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You are viewing an outdated report. The latest version of this report was published on December 1st, 2022

Certificate Authority Market Share Report
March 1st, 2001

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 2001
February 2001
January 2001
January 2001
Equifax Secure Inc1,2372.109521.6229.55
Snake Oil, Ltd1,0671.819671.6410.01
WWW-Service Online Dienstleistungen GmbH1350.2300.00N/A
U.S. Government1210.201150.204.90
Esat Net1120.191120.19-0.30
Easynet France820.14830.14-1.50
Ring d.o.o.720.1200.00N/A
Internet Widgits Pty Ltd720.12590.1021.67
Corpex Ltd650.11660.11-1.81
Franke & Partner580.10590.10-1.99
zNET Internet Services540.09550.09-2.11
Netland Internet Services500.08510.09-2.25
Media3 Technologies L.L.C.470.08480.08-2.38
Thawte Certification460.08430.076.66
TC TrustCenter for Security in Data Networks GmbH460.08400.0714.66
Web Hosting390.07380.062.33
Onyx Internet390.07390.07-0.30
BroadBand Communications, Inc.330.06330.06-0.30
TAT GmbH310.05320.05-3.41
DeZines Web Hosting310.05310.05-0.30
Vest Internett300.05300.05-0.30
Kubota Systems Inc.270.05280.05-3.86
University of Florida260.04260.04-0.30
Indra's Net, Inc.260.04270.05-3.99
Linux Test Server240.04230.044.04
Alleanza I.T.B.230.04230.04-0.30
DeZines Web Hosting Corporation210.04210.04-0.30
HAL interactive, d.o.o.200.03200.03-0.30
UUNET UK190.03170.0311.43
ANET St. Louis190.03190.03-0.30
Inter Clear Service Ltd180.03180.03-0.30
Superb Internet Corp.170.03180.03-5.84
Massachusetts Institute of Technology170.03160.035.93
IndyWeb Inc.160.03160.03-0.30
For Demo Purposes Only160.03140.0213.95
Deutsche Telekom AG160.03150.036.35
Aktiv!NETZ Internet Presentations GmbH160.03170.03-6.16
ProSalg as150.03150.03-0.30
Plesk Inc.150.0300.00N/A
GlobalSign nv-sa150.03130.0215.04
Estore Corp130.02130.02-0.30
Advanced Extranet Server130.0200.00N/A
Swisskey AG120.0290.0232.94
Powersurge Technologies, Inc.120.02120.02-0.30
Media3 Inc120.02120.02-0.30
Marketwizz Internet Solutions120.02120.02-0.30
Kommunikationssysteme ShE GmbH120.02130.02-7.97
Oy Finland Ab Ltd.110.02110.02-0.30
InterX Technologies110.02110.02-0.30
ITBS OnLine110.02120.02-8.61
GTE Corporation110.0290.0221.86
Covalent Technologies, Inc.110.02140.02-21.66
WebNexus Communications100.0290.0210.78
Wantree Internet100.02120.02-16.92
University of Maryland100.02100.02-0.30
University of Economics and BA100.02110.02-9.36
Digital Visions100.02120.02-16.92
dgSoft Internet Sevices90.0280.0112.16
Technische Universitaet Chemnitz90.0290.02-0.30
the Internet Outlet80.0190.02-11.38
University of Mainz80.0180.01-0.30
University of Helsinki80.0180.01-0.30
Test Organisation80.01190.03-58.02
Radio Data Group Inc80.01200.03-60.12
MFM Communication Software, Inc.80.0170.0113.95
Idonex AB80.0100.00N/A
IPS Seguridad CA80.0180.01-0.30
GTM Internet, Inc.80.0180.01-0.30
A&S Systemtechnik80.0180.01-0.30
University of Wisconsin - Stevens Point (UWSP)70.0170.01-0.30
Tampere University of Technology70.0170.01-0.30
MBnet Networking Inc.70.0180.01-12.76
Kommunedata70.0170.01-0.30 srl70.0180.01-12.76
Internet Solutions70.0190.02-22.45
IPrimus USA70.0100.00N/A
FUN Kommunikationssysteme GmbH70.0170.01-0.30

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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