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You are viewing an outdated report. The latest version of this report was published on June 1st, 2024


    
Certificate Authority Market Share Report
November 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 October 2005
Count
October 2005
%
September 2005
Count
September 2005
%
Growth
%
Verisign72,41331.8872,19432.13-0.77
Equifax (Geotrust)40,10717.6640,06317.83-0.97
Thawte36,39716.0236,05116.04-0.12
Comodo Limited20,2478.9120,0828.94-0.26
Starfield Technologies, Inc.4,3861.933,9381.7510.18
Entrust.net3,4821.533,4181.520.78
Unknown3,4591.523,2471.445.38
SomeOrganization3,0001.322,9681.32-0.01
The USERTRUST Network2,5661.132,6681.19-4.86
Snake Oil, Ltd2,0400.902,0310.90-0.64
SWsoft, Inc.1,7290.761,6400.734.29
ChainedSSL1,5190.671,3400.6012.14
U.S. Government1,3990.621,3990.62-1.07
XRamp Security Services Inc1,1290.501,1130.500.35
DigiCert Inc.8330.377790.355.78
TC TrustCenter for Security in Data Networks GmbH7300.327190.320.44
IPS Certification Authority s.l.6820.306710.300.55
GlobalSign nv-sa5520.245320.242.64
FreeSSL4720.216150.27-24.08
Root CA4620.204240.197.79
Network Solutions L.L.C.3990.183110.1426.92
Plesk, Inc.3110.143200.14-3.86
Betrusted Japan Co.,Ltd.3010.132770.127.50
Deutsche Telekom AG2830.122850.13-1.77
GTE Corporation2510.112550.11-2.63
AddTrust AB2500.11250.01889.26
ispgateway2230.102130.093.57
Ipswitch,Inc.1960.092140.10-9.39
TDC1550.071500.072.22
Kubota Systems Inc.1500.071500.07-1.07
Positive Software1450.061380.063.94
Apache HTTP Server1420.061400.060.34
Plesk Inc.1410.061400.06-0.37
Akamai1280.061240.062.12
Comodo Japan Inc.1160.05990.0415.91
Internet Widgits Pty Ltd1150.051100.053.42
Unizeto Sp. z o.o.960.04920.043.23
NetLock Halozatbiztonsagi Kft.960.04930.042.12
Thawte Certification950.04960.04-2.10
OCC930.04890.043.37
IceWarp Software910.041010.04-10.87
Digital Signature Trust Co.860.04910.04-6.51
ICS_TREE770.03680.0312.02
Equifax Secure Inc700.03720.03-3.82
Azero630.03610.032.17
CNRS620.03580.035.75
United Network Communications Co., Ltd.590.03590.03-1.07
RM590.03550.026.12
CsideNet580.03570.030.66
CRU580.03560.022.46
Firstserver, Inc.560.02450.0223.11
XYZ Corporation550.02530.022.66
Sun Microsystems Inc540.02510.024.75
Japan Certification Services, Inc.540.02520.022.73
GlobalSign Inc540.02430.0224.23
ICP-Brasil530.02540.02-2.91
Stunnel Developers Ltd500.02500.02-1.07
Positive Software Corporation500.02310.0159.56
Baltimore Technologies Japan Co.,Ltd.480.02620.03-23.41
MULTICERT-CA470.02440.025.67
WebMoney Transfer460.02460.02-1.07
NTT Communications Corporation460.02450.021.12
UniCERT Brasil Certificadora450.02410.028.58
My Company Ltd420.02460.02-9.68
Trusted Secure Certificate Authority410.02330.0122.91
SCNC410.02410.02-1.07
Beocity380.02380.02-1.07
Stalker Software, Inc.360.02380.02-6.28
University of Maryland350.02340.021.84
FNMT350.02380.02-8.88
SuSE Linux Web Server340.01310.018.50
Hostgator340.01320.015.11
Temp Certificate!330.01300.018.82
DFN-CERT Services GmbH330.01310.015.31
StartCom Ltd.320.01310.012.12
Etisalat320.01340.02-6.89
Carnegie Mellon University320.01300.015.52
CETI320.01330.01-4.07
Audkenni hf.310.01330.01-7.07
Advanced Extranet Server310.01350.02-12.38
cv. Candi Internet300.01250.0118.71
S1 Corporation300.01260.0114.15
A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH300.01290.012.34
Webmin Software290.01300.01-4.37
Pro Futuro S.A.290.01270.016.25
CFC290.01290.01-1.07
domainsofnote.com280.01280.01-1.07
University of Helsinki280.01280.01-1.07
IceWarp Ltd.280.01330.01-16.06
Franke & Partner260.01260.01-1.07
NeoNova B.V.250.01260.01-4.88
INFN250.0100.00N/A
Default Web Site250.0100.00N/A
Brno University of Technology250.01250.01-1.07
websitewelcome.com240.0100.00N/A
XCOM240.0100.00N/A
Sun Cobalt240.01250.01-5.03
Prvni certifikacni autorita a.s.240.01240.01-1.07
Massachusetts Institute of Technology240.01260.01-8.68
E-Telbank Sp. z o.o.240.0100.00N/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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