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Certificate Authority Market Share Report
December 1st, 2011

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 November 2011
Count
November 2011
%
October 2011
Count
October 2011
%
Growth
%
GoDaddy.com, Inc.181,54419.77174,57319.391.96
Verisign90,4359.8590,13910.01-1.63
GeoTrust, Inc.89,9849.8084,6319.404.25
Equifax (Geotrust)66,4167.2368,9687.66-5.58
Thawte, Inc.47,3355.1545,9875.110.92
Comodo Limited38,5384.2039,8044.42-5.07
DigiCert36,8454.0135,8243.980.84
GeoTrust Inc.35,4863.8634,5923.840.58
COMODO CA Limited34,6233.7732,7273.633.73
Comodo CA Limited24,4962.6723,7052.631.32
Unknown23,4172.5522,9302.550.13
GlobalSign nv-sa20,5472.2419,8642.211.42
Thawte20,1672.2021,0782.34-6.19
Network Solutions L.L.C.19,8392.1619,8502.20-2.01
Starfield Technologies, Inc.17,1931.8716,9001.88-0.25
GlobalSign15,5831.7015,6061.73-2.10
Entrust, Inc.12,0701.3111,8381.31-0.03
TERENA8,4180.928,2450.920.10
SecureTrust Corporation7,3320.807,2260.80-0.51
StartCom Ltd.6,6320.726,3650.712.16
Alpha4,6410.514,7810.53-4.82
SomeOrganization4,6280.504,6300.51-2.00
Parallels4,4560.494,3300.480.90
Akamai Technologies Inc4,0540.443,9740.440.02
Internet23,3820.373,1090.356.66
Cybertrust Japan Co., Ltd.3,3290.363,2740.36-0.31
SECOM Trust Systems CO.,LTD.2,7360.302,7210.30-1.41
GeoTrust Inc2,5710.282,4790.281.69
AlphaSSL2,4310.262,0380.2316.95
CAcert Inc.2,1680.242,1250.240.03
thawte, Inc.2,1480.232,0970.230.43
SWsoft, Inc.2,0350.222,0530.23-2.81
Root CA1,8950.211,8780.21-1.07
Unizeto Technologies S.A.1,8520.201,8260.20-0.56
Servision Inc.1,7790.191,7650.20-1.17
Volusion, Inc.1,7010.191,4750.1613.07
Google Inc1,5490.171,4820.162.48
U.S. Government1,3710.151,3730.15-2.10
TC TrustCenter GmbH1,2660.141,2610.14-1.56
GTE Corporation1,1580.131,1270.130.74
Cybertrust Inc1,1100.121,0970.12-0.79
SECOM Trust.net1,0970.121,1020.12-2.40
QuoVadis Limited1,0670.121,0500.12-0.37
Register.com1,0490.111,0270.110.15
ispgateway1,0060.119850.110.14
Snake Oil, Ltd9880.119720.11-0.34
UIC9220.109180.10-1.53
ips Certification Authority9210.109230.10-2.17
Trusted Secure Certificate Authority8980.108880.10-0.85
GANDI SAS8730.108500.090.70
none8710.098530.090.12
Cybertrust8450.098750.10-5.31
Sun Microsystems Inc7740.087780.09-2.46
T-Systems International GmbH6760.076330.074.71
AusCERT6510.076360.070.36
Betrusted Japan Co., Ltd.6360.076610.07-5.66
EUNETIC GmbH6150.075970.071.00
National Institute of Informatics6110.076010.07-0.32
OVH SAS5650.065510.060.54
Government of Korea5500.065230.063.11
Secure Business Services, Inc.5450.065550.06-3.72
NetLock Halozatbiztonsagi Kft.5250.065180.06-0.63
Autistici/Inventati5150.064900.053.05
Globe Hosting, Inc.5100.064900.052.05
Parallels, Inc.4770.054920.05-4.94
SYS-CON Media4590.054300.054.66
Firstserver, Inc4510.054440.05-0.41
OCC3880.043790.040.38
WebSpace-Forum, Thomas Wendt3630.043300.047.85
FNMT3620.043600.04-1.41
WTF ALFA3550.043520.04-1.12
Apache HTTP Server3520.043540.04-2.51
TBS INTERNET3470.043430.04-0.81
Internet Widgits Pty Ltd3320.043250.040.16
CrossTrust3280.043120.033.08
ICP-Brasil3270.043280.04-2.25
RBC Hosting Center3230.043230.04-1.95
Sonera3220.043220.04-1.95
Zimbra Collaboration Suite2890.032780.031.93
TAIWAN-CA INC.2780.032510.038.59
OptimumSSL CA2530.032470.030.43
SonicWALL, Inc.2470.032450.03-1.15
XX2450.032430.03-1.15
TDC2300.032350.03-4.04
SiteGround LLC.2110.022150.02-3.78
Entrust.net2080.022140.02-4.70
TAIWAN-CA.COM Inc.2000.022150.02-8.79
Getronics PinkRoccade Nederland B.V.1930.021980.02-4.43
T-Systems Enterprise Services GmbH1740.022280.03-25.17
SwissSign AG1710.021600.024.79
Digi-Sign Limited1680.021670.02-1.37
Ministere education nationale (MENESR)1640.021680.02-4.29
HTTPS Management Certificate for SonicWALL (self-signed)1620.021520.024.50
WoSign, Inc.1590.021640.02-4.94
Wells Fargo1590.021550.020.58
InterWorx1590.021500.023.93
SGssl1550.021540.02-1.32
My Company Ltd1550.021460.024.09
Positive Software1510.021540.02-3.86
Universitaet Heidelberg1490.021450.020.75

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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