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You are viewing an outdated report. The latest version of this report was published on February 1st, 2025


    
Certificate Authority Market Share Report
April 1st, 2011

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 March 2011
Count
March 2011
%
February 2011
Count
February 2011
%
Growth
%
Equifax (Geotrust)143,02717.64146,19518.62-5.26
GoDaddy.com, Inc.132,83716.38127,16016.201.17
Verisign88,97710.9787,82711.19-1.89
Comodo Limited50,9356.2849,6756.33-0.70
Thawte40,1204.9542,0655.36-7.64
DigiCert27,9533.4526,3453.362.75
Thawte, Inc.27,6693.4124,5333.129.22
GeoTrust, Inc.23,4362.8917,9932.2926.14
Unknown20,2732.5019,5402.490.48
COMODO CA Limited19,4062.3918,5132.361.51
GeoTrust Inc.18,4942.2816,3622.089.46
Comodo CA Limited18,4842.2817,4462.222.60
Network Solutions L.L.C.18,0802.2317,4892.230.12
GlobalSign nv-sa15,6071.9314,8451.891.81
Starfield Technologies, Inc.14,8161.8314,1111.801.68
GlobalSign14,6881.8114,1981.810.18
Entrust, Inc.10,3251.279,9931.270.06
SecureTrust Corporation6,6800.826,4260.820.67
TERENA6,4260.796,1480.781.22
Alpha4,8270.604,5460.582.83
SomeOrganization4,5100.564,5130.57-3.22
StartCom Ltd.3,7620.463,4250.446.37
Parallels3,6460.453,5190.450.34
Akamai Technologies Inc3,2000.392,9880.383.71
SECOM Trust Systems CO.,LTD.2,4970.312,4430.31-1.02
SWsoft, Inc.2,4230.302,4330.31-3.56
Cybertrust Japan Co., Ltd.2,2540.282,0870.274.59
Root CA1,9210.241,8820.24-1.15
Sun Microsystems Inc1,8770.238160.10122.76
thawte, Inc.1,8050.221,7470.220.06
CAcert Inc.1,7000.211,6370.210.57
Servision Inc.1,6700.211,6240.21-0.41
GeoTrust Inc1,5370.191,4110.185.49
Betrusted Japan Co., Ltd.1,5280.191,6850.21-12.18
Unizeto Technologies S.A.1,5210.191,4780.19-0.34
Cybertrust1,4510.181,4670.19-4.21
U.S. Government1,3560.171,3190.17-0.44
SECOM Trust.net1,2860.161,2890.16-3.38
TC TrustCenter GmbH1,2600.161,2470.16-2.15
Snake Oil, Ltd1,1320.141,1300.14-2.99
Secure Business Services, Inc.1,0600.131,0950.14-6.25
Google Inc1,0270.139700.122.53
ips Certification Authority1,0030.129770.12-0.58
Register.com9740.129380.120.56
QuoVadis Limited9570.129120.121.62
Cybertrust Inc9170.118640.112.78
ispgateway9150.118930.11-0.77
UIC8800.118580.11-0.67
GTE Corporation8660.118460.11-0.87
Trusted Secure Certificate Authority8120.107940.10-0.96
none6880.086510.082.35
T-Systems Enterprise Services GmbH6570.086830.09-6.84
GANDI SAS6440.086120.081.91
NetLock Halozatbiztonsagi Kft.5190.064920.062.16
AusCERT5060.064840.061.24
EUNETIC GmbH4600.064360.062.17
Entrust.net4430.054710.06-8.91
National Institute of Informatics4340.054810.06-12.62
Firstserver, Inc4270.054220.05-2.01
Parallels, Inc.4110.053820.054.19
Government of Korea3750.053400.046.81
OVH SAS3730.053350.047.83
OCC3570.043420.041.09
TBS INTERNET3440.043400.04-2.02
Internet23430.041370.02142.46
WTF ALFA3360.043310.04-1.69
Sonera3360.043250.040.12
Autistici/Inventati3300.042780.0414.96
suresupport.com3230.043260.04-4.05
Apache HTTP Server3210.042920.046.46
FNMT3120.043050.04-0.93
Internet Widgits Pty Ltd3070.043020.04-1.55
ICP-Brasil3010.042930.04-0.51
TAIWAN-CA.COM Inc.2950.043020.04-5.40
Globe Hosting, Inc.2830.032480.0310.51
TDC2570.032530.03-1.63
WebSpace-Forum, Thomas Wendt2390.032350.03-1.51
SonicWALL, Inc.2370.032300.03-0.21
Zimbra Collaboration Suite2360.032280.030.24
RBC Hosting Center2340.032290.03-1.04
OptimumSSL CA2090.032030.03-0.30
SYS-CON Media2070.031900.025.51
IPS Certification Authority s.l.2030.032080.03-5.49
XX1970.021930.02-1.15
Digi-Sign Limited1920.021910.02-2.65
SiteGround LLC.1900.021660.0210.84
Getronics PinkRoccade Nederland B.V.1890.021880.02-2.64
WoSign, Inc.1780.021690.022.00
InterWorx1720.021690.02-1.44
America Online Inc.1590.021530.020.64
T-Systems International GmbH1520.0200.00N/A
Dell Inc.1520.021320.0211.52
GLOBE HOSTING CERTIFICATION AUTHORITY1490.021510.02-4.44
My Company Ltd1440.021520.02-8.25
Ministere education nationale (MENESR)1440.021330.024.85
Positive Software1430.021350.022.58
New Dream Network, LLC.1400.021350.020.43
HTTPS Management Certificate for SonicWALL (self-signed)1400.021280.025.92
TNC1380.021390.02-3.85
XRamp Security Services Inc1370.021340.02-0.99

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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