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You are viewing an outdated report.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


    
Certificate Authority Market Share Report
June 1st, 2021

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 doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA May 2021
Count
May 2021
%
April 2021
Count
April 2021
%
Growth
%
Let's Encrypt3,247,91925.163,161,90525.050.46
Sectigo Limited2,516,44219.502,467,09919.54-0.24
DigiCert1,642,25612.721,613,96312.79-0.48
cPanel, Inc.786,2356.09767,2756.080.22
GlobalSign nv-sa579,1154.49570,2974.52-0.68
Unknown492,2493.81482,4663.82-0.21
GoDaddy.com, Inc.411,6973.19411,8413.26-2.23
Unizeto Technologies S.A.268,1262.08263,3362.09-0.42
Amazon254,6931.97246,9361.960.88
Starfield Technologies, Inc.235,6191.83230,3871.830.02
Cloudflare, Inc.227,9591.77214,2571.704.06
COMODO CA Limited168,0391.30170,7881.35-3.77
SecureCore134,5421.04130,7721.040.62
Plesk112,4390.87109,8390.870.12
Gehirn Inc.102,9050.8099,9440.790.70
SomeOrganization100,0580.7897,7830.770.08
none97,8540.7694,9970.750.74
Google Trust Services87,6400.6890,8940.72-5.70
DreamHost81,0310.6376,9410.613.00
ispgateway71,4280.5570,7080.56-1.20
Microsoft Corporation64,1670.5062,4720.490.46
Internet254,6520.4254,3210.43-1.60
home.pl S.A.47,2400.3745,8300.360.81
Actalis S.p.A.45,7940.3544,0880.351.59
GoGetSSL45,1880.3543,9370.350.59
GEANT Vereniging39,1250.3036,0410.296.17
Gandi38,1400.3037,6050.30-0.81
Entrust, Inc.37,3840.2936,6810.29-0.32
Parallels36,4910.2836,2620.29-1.58
TrustAsia Technologies, Inc.35,2950.2733,7680.272.23
Webhosting33,0590.2632,7690.26-1.33
Odin30,8200.2430,4380.24-0.97
Trustwave Holdings, Inc.30,5460.2430,8360.24-3.12
TERENA25,1120.1927,0010.21-9.04
Japan Registry Services Co., Ltd.24,8910.1924,2760.190.28
GeoTrust Inc.24,0600.1924,6530.20-4.55
Cybertrust Japan Co., Ltd.22,0620.1722,5950.18-4.50
SECOM Trust Systems CO.,LTD.20,4660.1619,7190.161.51
Acme Co19,0030.1518,2470.141.86
Internet Widgits Pty Ltd18,3740.1418,6160.15-3.47
Apache HTTP Server16,5160.1316,4700.13-1.92
Soluciones Corporativas IP, SL16,0440.1215,5800.120.72
WebSupport, s.r.o.16,0390.1215,7410.12-0.35
Network Solutions L.L.C.15,5840.1215,5560.12-2.02
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.15,5180.1215,4610.12-1.84
QuoVadis Limited14,4460.1114,5970.12-3.21
SH14,4070.1113,7910.112.17
Default Company Ltd14,2810.1113,2980.115.03
World4You Internet Services GmbH13,3900.1012,9140.101.41
ddos-guard12,3880.107,4920.0661.72
Test Self SSL Company11,0320.099,9750.088.17
DOMENY.PL sp. z o.o10,2580.0810,0080.080.25
Unspecified9,5210.078,8540.075.17
KAGOYA-JAPAN9,1320.079,0030.07-0.80
CloudFlare, Inc.8,7550.078,8380.07-3.12
Corporation Service Company8,6590.078,6280.07-1.85
www.sprinthost.ru8,2110.067,9630.060.85
ZeroSSL8,1370.068,2330.07-3.34
Basekit Ltd8,0210.067,3200.067.17
Trust Provider B.V.7,9830.068,1980.06-4.76
testexample7,1130.065,2380.0432.81
o2switch7,0350.056,4740.056.28
XX6,6290.056,4840.05-0.01
WEDOS Internet, a.s.6,2940.054,3350.0342.00
Alpiro s.r.o.6,1730.055,3010.0413.89
WoTrus CA Limited5,7970.043,2010.0377.12
Dreamcommerce S.A.5,6120.045,5170.04-0.51
Google Trust Services LLC5,1820.0400.00N/A
TAIWAN-CA5,1590.045,1170.04-1.39
dhosting.pl Sp. z o.o.5,0950.044,8800.042.11
T-Systems International GmbH4,8640.044,7790.04-0.46
SSL Corporation4,7610.044,6650.04-0.18
Mirohost4,5320.044,4630.04-0.68
Buypass AS-9831633274,3910.034,3490.03-1.25
GMO CLOUD K.K.4,3060.034,1720.030.94
DealerInspire3,9740.033,7930.032.47
Caddy Self-Signed3,9570.035,3710.04-27.95
SwissSign AG3,9210.033,9030.03-1.75
QuoVadis Trustlink B.V.3,7280.033,6920.03-1.24
GeoTrust, Inc.3,5830.033,5240.03-0.56
Beijing Knownsec Information Technology Co., Ltd3,5230.033,3170.033.88
HydrantID (Avalanche Cloud Corporation)3,5190.033,3720.032.07
CentOS Web Panel3,5110.033,7810.03-9.18
Bitrix3,3540.033,3140.03-1.02
NetLock Kft.3,3010.033,2600.03-0.97
The Trustico Group Ltd3,2360.033,1430.020.70
nazwa.pl sp. z o.o.3,1420.024,2050.03-26.92
thawte, Inc.3,0690.023,3840.03-11.30
N/A3,0610.023,0490.02-1.81
ONEsolution s.r.o.3,0160.022,9340.020.54
Guardian Inc.2,9880.022,9500.02-0.94
SSL Server2,9640.022,9390.02-1.36
FASTVPS2,7500.022,6690.020.77
Digital Element2,6890.022,6890.02-2.20
Fasthosts Internet Limited2,6540.022,4590.025.56
AttHost Sp z o.o.2,5350.022,4370.021.74
unaone2,4100.022,4230.02-2.72
MyCompany2,4090.022,3800.02-1.01
DivMulTech LLC2,3980.022,3700.02-1.04
SpinupWP2,3760.022,2540.023.10

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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