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You are viewing an outdated report. The latest version of this report was published on October 1st, 2020


    
Certificate Authority Market Share Report
January 1st, 2006

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 December 2005
Count
December 2005
%
November 2005
Count
November 2005
%
Growth
%
Verisign73,62030.4372,99831.23-2.55
Equifax (Geotrust)45,36918.7642,97318.392.02
Thawte37,91815.6836,93815.80-0.81
Comodo Limited20,4088.4420,2118.65-2.43
Starfield Technologies, Inc.5,4982.274,8172.0610.29
Unknown4,0381.673,7141.595.06
Entrust.net3,8341.583,6411.561.75
SomeOrganization3,1371.303,0381.30-0.22
The USERTRUST Network2,3370.972,4171.03-6.57
Snake Oil, Ltd2,0340.842,0560.88-4.40
SWsoft, Inc.1,9280.801,8300.781.80
ChainedSSL1,8730.771,6690.718.44
AddTrust AB1,5960.668680.3777.67
U.S. Government1,4200.591,3800.59-0.57
XRamp Security Services Inc1,2250.511,1740.500.83
DigiCert Inc.1,0360.439260.408.11
TC TrustCenter for Security in Data Networks GmbH7670.327320.311.25
IPS Certification Authority s.l.7470.317080.301.95
Network Solutions L.L.C.6380.265260.2317.20
GlobalSign nv-sa6090.255660.243.97
Root CA5330.224950.214.05
FreeSSL4100.174460.19-11.17
Betrusted Japan Co.,Ltd.3520.153260.144.34
Plesk, Inc.2980.123060.13-5.90
Deutsche Telekom AG2950.122870.12-0.68
GTE Corporation2410.102450.10-4.95
ispgateway2270.092250.10-2.51
Ipswitch,Inc.2100.091990.091.97
TDC1610.071500.063.72
Akamai1570.061470.063.20
Kubota Systems Inc.1540.061490.06-0.13
Comodo Japan Inc.1510.061300.0612.24
Apache HTTP Server1510.061440.061.33
Positive Software1480.061400.062.15
Plesk Inc.1340.061330.06-2.64
Internet Widgits Pty Ltd1200.051200.05-3.37
Positive Software Corporation1130.05610.0379.00
Unizeto Sp. z o.o.1020.04970.041.61
NetLock Halozatbiztonsagi Kft.1020.04980.040.57
OCC1010.04970.040.61
Digital Signature Trust Co.930.04840.046.98
Thawte Certification920.04980.04-9.29
IceWarp Software920.04900.04-1.22
ICS_TREE830.03770.034.16
Firstserver, Inc.800.03650.0318.93
GlobalSign Inc730.03680.033.73
CRU690.03640.034.18
RM680.03660.03-0.44
CNRS680.03620.035.98
Equifax Secure Inc670.03720.03-10.08
Azero620.03620.03-3.37
United Network Communications Co., Ltd.590.02590.03-3.37
Sun Microsystems Inc590.02570.020.02
Trusted Secure Certificate Authority570.02510.028.00
Japan Certification Services, Inc.560.02560.02-3.37
NTT Communications Corporation550.02430.0223.60
ICP-Brasil550.02560.02-5.10
XYZ Corporation530.02540.02-5.16
UniCERT Brasil Certificadora530.02480.026.69
Stunnel Developers Ltd530.02500.022.43
MULTICERT-CA520.02530.02-5.19
My Company Ltd500.02480.020.66
WebMoney Transfer490.02460.022.93
StartCom Ltd.490.02370.0227.97
Baltimore Technologies Japan Co.,Ltd.490.02470.020.74
FNMT430.02390.026.54
SCNC410.02410.02-3.37
DFN-CERT Services GmbH410.02390.021.58
Hostgator400.02360.027.37
SuSE Linux Web Server380.02340.018.00
University of Maryland370.02360.02-0.69
Temp Certificate!370.02330.018.34
Beocity360.01380.02-8.46
S1 Corporation350.01320.015.69
Etisalat350.01350.01-3.37
Pro Futuro S.A.340.01290.0113.29
Carnegie Mellon University330.01320.01-0.35
BlueHost.Com330.01260.0122.64
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH330.01310.012.86
CETI320.01320.01-3.37
Audkenni hf.320.01310.01-0.25
Webmin Software310.01350.01-14.41
Stalker Software, Inc.310.01290.013.29
Advanced Extranet Server310.01300.01-0.15
cv. Candi Internet300.01300.01-3.37
WEBMASTERS.COM290.0100.00N/A
University of Helsinki290.01290.01-3.37
TAIWAN-CA.COM290.0100.00N/A
SSL290.0100.00N/A
Massachusetts Institute of Technology290.01270.013.79
IceWarp Ltd.290.01310.01-9.61
Default Web Site290.01250.0112.09
domainsofnote.com280.01280.01-3.37
Prvni certifikacni autorita a.s.280.0100.00N/A
University of Washington270.01250.014.36
CFC270.01290.01-10.03
IT Bureau of Hainan Province260.0100.00N/A
Franke & Partner260.01260.01-3.37
CsideNet260.0100.00N/A
XCOM250.01250.01-3.37

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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