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Certificate Authority Market Share Report
September 1st, 2019

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 August 2019
Count
August 2019
%
July 2019
Count
July 2019
%
Growth
%
COMODO CA Limited1,466,91220.531,414,60221.67-5.26
Let's Encrypt1,400,84119.611,225,60218.784.43
DigiCert1,103,70615.451,027,89215.75-1.90
GlobalSign nv-sa443,9226.21416,6716.38-2.66
Sectigo Limited386,8335.41327,9145.027.78
cPanel, Inc.318,3524.46278,6424.274.39
GoDaddy.com, Inc.300,0284.20273,1694.190.35
Unknown217,7383.05195,3132.991.86
Amazon142,6362.00126,1061.933.34
Starfield Technologies, Inc.109,9851.54102,8861.58-2.33
CloudFlare, Inc.65,1120.9157,2280.883.95
Google Trust Services64,8920.9163,1280.97-6.08
Plesk57,1080.8049,5690.765.26
SecureCore49,8100.7041,5250.649.59
SomeOrganization49,7060.7044,3070.682.50
none45,8460.6440,6410.623.07
ispgateway45,6030.6441,0910.631.40
Internet243,8350.6141,4090.63-3.28
TERENA41,9910.5939,2970.60-2.37
Unizeto Technologies S.A.41,4840.5836,4390.564.01
Gehirn Inc.36,1470.5129,4880.4512.00
GeoTrust Inc.34,2060.4832,1580.49-2.82
Trustwave Holdings, Inc.32,6650.4629,7620.460.28
Entrust, Inc.31,9600.4530,8420.47-5.32
Parallels31,5030.4428,9800.44-0.68
Gandi28,5430.4026,7140.41-2.38
Odin26,4430.3723,6610.362.11
DreamHost22,9100.3218,9400.2910.52
home.pl S.A.22,0880.3119,9960.310.92
Microsoft Corporation20,5500.2925,5860.39-26.62
Actalis S.p.A./0335852096718,2330.2615,3070.238.83
Network Solutions L.L.C.16,5550.2315,4380.24-2.02
Apache HTTP Server15,4050.2215,2240.23-7.55
Cybertrust Japan Co., Ltd.15,2960.2114,5600.22-4.02
QuoVadis Limited14,7090.2114,1000.22-4.69
Webhosting14,2140.2012,1690.196.72
SECOM Trust Systems CO.,LTD.14,0650.2012,5240.192.61
Internet Widgits Pty Ltd12,4280.1711,8090.18-3.85
nazwa.pl sp. z o.o.12,3300.1711,0680.171.78
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.11,4140.1611,0200.17-5.37
Caddy Self-Signed9,9440.142,4580.04269.62
WebSupport, s.r.o.8,8070.127,7690.123.57
TrustAsia Technologies, Inc.8,3100.127,0200.118.15
Japan Registry Services Co., Ltd.8,2410.127,7350.12-2.66
Trust Provider B.V.7,5290.116,8170.100.91
Corporation Service Company7,3390.106,8950.11-2.75
Hosting Ukraine LLC7,0640.106,4510.100.05
io.ua6,2250.096,1340.09-7.28
SH5,6430.084,7960.077.50
The Trustico Group Ltd5,5860.085,2260.08-2.34
StartCom Ltd.5,5790.085,4790.08-6.97
WEDOS Internet, a.s.5,3270.074,5840.076.17
World4You Internet Services GmbH4,8780.074,0890.068.99
thawte, Inc.4,8280.074,6560.07-5.26
Acme Co4,7460.074,0110.068.11
Default Company Ltd4,5390.064,0450.062.52
GeoTrust, Inc.3,8780.053,7750.06-6.14
KAGOYA-JAPAN3,8400.053,3960.053.31
Test Self SSL Company3,6230.053,2180.052.86
Pizza-Taxi.de GmbH / CA3,5600.053,5080.05-7.28
HydrantID (Avalanche Cloud Corporation)3,5540.053,5110.05-7.52
Comodo Limited3,5460.053,1460.052.98
XX3,3480.053,1570.05-3.11
National Institute of Informatics3,0380.042,9000.04-4.29
Dreamcommerce S.A.3,0380.042,8110.04-1.26
SwissSign AG3,0150.042,5640.047.44
DOMENY.PL sp. z o.o2,9820.042,7210.040.13
www.sprinthost.ru2,9710.042,5750.045.42
TAIWAN-CA2,8180.042,6280.04-2.03
Rede Nacional de Ensino e Pesquisa - RNP2,7920.042,6150.04-2.45
T-Systems International GmbH2,6720.042,3950.041.93
Symantec Corporation2,4980.032,5600.04-10.85
Mirohost2,4320.032,1790.031.97
Buypass AS-9831633272,2010.031,9570.032.76
WoSign CA Limited2,1100.031,9760.03-2.44
NetLock Kft.2,0360.031,8760.03-0.84
Guardian Inc.1,9950.031,9220.03-5.16
Verisign1,9710.031,7550.032.61
EUNETIC GmbH1,9660.031,8040.03-0.43
SSL.com1,9440.031,8460.03-3.78
Nijimo, Inc.1,9240.032,0990.03-16.25
MyCompany1,8160.031,8050.03-8.08
GoGetSSL1,7250.021,3750.0214.62
AC Camerfirma S.A.1,7250.021,6310.02-3.37
dhosting.pl Sp. z o.o.1,7070.021,5630.02-0.22
CertCenter AG1,6900.021,4090.029.59
SSL Server1,5470.021,2000.0217.78
GMO CLOUD K.K.1,4880.021,2540.028.41
DealerInspire1,4170.021,1630.0211.32
OVH1,4150.021,2330.024.85
Soluciones Corporativas IP, SL1,4130.022,4030.04-46.28
Government of Korea1,3220.021,3730.02-12.03
N/A1,3190.021,1510.024.70
Globe Hosting, Inc.1,3110.021,1900.020.66
WoTrus CA Limited1,3070.021,1460.024.20
o2switch1,2900.0200.00N/A
SSL Corporation1,2870.021,1120.025.74
Comvive Servidores SL1,2390.021,1080.022.17
KDDI Web Communications Inc.1,2090.021,4490.02-23.77
Fasthosts Internet Limited1,1890.0200.00N/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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