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Certificate Authority Market Share Report
March 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 February 2019
Count
February 2019
%
January 2019
Count
January 2019
%
Growth
%
COMODO CA Limited1,240,75828.501,247,86129.41-3.09
DigiCert708,01216.26692,14116.31-0.30
Let's Encrypt658,57415.13619,84214.613.56
GlobalSign nv-sa318,0987.31311,4157.34-0.44
GoDaddy.com, Inc.238,3995.48296,6016.99-21.66
cPanel, Inc.135,5423.11125,0102.955.68
Unknown115,2832.65111,2972.620.96
Amazon95,6672.2083,9221.9811.11
Sectigo Limited72,6081.6700.00N/A
Google Trust Services55,3961.2754,3321.28-0.63
Starfield Technologies, Inc.49,8361.1447,6071.122.03
Internet232,3960.7431,9340.75-1.12
TERENA31,0880.7130,7140.72-1.35
SomeOrganization26,0590.6025,1850.590.85
GeoTrust Inc.26,0570.6028,5490.67-11.04
Microsoft Corporation25,5990.5924,4320.582.12
Entrust, Inc.25,3080.5824,8010.58-0.54
ispgateway25,0830.5824,2440.570.84
Plesk24,0140.5522,0690.526.06
Unizeto Technologies S.A.23,9910.5523,5060.55-0.52
none22,3210.5121,3190.502.05
Gandi20,8630.4821,0460.50-3.38
Parallels19,3370.4419,3590.46-2.64
Trustwave Holdings, Inc.16,2080.3715,5560.371.55
Apache HTTP Server14,5640.3314,5410.34-2.38
Odin14,1240.3213,8740.33-0.78
SecureCore14,0330.3212,2870.2911.32
Network Solutions L.L.C.13,6050.3113,6520.32-2.87
home.pl S.A.13,0610.3012,9640.31-1.80
QuoVadis Limited11,6640.2711,5350.27-1.44
Cybertrust Japan Co., Ltd.11,1440.2610,9190.26-0.53
NN.RU8,8830.208,8830.21-2.53
Internet Widgits Pty Ltd8,4630.198,2530.19-0.05
Gehirn Inc.7,0540.165,7110.1320.39
Actalis S.p.A./033585209676,8200.166,3790.154.20
nazwa.pl sp. z o.o.5,7430.135,4640.132.44
Corporation Service Company5,4020.125,0830.123.58
StartCom Ltd.5,4010.125,5780.13-5.63
Webhosting5,3640.124,9230.126.20
DreamHost5,0670.124,1680.1018.49
io.ua4,9900.114,9490.12-1.73
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.4,9000.114,2290.1012.93
SECOM Trust Systems CO.,LTD.4,7410.114,0780.1013.31
Trust Provider B.V.4,4820.104,4690.11-2.25
The Trustico Group Ltd4,4580.104,1210.105.44
thawte, Inc.4,3140.105,1440.12-18.26
WebSupport, s.r.o.4,2570.104,0550.102.32
Hosting Ukraine LLC3,9420.093,8060.090.95
Japan Registry Services Co., Ltd.3,6210.083,3760.084.54
Nijimo, Inc.3,5030.083,5690.08-4.34
GeoTrust, Inc.3,3340.083,4740.08-6.46
HydrantID (Avalanche Cloud Corporation)3,3310.083,0260.077.29
Pizza-Taxi.de GmbH / CA3,3170.083,3060.08-2.21
TrustAsia Technologies, Inc.2,9480.073,5570.08-19.22
Symantec Corporation2,8590.073,3910.08-17.83
DOMENY.PL sp. z o.o2,7970.062,7960.07-2.50
KDDI Web Communications Inc.2,5750.062,9580.07-15.15
SSL.com2,4230.065,8680.14-59.75
SH2,3480.052,2200.053.09
Default Company Ltd2,2150.052,2500.05-4.05
National Institute of Informatics2,1950.052,1490.05-0.45
WEDOS Internet, a.s.2,1730.052,0460.053.52
CloudFlare, Inc.2,1030.051,9880.053.10
Acme Co2,0520.051,4060.0342.25
Comodo Limited2,0150.052,0090.05-2.24
T-Systems International GmbH1,8960.041,8650.04-0.91
KAGOYA-JAPAN1,8890.041,8060.041.95
Rede Nacional de Ensino e Pesquisa - RNP1,8800.041,8300.040.13
TAIWAN-CA1,8650.041,7680.042.81
SwissSign AG1,8260.041,7940.04-0.80
Test Self SSL Company1,8110.041,7510.040.81
XX1,7360.041,6730.041.14
Government of Korea1,5970.041,6280.04-4.39
World4You Internet Services GmbH1,4580.031,3440.035.73
WoSign CA Limited1,4450.031,5430.04-8.72
AC Camerfirma S.A.1,4110.031,4050.03-2.12
www.sprinthost.ru1,3510.031,2830.032.63
MyCompany1,3410.031,3190.03-0.91
NetLock Kft.1,3040.031,3140.03-3.28
AffirmTrust1,2430.031,2100.030.12
Mirohost1,2140.031,1660.031.48
EUNETIC GmbH1,2050.031,1530.031.86
UIC1,1690.031,1690.03-2.53
Buypass AS-9831633271,1270.031,0690.032.75
Soluciones Corporativas IP, SL1,1000.039480.0213.09
Verisign1,0830.021,0840.03-2.62
CertCenter AG9890.028990.027.22
dhosting.pl Sp. z o.o.9460.028850.024.18
Comvive Servidores SL8430.028100.021.44
Thawte, Inc.8110.028600.02-8.09
Globe Hosting, Inc.7610.027150.023.74
U.S. Government7540.027850.02-6.38
Fiducia & GAD IT AG7390.0200.00N/A
Equifax (Geotrust)7290.027390.02-3.85
KEYNECTIS6950.028390.02-19.26
OVH6860.026450.023.66
Beijing Knownsec Information Technology Co., Ltd6660.026660.02-2.53
Dreamcommerce S.A.6560.025380.0118.84
DHIMYOTIS6080.016030.01-1.73
TBS INTERNET6040.016010.01-2.05

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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