Certification Services in United States (US)

This analysis relates to those sites found in the survey where the common name in the certificate matched the hostname, and the certificate's digital signature was not detected as being self-signed.

Market Share of Certification Authorities in United States (US)

The following graph shows the share of sites currently certified by each certificate authority. Brands belonging to the major companies have been grouped together.

The worldwide version of this data is available on a separate page. This data is also available divided into:

Certificate market share

Certificate market share

The following table and graph show the change over time of the number of sites certified by the main CA companies. The different brands of the major players are grouped together (so RSA Data Security & Thawte are included in Verisign; Equifax and UserTrust are included in GeoTrust).

Certificate authority groups over time

Certificate authority group share

Authority Current
%		 2004 2005 2006
Jun Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
VeriSign 46.41 119335 116672 117721 116202 116052 115499 115920 118280 118591 118471 118062 117623 117326 116277
GeoTrust 31.73 53952 63647 65235 66594 67144 68629 69854 72528 73639 74597 76104 77257 78559 79506
Comodo 13.02 21413 27854 28339 28896 29082 29502 30149 31207 31923 32232 32585 33110 33675 32627
Other 4.76 1648 4560 5199 5570 5967 6451 7039 7643 8326 8792 9589 10338 11348 11926
Entrust.net 2.20 3920 4769 4912 4937 5015 5035 5189 5384 5442 5185 5297 5357 5458 5507
Go Daddy 1.88 720 3609 3621 3666 3605 3729 3878 4095 4241 4344 4511 4677 4792 4715

The following graph and table show the complete results by certificate authority. These results are broken out into the individual companies and brands, as given by the organisation field on the certificate.

Certificate authority brands over time

Certificate authority brand share

Authority Current
%		 2004 2005 2006
Jun Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Equifax Secure Inc. 26.19 6263 42845 45325 47866 49141 51507 53461 56356 58305 60075 62378 63919 65471 65625
Thawte Consulting cc 14.96 42959 39200 39215 38484 38174 37983 38069 38638 38585 38533 38108 37906 37913 37477
VeriSign Trust Network 13.40 27500 31393 32042 31879 32247 32224 32600 33496 33553 33615 33753 33770 33708 33564
RSA Data Security, Inc. 11.95 48699 43200 42687 40756 39504 38080 37009 37080 36029 35122 33685 32459 31143 29938
Comodo Limited 8.63 21413 26822 27186 27608 27751 28084 28083 28190 27487 26508 25272 24171 22874 21629
VeriSign, Inc. 4.79 177 197 916 2190 3134 4187 5159 5870 7191 7977 9257 10247 11285 12010
Equifax 4.30 42393 12318 12020 11728 11636 11524 11491 11653 11440 11271 11221 11072 10872 10781
AddTrust AB 3.52 0 0 0 0 0 0 572 1424 2758 3983 5469 6975 8699 8829
Entrust.net 2.20 3920 4769 4912 4937 5015 5035 5189 5384 5442 5185 5297 5357 5458 5507
Starfield Technologies, Inc. 1.88 720 3609 3621 3666 3605 3729 3878 4095 4241 4344 4511 4677 4792 4715
Network Solutions L.L.C. 1.46 0 24 110 288 459 762 1045 1305 1565 1851 2290 2729 3266 3664
Thawte Consulting (Pty) Ltd. 1.31 0 2682 2861 2893 2993 3025 3083 3196 3233 3224 3259 3241 3277 3288
XRamp Security Services Inc 1.20 501 1683 1823 1959 2019 2116 2164 2294 2391 2505 2645 2765 2935 3001
The USERTRUST Network 1.15 3715 7740 7207 6416 5875 5157 4496 4125 3528 2896 2196 1987 1967 2882
DigiCert Inc. 0.75 0 1007 1116 1221 1242 1308 1358 1440 1504 1552 1628 1723 1832 1879
U.S. Government 0.74 0 1235 1315 1356 1466 1506 1572 1626 1662 1655 1726 1747 1805 1847
StartCom Ltd. 0.31 0 0 140 163 175 232 362 446 484 514 562 603 761 781
IPS Certification Authority s.l. 0.25 495 503 503 500 513 528 545 568 580 582 586 602 616 631
Microsoft Secure Server Authority 0.19 0 0 0 0 0 0 0 0 376 404 440 472 483 482
Trusted Secure Certificate Authority 0.12 0 25 37 67 89 110 136 152 173 188 215 240 269 289
Akamai 0.11 55 159 158 166 169 181 198 223 230 235 249 260 268 281
ChainedSSL 0.07 0 123 176 197 213 221 228 234 239 239 235 217 193 164
Sun Microsystems Inc 0.05 1 1 1 0 0 0 0 0 42 45 74 125 133 133
Digital Signature Trust Co. 0.05 129 125 128 136 132 78 102 105 108 110 111 112 114 116
Accenture 0.04 68 63 72 64 73 75 77 85 86 91 91 92 95 94
GlobalSign Inc 0.04 0 19 33 42 55 71 80 84 91 99 111 112 114 112
CFC 0.03 22 74 75 75 74 73 77 79 82 82 84 83 86 86
Dell Inc. 0.03 0 28 34 42 49 62 72 74 76 77 77 79 74 74
MasterCard International 0.02 13 36 36 38 40 40 40 43 42 45 46 47 48 47
Secure Business Services, Inc. 0.02 0 0 1 5 10 16 20 20 30 32 34 41 45 46
Digital Signature Trust 0.02 0 15 17 21 25 31 32 33 36 38 43 42 48 50
Network Associates 0.02 11 34 35 36 36 37 26 30 34 35 36 36 38 40
SAIC 0.02 0 0 2 9 12 15 18 20 21 23 31 31 35 39
S1 Corporation 0.02 0 17 20 25 26 30 32 35 40 41 46 46 47 47
FreeSSL 0.02 1581 620 506 386 278 219 177 159 126 100 58 46 40 39
Mortgage and Settlement Service Trust CA 0.02 1 29 28 30 33 34 34 35 37 34 35 35 38 39
Disney Enterprises 0.02 7 41 42 48 49 47 47 49 46 48 51 52 53 53
BAH 0.01 4 4 8 9 11 10 10 12 13 11 13 13 15 15
Aetna 0.01 8 20 21 20 21 23 25 26 26 25 25 22 20 20
RSA Security Inc. 0.01 8 12 12 15 17 16 18 18 18 19 19 19 20 20
Earthlink Inc 0.01 0 0 0 0 0 0 0 0 5 10 11 18 22 25
Anthem Inc 0.01 3 16 17 19 19 18 19 19 26 25 28 29 33 36
Digi-Sign Limited 0.01 0 0 0 0 0 0 0 1 4 10 11 16 20 24
GlobalSign nv-sa 0.01 11 12 13 14 14 16 14 13 13 12 13 14 15 18
Cisco Systems 0.01 3 10 12 8 9 9 9 14 15 15 14 17 17 18
TC TrustCenter for Security in Data Networks GmbH 0.01 9 10 12 11 13 11 13 13 15 15 15 15 15 14
Wachovia Corporation 0.01 22 31 32 32 36 35 33 35 34 33 32 30 32 33
Root CA 0.00 0 3 3 3 4 8 8 10 10 10 9 10 10 10
Heartlab Inc 0.00 0 0 0 0 0 0 0 0 1 1 0 0 0 0
I.T. Telecom 0.00 0 1 1 1 2 2 2 2 2 2 0 0 2 2
Nestle 0.00 0 0 0 0 0 0 1 1 1 1 3 3 3 4
I.T. Telecom S.p.A. 0.00 1 0 0 0 0 0 0 0 0 0 0 0 0 0
Microsoft Corporation 0.00 4 4 4 5 4 4 4 4 4 4 4 4 4 4
Registry Services Corporation 0.00 0 3 3 3 3 2 1 2 2 2 2 2 2 2
Serasa 0.00 0 0 0 0 0 1 1 1 1 1 1 1 1 1
Positive Software Corporation 0.00 0 0 0 0 0 0 0 1 1 1 1 1 1 1
GeoTrust Inc. 0.00 0 1 1 1 1 1 1 1 1 1 1 1 1 1
GDT-EntSubCA-Public 0.00 0 0 0 0 0 0 0 0 1 1 0 0 0 0
GTE Corporation 0.00 209 144 126 107 96 79 64 52 45 36 7 1 1 1
QuoVadis Limited 0.00 0 1 1 2 2 1 3 3 3 4 3 3 3 3
Identrus 0.00 0 0 0 0 0 0 0 1 1 1 1 1 1 1
Deutsche Telekom AG 0.00 0 2 2 2 2 2 2 2 1 1 1 1 1 0
Baltimore Technologies Japan Co.,Ltd. 0.00 2 0 0 0 0 0 0 0 0 0 0 0 0 0
TSI 0.00 2 6 6 4 5 6 6 6 6 5 7 7 6 6
SCANDTRUST AB 0.00 1 0 0 0 0 0 0 0 0 0 0 0 0 0
Aetna Inc. 0.00 0 0 0 0 0 0 0 0 1 2 2 4 5 7
unknown 0.00 0 147 304 267 253 237 235 233 0 0 0 0 0 0
beTRUSTed 0.00 56 44 45 41 38 34 26 19 16 12 12 8 9 9
Etisalat 0.00 2 4 4 4 3 3 2 2 3 3 3 4 4 4

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