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	December 2017 Count	December 2017 %	November 2017 Count	November 2017 %	Growth %
DigiCert	6,797,962	64.32	0	0.00	N/A
GoDaddy.com, Inc.	806,655	7.63	0	0.00	N/A
COMODO CA Limited	741,639	7.02	0	0.00	N/A
GeoTrust Inc.	456,617	4.32	0	0.00	N/A
GlobalSign nv-sa	330,794	3.13	0	0.00	N/A
Let's Encrypt	288,415	2.73	0	0.00	N/A
Symantec Corporation	131,015	1.24	0	0.00	N/A
cPanel, Inc.	80,235	0.76	0	0.00	N/A
thawte, Inc.	77,556	0.73	0	0.00	N/A
Unknown	74,403	0.70	0	0.00	N/A
Gandi	73,916	0.70	0	0.00	N/A
Amazon	65,322	0.62	0	0.00	N/A
Starfield Technologies, Inc.	57,619	0.55	0	0.00	N/A
Microsoft Corporation	43,013	0.41	0	0.00	N/A
Google Inc	36,859	0.35	0	0.00	N/A
Internet2	30,960	0.29	0	0.00	N/A
TERENA	28,438	0.27	0	0.00	N/A
Entrust, Inc.	24,924	0.24	0	0.00	N/A
Parallels	21,964	0.21	0	0.00	N/A
Trustwave Holdings, Inc.	19,617	0.19	0	0.00	N/A
Unizeto Technologies S.A.	19,220	0.18	0	0.00	N/A
Network Solutions L.L.C.	18,354	0.17	0	0.00	N/A
none	17,892	0.17	0	0.00	N/A
SomeOrganization	17,464	0.17	0	0.00	N/A
ispgateway	17,383	0.16	0	0.00	N/A
SecureCore	11,802	0.11	0	0.00	N/A
DreamHost	11,297	0.11	0	0.00	N/A
Odin	11,067	0.10	0	0.00	N/A
QuoVadis Limited	10,232	0.10	0	0.00	N/A
NN.RU	8,883	0.08	0	0.00	N/A
Cybertrust Japan Co., Ltd.	8,606	0.08	0	0.00	N/A
Plesk	8,587	0.08	0	0.00	N/A
StartCom Ltd.	8,434	0.08	0	0.00	N/A
home.pl S.A.	8,143	0.08	0	0.00	N/A
SSL.com	7,825	0.07	0	0.00	N/A
GeoTrust, Inc.	7,032	0.07	0	0.00	N/A
Hostpoint AG	6,550	0.06	0	0.00	N/A
Internet Widgits Pty Ltd	6,500	0.06	0	0.00	N/A
Google Trust Services	5,244	0.05	0	0.00	N/A
HydrantID (Avalanche Cloud Corporation)	4,875	0.05	0	0.00	N/A
io.ua	4,717	0.04	0	0.00	N/A
nazwa.pl sp. z o.o.	4,416	0.04	0	0.00	N/A
Corporation Service Company	3,832	0.04	0	0.00	N/A
CloudFlare, Inc.	3,713	0.04	0	0.00	N/A
SECOM Trust Systems CO.,LTD.	3,432	0.03	0	0.00	N/A
Comodo Limited	3,348	0.03	0	0.00	N/A
Pizza-Taxi.de GmbH / CA	3,170	0.03	0	0.00	N/A
Trust Provider B.V.	3,165	0.03	0	0.00	N/A
KDDI Web Communications Inc.	3,117	0.03	0	0.00	N/A
Actalis S.p.A./03358520967	3,065	0.03	0	0.00	N/A
WebSupport, s.r.o.	2,740	0.03	0	0.00	N/A
National Institute of Informatics	2,305	0.02	0	0.00	N/A
Government of Korea	2,266	0.02	0	0.00	N/A
Hosting Ukraine LLC	2,250	0.02	0	0.00	N/A
WoSign CA Limited	1,979	0.02	0	0.00	N/A
Default Company Ltd	1,971	0.02	0	0.00	N/A
Thawte, Inc.	1,888	0.02	0	0.00	N/A
DOMENY.PL sp. z o.o	1,888	0.02	0	0.00	N/A
Webhosting	1,880	0.02	0	0.00	N/A
Verisign	1,839	0.02	0	0.00	N/A
TAIWAN-CA	1,790	0.02	0	0.00	N/A
T-Systems International GmbH	1,722	0.02	0	0.00	N/A
Rede Nacional de Ensino e Pesquisa - RNP	1,481	0.01	0	0.00	N/A
Japan Registry Services Co., Ltd.	1,473	0.01	0	0.00	N/A
AlphaSSL	1,426	0.01	0	0.00	N/A
Nijimo, Inc.	1,425	0.01	0	0.00	N/A
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	1,392	0.01	0	0.00	N/A
KEYNECTIS	1,388	0.01	0	0.00	N/A
Equifax (Geotrust)	1,342	0.01	0	0.00	N/A
SwissSign AG	1,291	0.01	0	0.00	N/A
EUNETIC GmbH	1,282	0.01	0	0.00	N/A
NetLock Kft.	1,219	0.01	0	0.00	N/A
Test Self SSL Company	1,196	0.01	0	0.00	N/A
UIC	1,177	0.01	0	0.00	N/A
WEDOS Internet, a.s.	1,142	0.01	0	0.00	N/A
AC Camerfirma S.A.	1,104	0.01	0	0.00	N/A
Dreamcommerce S.A.	1,094	0.01	0	0.00	N/A
U.S. Government	1,066	0.01	0	0.00	N/A
XX	955	0.01	0	0.00	N/A
SH	936	0.01	0	0.00	N/A
TrustAsia Technologies, Inc.	899	0.01	0	0.00	N/A
Globe Hosting, Inc.	877	0.01	0	0.00	N/A
Buypass AS-983163327	745	0.01	0	0.00	N/A
AffirmTrust	730	0.01	0	0.00	N/A
Apache HTTP Server	714	0.01	0	0.00	N/A
TBS INTERNET	684	0.01	0	0.00	N/A
Intermediate Certificate	673	0.01	0	0.00	N/A
Internet Invest	666	0.01	0	0.00	N/A
CAcert Inc.	653	0.01	0	0.00	N/A
www.sprinthost.ru	611	0.01	0	0.00	N/A
FNMT-RCM	606	0.01	0	0.00	N/A
Zimbra Collaboration Server	595	0.01	0	0.00	N/A
Beijing Knownsec Information Technology Co., Ltd	522	0.00	0	0.00	N/A
Root CA	521	0.00	0	0.00	N/A
Trend Micro Inc	513	0.00	0	0.00	N/A
PCextreme BV	477	0.00	0	0.00	N/A
ICP-Brasil	474	0.00	0	0.00	N/A
OVH	458	0.00	0	0.00	N/A
Acme Co	449	0.00	0	0.00	N/A
CertCenter AG	439	0.00	0	0.00	N/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.