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You are viewing an outdated report.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
May 1st, 2005

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 April 2005
Count
April 2005
%
March 2005
Count
March 2005
%
Growth
%
Verisign73,51933.3773,45733.85-1.41
Thawte38,30617.3938,15817.58-1.11
Equifax (Geotrust)36,62816.6335,51016.361.61
Comodo Limited18,5188.4117,9718.281.51
The USERTRUST Network3,4351.563,4091.57-0.74
Entrust.net3,2361.473,1791.460.28
SomeOrganization3,1181.423,1151.44-1.40
Unknown2,7231.242,5341.175.86
Starfield Technologies, Inc.2,3791.082,0550.9514.04
Snake Oil, Ltd2,1630.982,1771.00-2.12
FreeSSL1,7790.811,7000.783.09
SWsoft, Inc.1,4350.651,3660.633.49
U.S. Government1,3690.621,3900.64-2.98
XRamp Security Services Inc8970.418670.401.92
TC TrustCenter for Security in Data Networks GmbH6910.316630.312.67
IPS Certification Authority s.l.6850.316810.31-0.91
DigiCert Inc.4890.224260.2013.08
GlobalSign nv-sa4540.214690.22-4.64
Plesk, Inc.3800.174080.19-8.25
Root CA2920.132680.127.33
Deutsche Telekom AG2810.132820.13-1.84
Ipswitch,Inc.2460.112320.114.45
ispgateway2060.092060.09-1.49
Plesk Inc.1880.091900.09-2.53
TDC1550.071530.07-0.20
Baltimore Technologies Japan Co.,Ltd.1470.071570.07-7.76
Kubota Systems Inc.1410.061390.06-0.07
Your Name Webhosting1360.061330.060.73
Thawte Certification1190.051280.06-8.42
GTE Corporation1130.051170.05-4.86
Apache HTTP Server1100.051070.051.27
Betrusted Japan Co.,Ltd.1090.05790.0435.92
IceWarp Software1080.051070.05-0.57
Positive Software1060.051020.052.37
Digital Signature Trust Co.1020.05980.052.53
Akamai1000.05940.044.80
My Company Ltd930.04860.046.53
Internet Widgits Pty Ltd900.04890.04-0.38
NetLock Halozatbiztonsagi Kft.890.04910.04-3.66
Equifax Secure Inc850.04910.04-7.99
OCC800.04710.0311.00
Unizeto Sp. z o.o.730.03690.034.22
ICS_TREE660.03630.033.20
Stunnel Developers Ltd640.03660.03-4.48
XYZ Corporation630.03570.038.88
ChainedSSL620.03290.01110.61
Azero610.03580.033.60
United Network Communications Co., Ltd.600.03600.03-1.49
CsideNet530.02520.020.40
RM510.02490.022.53
WebMoney Transfer500.02460.027.08
Japan Certification Services, Inc.490.02440.029.70
CNRS480.02480.02-1.49
Advanced Extranet Server470.02470.02-1.49
ICP-Brasil460.02380.0219.25
Sun Microsystems Inc430.02420.020.86
CRU420.02440.02-5.97
Webmin Software410.02460.02-12.20
SCNC410.02400.020.97
MULTICERT-CA410.02440.02-8.21
TAIWAN-CA.COM Inc.400.02410.02-3.89
KICA400.02390.021.04
Sun Cobalt390.02380.021.10
Beocity390.02390.02-1.49
Stalker Software, Inc.380.02390.02-4.02
NTT Communications Corporation380.02340.0210.10
Comodo Japan Inc.370.02360.021.25
UniCERT Brasil Certificadora360.02320.0110.82
FNMT350.02330.024.48
CETI340.02330.021.49
Temp Certificate!320.01330.02-4.48
DFN-CERT Services GmbH310.01310.01-1.49
University of Maryland300.01310.01-4.67
Etisalat300.01300.01-1.49
Audkenni hf.300.01300.01-1.49
domainsofnote.com280.01280.01-1.49
cv. Candi Internet280.01250.0110.33
University of Helsinki280.01280.01-1.49
NeoNova B.V.280.01280.01-1.49
Massachusetts Institute of Technology280.01270.012.16
Firstserver, Inc.280.01240.0114.93
Carnegie Mellon University280.01280.01-1.49
Your Name270.01250.016.39
SuSE Linux Web Server270.01260.012.30
Pro Futuro S.A.270.01270.01-1.49
ORACLE DEMO CA260.01270.01-5.14
ISPAdmin260.01270.01-5.14
Franke & Partner260.01260.01-1.49
CFC260.01270.01-5.14
community musician250.01270.01-8.79
IceWarp Ltd.250.0100.00N/A
Hongkong Post250.01250.01-1.49
CESNET250.01230.017.08
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH250.01210.0117.27
Cardiff Schools240.01250.01-5.43
pair Networks230.01240.01-5.59
Usermin Webserver230.01210.017.89
Brno University of Technology230.01230.01-1.49
Technische Universitaet Chemnitz220.01220.01-1.49
Your Organization210.0100.00N/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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