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You are viewing an outdated report. The latest version of this report was published on April 1st, 2021


    
Certificate Authority Market Share Report
June 1st, 2017

Report Description
This report, much like our original certs and CAs report, focuses on issuers of SSL enabling certificates found on web servers. Unlike our original report, however, this report has a couple of key differences to it:

  • Reports on top 100 CAs. The original report only paid attention to the major CAs at the time the report was produced. This report lists the top 100 CAs for the month. You will find here many self-signing organizations such as universities, telecommunications firms, etc.
  • Uses issuer name as identifier. Our original report only counted a certificate towards an organization if we were able to prove, by virtue of verifying the key, that the organization in question actually signed the certificate. This had a notable problem with it - we don't always have the public key of the CA. In at least one case, a CA doesn't make their public key available unless you sign a license agreement.

    This report doesn't have that problem, since it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA May 2017
Count
May 2017
%
April 2017
Count
April 2017
%
Growth
%
DigiCert2,629,02546.67496,39241.6212.12
GoDaddy.com, Inc.683,28512.13201,11716.86-28.08
COMODO CA Limited557,5829.90121,45010.18-2.81
GeoTrust Inc.426,3047.5789,2357.481.14
GlobalSign nv-sa261,9994.6555,5274.66-0.11
Let's Encrypt141,2072.5123,7371.9925.94
Symantec Corporation126,3502.2430,8882.59-13.40
Gandi95,7081.7018,1601.5211.57
thawte, Inc.73,1301.3014,2221.198.86
Starfield Technologies, Inc.47,1580.849,9890.84-0.06
Amazon39,4000.7010,5860.89-21.21
Unknown38,9950.696,4510.5427.97
Microsoft Corporation36,0510.6412,9441.09-41.04
Unizeto Technologies S.A.35,5250.639,8560.83-23.69
cPanel, Inc.34,1130.614,7560.4051.84
Internet229,8470.538,9090.75-29.08
Entrust, Inc.26,6240.476,6080.55-14.70
TERENA25,4850.456,4410.54-16.24
Google Inc23,9840.438,9690.75-43.39
StartCom Ltd.20,5960.375,5220.46-21.04
Network Solutions L.L.C.20,4920.364,4840.38-3.25
Parallels18,7610.332,4280.2063.58
Trustwave Holdings, Inc.13,8780.252,5210.2116.54
SomeOrganization13,1680.232,2360.1924.67
none10,4680.191,1080.09100.01
GeoTrust, Inc.10,0870.181,7730.1520.44
QuoVadis Limited9,1040.161,9740.17-2.36
Cybertrust Japan Co., Ltd.7,0460.131,1600.1028.59
DreamHost7,0180.121,0550.0940.83
Odin6,8640.127340.0697.97
SecureCore5,3990.106740.0669.58
WoSign CA Limited4,6640.089250.086.74
Internet Widgits Pty Ltd4,1520.071,2660.11-30.57
Comodo Limited4,0360.076820.0625.28
home.pl S.A.4,0040.077320.0615.80
Hostpoint GmbH3,6680.073670.03111.58
nazwa.pl sp. z o.o.3,6140.066800.0612.51
SSL.com3,5890.067790.07-2.47
SECOM Trust Systems CO.,LTD.3,4630.063490.03110.06
ispgateway3,3710.063710.0392.36
Corporation Service Company3,1650.066700.060.00
CloudFlare, Inc.2,7690.058000.07-26.73
Verisign2,7160.055190.0410.79
Thawte, Inc.2,6650.054330.0430.30
KDDI Web Communications Inc.2,6650.051230.01358.68
Plesk2,4500.042670.0294.26
Trust Provider B.V.2,2230.042740.0271.76
io.ua2,1120.045330.04-16.11
National Institute of Informatics2,1080.043350.0333.21
Government of Korea2,0710.044560.04-3.85
Pizza-Taxi.de GmbH / CA1,9090.031,5100.13-73.24
T-Systems International GmbH1,6960.032710.0232.49
Equifax (Geotrust)1,6320.032600.0232.88
TAIWAN-CA1,5440.034250.04-23.09
DOMENY.PL sp. z o.o1,4860.032940.027.00
AlphaSSL1,3330.022050.0237.66
WebSupport, s.r.o.1,3140.021650.0168.59
EUNETIC GmbH1,2180.022340.0210.19
SwissSign AG1,1960.022490.021.68
Rede Nacional de Ensino e Pesquisa - RNP1,1960.022370.026.83
UIC1,1690.023440.03-28.06
KEYNECTIS1,1640.022850.02-13.54
U.S. Government1,1150.023060.03-22.86
Actalis S.p.A./033585209671,0710.02650.01248.82
NetLock Kft.1,0130.022140.020.21
Volusion, Inc.9880.0200.00N/A
Hosting Ukraine LLC9170.021840.025.50
Default Company Ltd8500.021070.0168.17
AC Camerfirma S.A.8220.011780.01-2.24
Dreamcommerce S.A.8150.011700.011.49
Japan Registry Services Co., Ltd.7840.01630.01163.45
Trend Micro Inc7820.011580.014.78
Globe Hosting, Inc.6630.011120.0125.32
Verizon Enterprise Solutions6600.015360.04-73.93
CAcert Inc.6590.011600.01-12.81
TBS INTERNET6460.011560.01-12.33
FNMT-RCM6320.011350.01-0.89
Intermediate Certificate6120.01840.0154.24
Zimbra Collaboration Server5940.01730.0172.26
Root CA5840.011140.018.45
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.5830.01980.0125.94
Buypass AS-9831633275760.01990.0123.17
WEDOS Internet, a.s.5440.0100.00N/A
XX5350.011050.017.87
Comodo CA Limited5270.01630.0177.09
Test Self SSL Company5260.01970.0114.80
ACCV5220.011950.02-43.33
Thawte5130.0100.00N/A
ICP-Brasil5120.011300.01-16.62
Nijimo, Inc.4830.0100.00N/A
Webhosting4710.0100.00N/A
HydrantID (Avalanche Cloud Corporation)4640.011480.01-33.63
Apache HTTP Server4370.01750.0123.35
SWsoft, Inc.4120.0100.00N/A
Parallels, Inc.4070.01630.0136.76
KPN Corporate Market BV3890.01970.01-15.10
Universitaet Stuttgart3670.0100.00N/A
FIDUCIA & GAD IT AG3540.0100.00N/A
AffirmTrust3530.0100.00N/A
Firstserver, Inc3410.0100.00N/A

Note: Readers are cautioned that the Growth percentages are based on a CA's market share penetration rather than the absolute number of certificates we detected. Thus, it is possible for the number of certificates to increase, while the growth is actually a negative value.



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