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You are viewing an outdated report. The latest version of this report was published on May 1st, 2018

Certificate Authority Market Share Report
March 1st, 2002

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 2002
February 2002
January 2002
January 2002
Equifax Secure Inc6,6789.035,3727.6817.60
Snake Oil, Ltd1,7192.321,4612.0911.31
U.S. Government3970.543200.4617.36
Equifax (Geotrust)1980.27960.1495.11
Plesk Inc.1870.251410.2025.46
TC TrustCenter for Security in Data Networks GmbH1070.14960.145.44
Internet Widgits Pty Ltd990.131000.14-6.34
The USERTRUST Network760.10590.0821.86
Thawte Certification740.10790.11-11.39
Kubota Systems Inc.660.09630.09-0.89
GlobalSign nv-sa630.09550.088.36
Esat Net630.09750.11-20.54
GTE Corporation620.08500.0717.31
Franke & Partner550.07540.08-3.65
Advanced Extranet Server510.07450.067.21
Ring Datacom460.06660.09-34.07
NeoNova B.V.420.06430.06-7.60
Ensim Corporation420.06360.0510.37
zNET Internet Services410.06410.06-5.40
Deutsche Telekom AG400.05320.0518.25
University of Florida290.04280.04-2.02
Onyx Internet280.04290.04-8.66
Deep Industry270.04260.04-1.76
DeZines Web Hosting230.03240.03-9.34
UUNET UK220.03220.03-5.40
Indra's Net, Inc.220.03240.03-13.28
Stargate Industries, LLC210.03230.03-13.63
Linux Test Server200.03220.03-14.00
Interliant, Inc.200.03270.04-29.93
CyberTrust Japan, Inc.190.03170.025.73
Radio Data Group Inc180.02190.03-10.38
Massachusetts Institute of Technology180.02170.020.17
HAL interactive, d.o.o.180.02190.03-10.38
DeZines Web Hosting Corporation170.02180.03-10.65
University of Maryland150.02140.021.36
TAIWAN-CA.COM Inc.150.02130.029.16
Inter Clear Service Ltd150.0200.00N/A
University of Helsinki140.02120.0210.37
Idonex AB130.02160.02-23.14
Estore Corp130.02120.022.48
IPrimus USA120.02120.02-5.40
Certipor S.A.120.0200.00N/A
Technische Universitaet Chemnitz110.0100.00N/A
Superb Internet Corp.110.01110.02-5.40
Schell Computersysteme110.01110.02-5.40
Oy Multi.fi Finland Ab Ltd.110.01110.02-5.40
Barak ITC110.01130.02-19.95
International Business Machines Corporation100.0190.015.11
IndyWeb Inc.100.01120.02-21.17
A&S Systemtechnik100.01100.01-5.40
Webmin Software90.0170.0121.63
Unizeto Sp. z o.o.90.0180.016.43
Universitaet Heidelberg90.0170.0121.63
IPS Seguridad CA90.0190.01-5.40
WebNexus Communications80.0180.01-5.40
Web Hosting80.01300.04-74.77
University of Wisconsin - Stevens Point (UWSP)80.0160.0126.13
Tampere University of Technology80.0180.01-5.40
Sun Microsystems Inc80.0100.00N/A
SYLABA Internet80.0180.01-5.40
Interzona.net srl80.0170.018.12
debis Systemhaus Oesterreich GmbH70.0100.00N/A
WEB.DE AG70.0170.01-5.40
University of Waterloo70.0170.01-5.40
Stalker Software, Inc.70.0170.01-5.40
Logical Net Corp70.0170.01-5.40
Deutsches Forschungsnetz70.0180.01-17.22
Columbia University70.0100.00N/A
the Internet Outlet60.0170.01-18.91
Your Organization60.0160.01-5.40
WebMoney Transfer60.01110.02-48.40
Wantree Internet60.0160.01-5.40
Verein trash.net60.0160.01-5.40
Uppsala universitet60.0100.00N/A
Swisskey AG60.0180.01-29.05
ProSalg as60.0180.01-29.05
PVT a.s.60.0100.00N/A
NetLock Halozatbiztonsagi Kft.60.0100.00N/A
IKS GmbH60.0100.00N/A

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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