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You are viewing an outdated report.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


    
Certificate Authority Market Share Report
February 1st, 2006

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 January 2006
Count
January 2006
%
December 2005
Count
December 2005
%
Growth
%
Verisign72,74430.3473,62030.43-0.32
Equifax (Geotrust)45,30418.8945,36918.760.73
Thawte37,37215.5937,91815.68-0.58
Comodo Limited19,5418.1520,4088.44-3.41
Starfield Technologies, Inc.5,6802.375,4982.274.22
Unknown4,0561.694,0381.671.33
Entrust.net3,8101.593,8341.580.25
SomeOrganization2,9851.243,1371.30-4.01
AddTrust AB2,2390.931,5960.6641.52
The USERTRUST Network2,0500.852,3370.97-11.51
Snake Oil, Ltd2,0090.842,0340.84-0.36
SWsoft, Inc.1,9710.821,9280.803.13
ChainedSSL1,8680.781,8730.770.61
U.S. Government1,4120.591,4200.590.31
XRamp Security Services Inc1,3270.551,2250.519.28
DigiCert Inc.1,0990.461,0360.437.01
TC TrustCenter for Security in Data Networks GmbH7510.317670.32-1.23
IPS Certification Authority s.l.7370.317470.31-0.47
Network Solutions L.L.C.7270.306380.2614.95
GlobalSign nv-sa6050.256090.250.21
Root CA5600.235330.225.99
FreeSSL3670.154100.17-9.70
Betrusted Japan Co.,Ltd.3580.153520.152.60
Deutsche Telekom AG2940.122950.120.54
Plesk, Inc.2890.122980.12-2.17
GTE Corporation2310.102410.10-3.31
ispgateway2240.092270.09-0.46
Ipswitch,Inc.1890.082100.09-9.21
Positive Software Corporation1600.071130.0542.84
Akamai1600.071570.062.81
TDC1570.071610.07-1.63
Kubota Systems Inc.1540.061540.060.88
Comodo Japan Inc.1540.061510.062.88
Apache HTTP Server1480.061510.06-1.13
Positive Software1350.061480.06-7.98
Plesk Inc.1260.051340.06-5.15
Internet Widgits Pty Ltd1120.051200.05-5.85
Unizeto Sp. z o.o.1030.041020.041.87
OCC1010.041010.040.88
NetLock Halozatbiztonsagi Kft.1000.041020.04-1.10
Digital Signature Trust Co.920.04930.04-0.21
Thawte Certification880.04920.04-3.51
IceWarp Software850.04920.04-6.80
GlobalSign Inc850.04730.0317.46
ICS_TREE820.03830.03-0.34
Firstserver, Inc.770.03800.03-2.91
RM710.03680.035.33
CRU710.03690.033.80
CNRS680.03680.030.88
Equifax Secure Inc660.03670.03-0.63
Trusted Secure Certificate Authority610.03570.027.96
Azero610.03620.03-0.75
United Network Communications Co., Ltd.590.02590.020.88
ICP-Brasil590.02550.028.21
XYZ Corporation580.02530.0210.39
NTT Communications Corporation560.02550.022.71
Japan Certification Services, Inc.560.02560.020.88
Sun Microsystems Inc550.02590.02-5.96
StartCom Ltd.530.02490.029.11
MULTICERT-CA530.02520.022.82
UniCERT Brasil Certificadora510.02530.02-2.93
WebMoney Transfer500.02490.022.94
My Company Ltd490.02500.02-1.14
Stunnel Developers Ltd460.02530.02-12.45
FNMT440.02430.023.22
Hostgator420.02400.025.92
BlueHost.Com420.02330.0128.39
SCNC410.02410.020.88
DFN-CERT Services GmbH410.02410.020.88
SuSE Linux Web Server380.02380.020.88
S1 Corporation370.02350.016.64
University of Maryland360.02370.02-1.85
Temp Certificate!360.02370.02-1.85
Beocity360.02360.010.88
TAIWAN-CA.COM350.01290.0121.75
Etisalat340.01350.01-2.00
Stalker Software, Inc.330.01310.017.39
Carnegie Mellon University330.01330.010.88
CETI320.01320.010.88
Advanced Extranet Server320.01310.014.13
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH320.01330.01-2.18
Webmin Software310.01310.010.88
Pro Futuro S.A.310.01340.01-8.02
Baltimore Technologies Japan Co.,Ltd.310.01490.02-36.18
Audkenni hf.310.01320.01-2.27
cv. Candi Internet300.01300.010.88
WEBMASTERS.COM290.01290.010.88
SSL290.01290.010.88
IceWarp Ltd.290.01290.010.88
domainsofnote.com280.01280.010.88
University of Helsinki280.01290.01-2.60
Sonera280.0100.00N/A
Prvni certifikacni autorita a.s.280.01280.010.88
University of Washington270.01270.010.88
Massachusetts Institute of Technology270.01290.01-6.08
E-Telbank Sp. z o.o.270.0100.00N/A
Default Web Site270.01290.01-6.08
CFC270.01270.010.88
Postecom S.p.A.260.0100.00N/A
IT Bureau of Hainan Province260.01260.010.88

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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