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You are viewing an outdated report.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


    
Certificate Authority Market Share Report
October 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 September 2006
Count
September 2006
%
August 2006
Count
August 2006
%
Growth
%
Verisign76,89626.5975,89127.12-1.95
Equifax (Geotrust)61,74821.3559,32221.200.73
Thawte40,99814.1840,17814.36-1.25
Comodo Limited16,0285.5416,6135.94-6.64
Starfield Technologies, Inc.11,3803.9410,3473.706.43
The USERTRUST Network6,7992.355,6222.0117.03
Unknown6,2832.175,8272.084.34
AddTrust AB5,6631.965,4431.940.68
Entrust.net4,3631.514,3571.56-3.10
DigiCert Inc.3,8281.323,3761.219.73
SomeOrganization3,1711.103,1251.12-1.81
SWsoft, Inc.2,6710.922,5240.902.41
Network Solutions L.L.C.2,3470.812,1200.767.13
Snake Oil, Ltd1,9920.691,9720.70-2.25
XRamp Security Services Inc1,7890.621,7100.611.24
U.S. Government1,4810.511,4690.52-2.44
IPS Certification Authority s.l.9320.328760.312.96
TC TrustCenter for Security in Data Networks GmbH8930.318660.31-0.21
Root CA8330.297890.282.17
GlobalSign nv-sa7930.277620.270.71
Positive Software Corporation6540.235860.218.00
Betrusted Japan Co.,Ltd.5620.195350.191.65
ispgateway3360.123150.113.22
SECOM Trust.net3150.112050.0748.70
Comodo Japan Inc.2910.102670.105.47
FreeSSL2590.092520.09-0.54
GTE Corporation2430.082370.08-0.78
ChainedSSL2040.072210.08-10.67
Akamai1960.072060.07-7.93
Firstserver, Inc.1910.071760.065.02
Plesk, Inc.1900.071930.07-4.73
Kubota Systems Inc.1890.071830.07-0.06
T-Systems Enterprise Services GmbH1850.061570.0614.03
TDC1830.061780.06-0.51
OCC1790.061610.067.59
Cybertrust1770.061400.0522.35
DigiCert Inc1620.06600.02161.28
Secure Business Services, Inc.1540.051220.0422.15
Deutsche Telekom AG1540.051740.06-14.35
Apache HTTP Server1530.051450.052.11
Positive Software1380.051380.05-3.23
CAcert Inc.1380.051230.048.57
NetLock Halozatbiztonsagi Kft.1290.041240.040.67
Ipswitch,Inc.1280.041350.05-8.25
Unizeto Sp. z o.o.1230.041130.045.33
Trusted Secure Certificate Authority1160.041130.04-0.66
Digi-Sign Limited1130.041000.049.35
ICS_TREE1120.041050.043.22
RM1110.04990.048.50
StartCom Ltd.1100.04980.048.62
Internet Widgits Pty Ltd1090.041180.04-10.61
GlobalSign Inc1020.04980.040.72
NTT Communications Corporation1000.03940.032.95
Plesk Inc.960.031020.04-8.92
Digital Signature Trust Co.940.03900.031.07
BlueHost.Com910.03800.0310.08
CRU900.03900.03-3.23
Your Name Webhosting870.03800.035.24
CNRS860.03810.032.74
ICP-Brasil780.03770.03-1.97
Thawte Certification760.03720.032.15
IceWarp Software740.03780.03-8.19
MULTICERT-CA650.02610.023.12
FNMT650.02620.021.45
TAIWAN-CA.COM640.02630.02-1.69
Japan Certification Services, Inc.640.02640.02-3.23
Default Web Site630.02610.02-0.06
United Network Communications Co., Ltd.590.02590.02-3.23
Sun Microsystems Inc570.02540.022.15
XYZ Corporation560.02570.02-4.93
WebMoney Transfer560.02540.020.35
Temp Certificate!550.02550.02-3.23
Stunnel Developers Ltd540.02550.02-4.99
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH540.02490.026.64
Sonera510.02460.027.29
New Dream Network, LLC.490.02410.0115.65
My Company Ltd490.02510.02-7.02
Hostgator470.02470.02-3.23
Equifax Secure Inc470.02480.02-5.25
InterWorx440.02360.0118.27
IceWarp Ltd.440.02380.0112.05
hosting430.01350.0118.89
CsideNet430.01410.011.49
"PositiveSoftwareCorporation"430.01410.011.49
Carnegie Mellon University420.01400.011.61
SuSE Linux Web Server410.01360.0110.21
S1 Corporation390.01400.01-5.65
Prvni certifikacni autorita a.s.390.01340.0111.00
IT Bureau of Hainan Province380.01360.012.15
Stalker Software, Inc.370.01390.01-8.19
Cisco Systems, Inc.360.01350.01-0.46
University of Washington350.01350.01-3.23
University of Maryland350.01340.01-0.38
Unicert Brasil Certificadora350.0100.00N/A
Etisalat350.01340.01-0.38
CFC350.01340.01-0.38
Beocity350.01350.01-3.23
E-Telbank Sp. z o.o.340.0100.00N/A
Massachusetts Institute of Technology330.0100.00N/A
Linkopings universitet330.0100.00N/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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