc.
20115 1536 1552 639 Charter Communications
19262 1495 4949 298 Verizon Online LLC
17974 1477 470 33 PT Telekomunikasi Indonesia
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 2607 2209 tw telecom holdings, inc.
1785 1788 1661 PaeTec Communications, Inc.
6478 1658 1612 AT&T Services, Inc.
18566 1737 1506 Covad Communications Co.
17974 1477 1444 PT Telekomunikasi Indonesia
7545 1469 1388 TPG Internet Pty Ltd
4755 1458 1292 TATA Communications formerly
10620 1448 1288 Types of queries are: POCs, o
4766 1874 1272 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
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
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.
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 DataBank Holdings, Ltd.
62.61.220.0/24 24974 Tachyon Europe BV
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 /12:221
/13:459 /14:789 /15:1386 /16:11642 /17:5749 /18:9577
/19:19297 /20:25617 /21:25591 /22:33619 /23:32367 /24:184046
/25:11 /26:16 /27:24 /28:158 /29:96 /30:53
/31:0 /32:114
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 BellSouth.net Inc.
18566 1711 1737 Covad Communications Co.
6478 1612 1658 AT&T Services, Inc.
10620 1338 1448 Types of queries are: POCs, o
4323 1311 2607 tw telecom holdings, inc.
11492 1208 1259 CABLE ONE, INC.
23456 1150 2292 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1054 1788 PaeTec Communications, Inc.
22773 843 1299 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:261 2:52 4:14 5:1 6:3 8:351
12:1987 13:1 14:433 15:15 16:3 17:8
20:10 23:5 24:1612 27:725 31:233 32:55
33:3 34:2 37:1 38:762 40:101 41:2451
42:5 44:3 46:883 47:4 49:171 50:375
52:13 55:5 56:2 57:29 58:792 59:476
60:354 61:1090 62:984 63:1924 64:3924 65:2315
66:4345 67:1867 68:1082 69:2966 70:697 71:346
72:1890 73:1 74:2356 75:299 76:337 77:837
78:688 79:463 80:1095 81:817 82:498 83:451
84:649 85:1078 86:556 87:761 88:323 89:1593
90:183 91:3715 92:513 93:1058 94:1267 95:795
96:473 97:254 98:826 99:35 101:60 103:5
106:1 107:6 108:83 109:942 110:552 111:694
112:313 113:395 114:531 115:677 116:930 117:680
118:776 119:1129 120:304 121:652 122:1617 123:1059
124:1249 125:1203 128:209 129:158 130:166 131:562
132:103 133:19 134:209 135:49 136:211 137:139
138:302 139:104 140:459 141:174 142:384 143:396
144:484 145:52 146:434 147:206 148:582 149:242
150:163 151:187 152:307 153:179 154:2 155:395
156:187 157:323 158:132 159:375 160:313 161:205
162:276 163:154 164:494 165:349 166:512 167:428
168:721 169:152 170:784 171:76 172:1 173:1533
174:538 175:347 177:82 178:853 180:812 181:16
182:419 183:205 184:258 185:1 186:1149 187:811
188:988 189:971 190:4830 192:5741 193:4845 194:3467
195:2975 196:1211 197:16 198:3510 199:3887 200:5495
201:1503 202:8111 203:8296 204:4064 205:2297 206:2650
207:2960 208:3945 209:3439 210:2653 211:1381 212:1985
213:1703 214:714 215:67 216:4863 217:1651 218:551
219:372 220:1197 221:468 222:306 223:141
End of report
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