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You are viewing an outdated report.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


    
Certificate Authority Market Share Report
April 1st, 2003

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 2003
Count
March 2003
%
February 2003
Count
February 2003
%
Growth
%
Verisign47,71839.2543,92038.272.55
Thawte32,03326.3531,38827.35-3.67
Equifax (Geotrust)14,47111.9013,31511.602.59
Unknown3,9103.223,7213.24-0.81
Comodo Limited2,0101.651,6061.4018.14
Snake Oil, Ltd1,9401.601,9301.68-5.12
Equifax Secure Inc1,7951.482,2311.94-24.06
SomeOrganization1,4041.151,3261.16-0.06
Entrust.net1,0010.821,0290.90-8.18
U.S. Government9410.779200.80-3.45
Plesk Inc.6830.566590.57-2.17
The USERTRUST Network3630.303090.2710.89
TC TrustCenter for Security in Data Networks GmbH2260.192120.180.63
GlobalSign nv-sa1770.151680.15-0.55
Plesk, Inc.1630.131430.127.59
GTE Corporation1420.121290.113.90
Thawte Certification1370.111240.114.29
Ipswitch,Inc.1320.111240.110.48
Deutsche Telekom AG1090.09970.086.07
Advanced Extranet Server1010.08990.09-3.70
Kubota Systems Inc.1000.08970.08-2.69
Internet Widgits Pty Ltd880.07860.07-3.41
ispgateway850.07840.07-4.48
*.ceti.pl590.05590.05-5.61
CyberTrust Japan, Inc.570.05570.05-5.61
FreeSSL510.04420.0414.62
PKI Partner AB500.04470.040.42
Ensim Corporation490.04470.04-1.59
Esat Net410.03480.04-19.37
zNET Internet Services400.03400.03-5.61
Beocity400.03380.03-0.64
University of Florida360.03350.03-2.91
TAIWAN-CA.COM Inc.360.03350.03-2.91
NeoNova B.V.360.03350.03-2.91
Webmin Software330.03310.030.48
SCNC320.03340.03-11.16
media3300.02300.03-5.61
Tele Danmark300.02240.0217.99
Ring d.o.o.300.02310.03-8.65
WebMoney Transfer290.02290.03-5.61
Unizeto Sp. z o.o.290.02270.021.38
Franke & Partner290.02290.03-5.61
NetLock Halozatbiztonsagi Kft.270.02250.021.94
MDM iNet, LLC270.02270.02-5.61
Onyx Internet260.02260.02-5.61
HJ.NET260.02260.02-5.61
SOGO KEIBI HOSHO CO.LTD250.02210.0212.37
XYZ Corporation240.02190.0219.23
IceWarp Software240.02200.0213.27
IPS Seguridad CA240.02240.02-5.61
Advantagecom Networks, Inc.240.02240.02-5.61
Stalker Software, Inc.230.02220.02-1.32
Massachusetts Institute of Technology230.02230.02-5.61
BSG220.02230.02-9.71
University of Maryland210.02200.02-0.89
KICA210.02200.02-0.89
community musician200.0200.00N/A
DeZines Web Hosting200.02200.02-5.61
Carnegie Mellon University200.02180.024.88
Stargate.Net, Inc.190.02190.02-5.61
Rutgers University190.02190.02-5.61
Your Organization180.01200.02-15.05
XAO Inc.180.01180.02-5.61
Web Hosting180.01180.02-5.61
UUNET UK180.01180.02-5.61
Positive Software180.01130.0130.70
Sofia Kallin170.01170.01-5.61
NIH170.01160.010.29
Logacont AG170.01170.01-5.61
Linux Test Server170.01170.01-5.61
Indra's Net, Inc.170.01170.01-5.61
HAL interactive, d.o.o.170.01170.01-5.61
University of Helsinki160.01160.01-5.61
Technische Universitaet Chemnitz160.01140.017.88
CNRS150.01110.0128.72
University of Waterloo140.01140.01-5.61
Sun Microsystems Inc140.01140.01-5.61
ServeLinux Networks, Inc.140.01140.01-5.61
KMD140.01110.0120.13
HDE140.01140.01-5.61
Baltimore Technologies Japan Co.,Ltd.140.01130.011.65
Aaex Corp.140.01120.0110.12
University of Wisconsin - Stevens Point (UWSP)130.01110.0111.55
Postecom s.p.a.130.01120.012.26
Kasetsart University130.01130.01-5.61
FNMT130.0100.00N/A
Radio Data Group Inc120.01120.01-5.61
PVT a.s.120.01130.01-12.87
INFN120.01100.0113.27
ICP-Brasil120.0100.00N/A
Etisalat120.01130.01-12.87
Dummy certificate120.01110.012.97
DeZines Web Hosting Corporation120.01120.01-5.61
Apache HTTP Server120.01120.01-5.61
Temp Certificate!110.01110.01-5.61
Superb Internet Corp.110.01110.01-5.61
OCC110.0100.00N/A
MakoLab110.01110.01-5.61
Logical Net Corp110.01100.013.83
IPrimus USA110.01110.01-5.61

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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