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You are viewing an outdated report.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

Certificate Authority Market Share Report
October 1st, 2000

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 September 2000
September 2000
August 2000
August 2000
Snake Oil, Ltd7941.406511.1719.51
Equifax Secure Inc7101.255510.9926.26
Esat Net1220.211250.22-4.36
CETI s.c.790.14800.14-3.24
U.S. Government770.14660.1214.32
Corpex Ltd740.13750.13-3.32
Franke & Partner600.11610.11-3.62
Netland Internet Services560.10560.10-2.01
Thawte Certification470.08410.0712.33
TAT GmbH430.0800.00N/A
Web Hosting420.07430.08-4.29
Onyx Internet410.07390.073.01
TC TrustCenter for Security in Data Networks GmbH370.07290.0525.02
Media3 Technologies L.L.C.360.06490.09-28.01
Vest Internett350.06350.06-2.01
DeZines Web Hosting350.06360.06-4.73
Linux Test Server340.06220.0451.43
BroadBand Communications, Inc.340.06760.14-56.16
zNET Internet Services330.06600.11-46.11
Vellus Products Inc270.0500.00N/A
Indra's Net, Inc.270.05280.05-5.51
University of Florida260.05260.05-2.01
Alleanza I.T.B.240.04240.04-2.01
DeZines Web Hosting Corporation230.04230.04-2.01
MBnet Networking Inc.220.04230.04-6.27
Massachusetts Institute of Technology210.04190.038.30
the Internet Outlet200.04200.04-2.01
Kubota Systems Inc.200.04180.038.87
HAL interactive, d.o.o.200.04200.04-2.01
For Demo Purposes Only200.04200.04-2.01
ChilNet S.A.200.0400.00N/A
ANET St. Louis200.04200.04-2.01
Webkeepers Limited190.03210.04-11.35
Test Organisation190.03160.0316.36
Superb Internet Corp.190.03200.04-6.91
Inter Clear Service Ltd180.03190.03-7.17
Aktiv!NETZ Internet Presentations GmbH180.03180.03-2.01
UUNET UK170.03180.03-7.46
Kommunikationssysteme ShE GmbH170.03170.03-2.01
CyberGate Inc.170.03190.03-12.33
Covalent Technologies, Inc.170.03160.034.11
IndyWeb Inc.160.03170.03-7.78
Digital Visions160.03160.03-2.01
Spekter Bergen AS150.03200.04-26.51
Wantree Internet140.0200.00N/A
WebNexus Communications130.02150.03-15.08
Marketwizz Internet Solutions130.02130.02-2.01
ITBS OnLine130.02130.02-2.01
GlobalSign nv-sa130.02180.03-29.23
Deutsche Telekom AG130.0290.0241.54
ProSalg as120.0200.00N/A
Powersurge Technologies, Inc.120.02150.03-21.61
University of Economics and BA110.02100.027.79
InterX Technologies110.02110.02-2.01
BelSign NV110.02110.02-2.01
dgSoft Internet Sevices100.02100.02-2.01
Swisskey AG100.02100.02-2.01
Radio Data Group Inc100.02100.02-2.01
National Institutes of Health100.02100.02-2.01
University of Oulu90.0290.02-2.01
University of Maryland90.0290.02-2.01
My Company Ltd90.0290.02-2.01 srl90.0200.00N/A
Internet Widgits Pty Ltd90.02220.04-59.91
Internet Solutions90.0290.02-2.01
Inficad Computing and Design90.0200.00N/A
IPS Seguridad CA90.0270.0125.98
CyberGate, Inc.90.02110.02-19.83
A&S Systemtechnik90.0290.02-2.01
University of Helsinki80.0180.01-2.01
Technische Universitaet Chemnitz80.0180.01-2.01
Netalia Internet Ltd80.0100.00N/A
MFM Communication Software, Inc.80.0180.01-2.01
GTM Internet, Inc.80.0180.01-2.01
CompuSource (Pty) Ltd80.0100.00N/A
Versaggi Information Systems70.0170.01-2.01
Polska OnLine70.0100.00N/A
Norwegian University of Science and Technology70.0170.01-2.01
Netlink, Inc.70.0190.02-23.79
Netland Oy70.0170.01-2.01
National Renewable Energy Lab70.0170.01-2.01

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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