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
%		 2005 2006 2007 2008
Jan Jan Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
VeriSign 67.12 115436 118591 199590 200270 201408 202232 205100 208100 211145 212045 212660 213727 214423 215473 217028
Comodo 16.53 23749 31959 35658 36249 36904 37331 38399 39374 48059 48579 50368 51325 52092 52998 53464
Other 6.15 59839 80364 12486 12951 13248 13600 14153 15253 16702 17117 17521 18364 18874 19283 19890
Network Solutions 5.23 0 1565 6690 7066 7414 7743 8378 9097 10942 11352 13697 14688 15536 16336 16921
Go Daddy 2.50 2223 4241 5287 5405 5504 5654 6866 6937 7057 7132 7198 7309 7819 7894 8082
Entrust.net 2.46 4382 5442 6122 6210 6290 6387 6550 6791 7013 7127 7315 7484 7751 7852 7956

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
%		 2005 2006 2007 2008
Jan Jan Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan
Equifax Secure Inc. 17.94 26069 58305 61522 60387 59661 58662 58402 57248 56839 56424 56442 56698 56840 57352 58008
UTN-USERFirst-Hardware 12.77 0 0 15355 17381 19432 21394 23819 25594 31518 32657 34819 36715 38307 40000 41291
Equifax 12.38 22171 11440 21600 23637 25555 27541 30153 32891 34897 36116 36919 37804 38611 39330 40040
Thawte Consulting cc 11.84 40526 38585 37537 37199 37293 37304 37559 37894 38321 38759 38576 38482 38371 38177 38281
VeriSign Trust Network 10.54 28927 33553 33572 33696 33764 33747 33818 34288 34794 34594 34538 34441 34193 34126 34073
VeriSign, Inc. 10.44 182 7191 15072 15809 16596 17707 19407 21634 23464 25376 27039 29151 30803 32396 33762
Network Solutions L.L.C. 5.23 0 1565 6690 7066 7414 7743 8378 9097 10942 11352 13697 14688 15536 16336 16921
RSA Data Security, Inc. 3.00 44370 36029 26256 25654 24795 23624 22146 20583 19379 17408 15747 13825 12339 10903 9701
Entrust.net 2.45 4382 5442 6122 6210 6289 6382 6541 6778 6996 7109 7293 7456 7720 7817 7918
DigiCert Inc 1.96 422 1504 2617 2738 2861 2997 3166 3460 4684 4900 5024 5525 5777 5990 6348
Comodo Limited 1.77 23323 27487 12536 11790 11115 10346 9685 9039 10385 9669 8995 7904 7083 6353 5719
GoDaddy.com, Inc. 1.52 0 0 0 0 158 507 1154 1645 2070 2485 2840 3321 4116 4483 4901
SecureTrust Corporation 1.06 0 0 0 1 5 32 369 818 1143 1498 1821 2314 2666 3069 3414
AddTrust AB 1.01 0 2758 7236 6523 5763 4929 4155 3894 4632 4568 4525 4364 4082 3667 3250
Starfield Technologies, Inc. 0.98 2223 4241 5287 5405 5346 5147 5712 5292 4987 4647 4358 3988 3703 3411 3181
Thawte Consulting (Pty) Ltd. 0.83 1431 3233 3175 3175 3131 3081 3065 3068 2958 2898 2876 2834 2771 2711 2696
XRamp Security Services Inc 0.72 1186 2391 4031 4197 4313 4458 4349 4094 3853 3624 3413 3095 2848 2578 2336
U.S. Government 0.64 0 1662 1893 1942 1970 1998 2013 2074 2126 2113 2140 2158 2118 2056 2060
IPS Certification Authority s.l. 0.56 479 580 893 1020 1061 1113 1155 1433 1461 1497 1545 1629 1693 1759 1817
Comodo CA Limited 0.54 0 0 0 1 13 62 95 146 395 536 792 1057 1302 1548 1735
Trusted Secure Certificate Authority 0.31 3 173 380 391 411 426 464 498 773 781 857 902 927 965 993
StartCom Ltd. 0.25 0 484 912 913 903 878 906 913 870 847 835 795 800 802 801
Akamai Technologies Inc 0.22 0 0 167 204 249 281 327 391 499 571 595 622 652 675 697
Microsoft Secure Server Authority 0.10 0 376 325 301 247 190 212 260 256 269 276 298 320 315 320
The USERTRUST Network 0.08 7812 3528 761 610 507 447 418 356 356 329 368 322 313 287 269
Digi-Sign Limited 0.06 0 4 71 76 82 83 83 85 183 194 194 186 187 185 186
GlobalSign Inc 0.06 0 91 156 163 177 188 209 213 218 216 205 197 202 203 199
Sun Microsystems Inc 0.06 1 42 153 153 151 149 153 171 174 174 178 179 181 179 183
Secure Business Services, Inc. 0.05 0 30 68 71 67 70 77 88 97 95 94 92 92 149 150
Digital Signature Trust Co. 0.05 128 108 110 107 105 101 105 157 161 156 150 150 156 156 157
thawte, Inc. 0.04 0 0 0 10 14 27 38 54 62 75 86 103 109 115 119
Accenture 0.04 69 86 106 109 120 119 117 128 124 122 119 123 123 122 125
CFC 0.04 66 82 85 86 88 89 92 105 131 130 133 133 126 127 126
Digital Signature Trust 0.04 4 36 64 54 55 53 53 64 66 61 86 115 119 120 122
UTN - DATACorp SGC 0.04 0 0 6 9 15 17 18 25 58 61 68 81 91 110 118
Cybertrust Inc 0.03 0 0 0 0 0 1 1 6 16 28 49 60 74 81 95
Earthlink Inc 0.03 0 5 71 72 69 69 73 83 87 84 83 83 81 83 81
Dell Inc. 0.03 7 76 82 80 81 85 84 87 92 89 85 79 83 82 81
Louisiana State University Issuing CA 1 0.02 0 0 9 13 14 20 22 33 36 34 43 47 50 51 51
GlobalSign nv-sa 0.02 11 13 23 23 29 27 26 34 46 53 67 64 65 71 77
MasterCard Worldwide 0.02 0 0 0 0 0 1 2 5 11 10 18 34 42 47 49
RSA Security Inc. 0.02 8 18 19 22 21 22 22 26 30 36 44 45 50 51 55
Network Associates 0.02 21 34 53 52 54 57 58 67 70 70 71 72 71 65 65
SAIC 0.02 0 21 51 48 48 53 55 58 64 63 65 69 76 77 80
Mortgage and Settlement Service Trust CA 0.02 17 37 46 47 52 56 62 59 59 55 55 55 55 57 57
Anthem Inc 0.02 11 26 73 75 75 75 72 73 69 70 75 73 75 70 76
Wachovia Corporation 0.02 25 34 32 32 32 35 37 40 44 46 45 47 49 50 51
BAH 0.01 4 13 14 15 16 17 17 18 19 19 19 20 19 19 19
GlobalSign 0.01 0 0 0 0 0 0 0 0 0 0 1 3 13 23 35
MasterCard International 0.01 31 42 56 56 53 56 57 59 57 57 51 35 29 26 22
S1 Corporation 0.01 0 40 49 49 47 45 47 45 44 44 43 43 43 43 44
TBS INTERNET 0.01 0 0 0 1 1 1 1 1 14 14 16 16 15 15 17
Cisco Systems 0.01 5 15 27 27 29 30 32 34 31 33 35 36 37 38 38
Entrust, Inc. 0.01 0 0 0 0 1 5 9 13 17 18 22 28 31 35 38
Intel Corporation 0.01 0 0 10 14 14 15 16 20 22 22 22 26 24 27 27
GeoTrust Inc 0.01 0 0 0 4 8 15 21 23 25 26 32 36 42 45 47
Aetna Inc. 0.01 0 1 33 34 33 34 35 39 39 40 40 41 41 44 43
Root CA 0.00 0 10 10 13 13 13 14 15 14 15 15 16 16 13 14
Akamai 0.00 129 230 230 203 175 156 125 98 16 0 0 0 0 0 0
GTE Corporation 0.00 177 45 1 1 1 1 1 2 2 2 2 2 2 2 2
SunGard Availability Services 0.00 0 0 7 7 12 12 12 12 13 13 15 14 14 15 15
QuoVadis Limited 0.00 0 3 4 4 4 4 4 4 5 6 5 5 5 6 6
USERTRUST - Server Authentication 0.00 0 0 2 2 2 3 3 3 3 3 3 3 4 4 4
Heartlab Inc 0.00 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
Identrus 0.00 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH 0.00 0 0 0 1 2 2 2 2 1 1 1 1 1 1 1
shcica 0.00 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2
Aetna 0.00 16 26 0 0 0 0 0 0 0 0 0 0 0 0 0
I.T. Telecom 0.00 0 2 1 1 1 1 1 1 1 1 2 2 2 2 2
Nestle 0.00 0 1 5 5 5 5 5 5 5 5 6 8 12 14 16
American Express Channel Server CA 3 0.00 0 0 0 0 0 0 0 0 0 0 2 2 1 2 1
Unicert Brasil Certificadora 0.00 0 0 1 1 1 1 1 1 2 2 1 1 1 1 1
CH2M HILL Internet CA 0.00 0 0 0 2 3 3 3 4 5 7 7 6 6 6 6
Cybertrust 0.00 0 0 1 1 1 1 1 1 2 3 3 3 3 4 4
Sempra Energy Secure Server CA1 0.00 0 0 0 0 0 0 0 0 0 0 0 4 5 5 5
FreeSSL 0.00 1136 126 17 12 10 8 5 5 5 5 5 5 6 6 6
Jabber Software Foundation 0.00 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Kerr-McGee 0.00 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0
Retail Ventures 0.00 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2
Deutsche Telekom AG 0.00 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
Microsoft Corporation 0.00 4 4 4 4 5 5 6 7 7 7 6 6 8 8 8
Google Inc 0.00 0 0 0 0 0 0 0 0 0 2 3 3 3 8 8
LifeMasters Supported SelfCare Inc. 0.00 0 0 1 1 1 2 2 2 2 2 2 2 2 2 2
IPS Seguridad CA 0.00 0 0 4 4 4 5 5 5 5 5 6 6 6 6 6
ChainedSSL 0.00 0 239 65 66 62 56 54 42 29 20 16 11 11 11 11
Positive Software Corporation 0.00 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0
MindGenies 0.00 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1
Serasa 0.00 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1
Registry Services Corporation 0.00 1 2 5 5 5 3 2 3 3 3 7 7 5 5 4
TSI 0.00 3 6 6 5 5 4 0 0 0 0 0 0 0 0 0
GeoTrust Inc. 0.00 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0
Bechtel Corporation 0.00 0 0 0 0 0 0 0 0 1 2 2 3 6 9 13
CAcert Inc. 0.00 0 0 2 2 2 3 3 3 3 3 3 3 5 4 7
Certicamara S.A. Entidad de Certificacion 0.00 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0
Disney Enterprises 0.00 38 46 31 31 27 23 13 13 7 2 0 0 0 0 0
TC TrustCenter for Security in Data Networks GmbH 0.00 9 15 12 10 11 12 13 13 15 15 16 15 14 14 15
unknown 0.00 134 0 0 0 0 0 0 0 0 0 0 0 0 0 0
beTRUSTed 0.00 62 16 7 7 7 7 3 2 1 0 0 0 0 0 0
T-Systems Enterprise Services GmbH 0.00 0 0 1 1 1 2 2 2 1 1 2 2 2 2 2
Etisalat 0.00 4 3 4 4 1 0 0 1 1 1 1 1 2 1 2
GDT-EntSubCA-Public 0.00 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
UIS-IsuB1-CA 0.00 0 0 0 0 0 0 0 0 0 0 0 2 4 4 6
Registry Pro 0.00 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1
AddTrust Sweden AB 0.00 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1

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