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You are viewing an outdated report. The latest version of this report was published on January 1st, 2023

Certificate Authority Market Share Report
February 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.

DeZines Web Hosting CA Certificate Historical Market Share Graph

CA January 2002
January 2002
December 2001
December 2001
Equifax Secure Inc5,3727.684,8437.255.93
Snake Oil, Ltd1,4612.091,4162.12-1.47
U.S. Government3200.462820.428.37
Plesk Inc.1410.201150.1717.09
Internet Widgits Pty Ltd1000.14870.139.77
TC TrustCenter for Security in Data Networks GmbH960.14920.14-0.35
Equifax (Geotrust)960.14580.0958.07
Thawte Certification790.11690.109.34
Esat Net750.11750.11-4.50
Ring Datacom660.09660.10-4.50
Kubota Systems Inc.630.09610.09-1.37
The USERTRUST Network590.08450.0725.21
GlobalSign nv-sa550.08470.0711.75
Franke & Partner540.08540.08-4.50
GTE Corporation500.07350.0536.43
Advanced Extranet Server450.06360.0519.37
ProAxis Communications, a us.Net company430.06440.07-6.67
NeoNova B.V.430.06420.06-2.23
zNET Internet Services410.06410.06-4.50
Ensim Corporation360.05280.0422.78
Media3 Technologies L.L.C.340.05340.05-4.50
Deutsche Telekom AG320.05310.05-1.42
Web Hosting300.04310.05-7.58
Onyx Internet290.04290.04-4.50
University of Florida280.04270.04-0.96
Interliant, Inc.270.04210.0322.78
Deep Industry260.04250.04-0.68
Indra's Net, Inc.240.03230.03-0.35
DeZines Web Hosting240.03240.04-4.50
Stargate Industries, LLC230.03230.03-4.50
UUNET UK220.03200.035.05
Linux Test Server220.03240.04-12.46
domainfactory GmbH190.03160.0213.41
Radio Data Group Inc190.03180.030.80
HAL interactive, d.o.o.190.03190.03-4.50
DeZines Web Hosting Corporation180.03190.03-9.53
Web Site Fortress170.02180.03-9.81
Massachusetts Institute of Technology170.02170.03-4.50
CyberTrust Japan, Inc.170.02170.03-4.50
Idonex AB160.02190.03-19.58
TAT GmbH150.02150.02-4.50
Makolab s.c.150.02150.02-4.50
University of Maryland140.02130.022.85
TAIWAN-CA.COM Inc.130.02110.0212.86
Barak ITC130.0200.00N/A
University of Helsinki120.02130.02-11.85
IndyWeb Inc.120.02120.02-4.50
IPrimus USA120.02130.02-11.85
Estore Corp120.02140.02-18.14
WebMoney Transfer110.0200.00N/A
Superb Internet Corp.110.02110.02-4.50
Schell Computersysteme110.0200.00N/A
Oy Finland Ab Ltd.110.02110.02-4.50
Kommunikationssysteme ShE GmbH110.02110.02-4.50
A&S Systemtechnik100.01100.01-4.50
International Business Machines Corporation90.0100.00N/A
IPS Seguridad CA90.0170.0122.78
WebNexus Communications80.0180.01-4.50
Unizeto Sp. z o.o.80.0160.0127.33
Tampere University of Technology80.0180.01-4.50
Swisskey AG80.01100.01-23.60
SYLABA Internet80.0180.01-4.50
ProSalg as80.0180.01-4.50
Deutsches Forschungsnetz80.0100.00N/A
the Internet Outlet70.0170.01-4.50
Webmin Software70.0100.00N/A
WEB.DE AG70.0160.0111.42
University of Waterloo70.0160.0111.42
Universitaet Heidelberg70.0160.0111.42
Stalker Software, Inc.70.0100.00N/A
Media3 Inc70.0170.01-4.50
Logical Net Corp70.0160.0111.42
Iquent70.0170.01-4.50 srl70.0170.01-4.50
Developers Choice LLC70.0100.00N/A
American University of Beirut70.0100.00N/A
Your Organization60.0100.00N/A
XAO Inc.60.0160.01-4.50
Wantree Internet60.0100.00N/A
Verein trash.net60.0100.00N/A
University of Wisconsin - Stevens Point (UWSP)60.0170.01-18.14

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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