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You are viewing an outdated report. The latest version of this report was published on October 1st, 2017


    
Certificate Authority Market Share Report
April 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 doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA March 2006
Count
March 2006
%
February 2006
Count
February 2006
%
Growth
%
Verisign73,88129.2573,31729.73-1.62
Equifax (Geotrust)49,39019.5647,66919.331.16
Thawte38,41015.2138,02115.42-1.37
Comodo Limited19,2867.6419,6207.96-4.03
Starfield Technologies, Inc.6,9682.766,3392.577.32
Unknown4,6631.854,3821.783.89
Entrust.net4,0751.613,9351.601.10
AddTrust AB3,8111.512,9411.1926.51
SomeOrganization3,0911.223,0551.24-1.22
ChainedSSL2,1770.862,0500.833.68
SWsoft, Inc.2,1590.852,0780.841.44
Snake Oil, Ltd2,0010.791,9870.81-1.68
The USERTRUST Network1,7470.691,8280.74-6.70
XRamp Security Services Inc1,4710.581,3920.563.17
U.S. Government1,4620.581,4220.580.38
DigiCert Inc.1,2650.501,1520.477.21
Network Solutions L.L.C.1,1080.448990.3620.33
TC TrustCenter for Security in Data Networks GmbH8050.327720.311.80
IPS Certification Authority s.l.7670.307470.300.24
GlobalSign nv-sa6570.266300.261.81
Root CA6400.255950.245.01
Betrusted Japan Co.,Ltd.4160.163880.164.68
FreeSSL2880.113080.12-8.71
Positive Software Corporation2780.112280.0919.04
Deutsche Telekom AG2730.112890.12-7.77
ispgateway2560.102320.097.73
Plesk, Inc.2270.092400.10-7.66
GTE Corporation2230.092210.09-1.49
Comodo Japan Inc.1810.071680.075.19
Akamai1770.071730.07-0.11
TDC1760.071680.072.28
Kubota Systems Inc.1670.071620.070.64
Ipswitch,Inc.1590.061880.08-17.43
Apache HTTP Server1440.061400.060.42
Positive Software1310.051370.06-6.65
Plesk Inc.1200.051180.05-0.71
OCC1110.041030.045.21
Internet Widgits Pty Ltd1110.041150.05-5.77
NetLock Halozatbiztonsagi Kft.1100.041090.04-1.47
Firstserver, Inc.1060.04920.0412.49
Unizeto Sp. z o.o.1050.041130.05-9.28
GlobalSign Inc910.04910.04-2.37
ICS_TREE900.04830.035.86
Digital Signature Trust Co.890.04880.04-1.26
Thawte Certification870.03830.032.34
CRU870.03810.034.86
Trusted Secure Certificate Authority840.03700.0317.16
RM840.03760.037.91
IceWarp Software840.03900.04-8.88
CNRS780.03740.032.91
NTT Communications Corporation750.03650.0312.65
StartCom Ltd.740.03650.0311.15
ICP-Brasil690.03600.0212.28
XYZ Corporation650.03610.024.03
CAcert Inc.610.02420.0241.80
Japan Certification Services, Inc.600.02590.02-0.71
United Network Communications Co., Ltd.590.02590.02-2.37
Stunnel Developers Ltd570.02520.027.02
MULTICERT-CA570.02550.021.18
Equifax Secure Inc570.02660.03-15.68
BlueHost.Com550.02460.0216.73
FNMT540.02480.029.83
Your Name Webhosting510.0200.00N/A
WebMoney Transfer510.02510.02-2.37
Digi-Sign Limited450.02360.0122.04
TAIWAN-CA.COM440.02400.027.39
My Company Ltd440.02490.02-12.33
UniCERT Brasil Certificadora430.02480.02-12.54
Temp Certificate!430.02380.0210.48
Sun Microsystems Inc430.02580.02-27.62
University of Maryland410.02370.028.19
DFN-CERT Services GmbH410.02390.022.64
SCNC400.02400.02-2.37
S1 Corporation400.02400.02-2.37
T-Systems Enterprise Services GmbH390.0200.00N/A
Hostgator390.02440.02-13.46
SuSE Linux Web Server380.02360.013.05
Carnegie Mellon University380.02360.013.05
Default Web Site370.01330.019.46
Stalker Software, Inc.350.01350.01-2.37
Etisalat350.01350.01-2.37
Beocity350.01360.01-5.08
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH350.01330.013.55
University of Washington330.01280.0115.06
Sonera320.01300.014.14
SSL320.01300.014.14
IceWarp Ltd.320.0100.00N/A
CFC320.01300.014.14
cv. Candi Internet310.01310.01-2.37
University of Helsinki310.01280.018.09
Webmin Software300.01270.018.48
WEBMASTERS.COM300.01300.01-2.37
Pro Futuro S.A.300.01300.01-2.37
Postecom S.p.A.300.01310.01-5.52
Massachusetts Institute of Technology290.01290.01-2.37
IT Bureau of Hainan Province290.01290.01-2.37
CETI290.01290.01-2.37
Audkenni hf.290.01290.01-2.37
Advanced Extranet Server290.0100.00N/A
Prvni certifikacni autorita a.s.280.01280.01-2.37

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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