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 2018 Count	January 2018 %	December 2017 Count	December 2017 %	Growth %
GoDaddy.com, Inc.	803,842	18.77	806,655	1.2f	145.99
COMODO CA Limited	748,870	17.49	741,639	1.2f	149.25
DigiCert	514,168	12.01	6,797,962	1.2f	-81.33
GeoTrust Inc.	427,512	9.98	456,617	1.2f	131.11
GlobalSign nv-sa	324,438	7.58	330,794	1.2f	142.10
Let's Encrypt	290,912	6.79	288,415	1.2f	148.98
Symantec Corporation	123,349	2.88	131,015	1.2f	132.40
Gandi	100,999	2.36	73,916	1.2f	237.29
cPanel, Inc.	81,465	1.90	80,235	1.2f	150.63
Unknown	77,013	1.80	74,403	1.2f	155.51
thawte, Inc.	72,297	1.69	77,556	1.2f	130.11
Amazon	66,152	1.55	65,322	1.2f	149.98
Starfield Technologies, Inc.	57,423	1.34	57,619	1.2f	146.01
Microsoft Corporation	44,038	1.03	43,013	1.2f	152.73
Google Inc	37,987	0.89	36,859	1.2f	154.40
Internet2	30,859	0.72	30,960	1.2f	146.04
TERENA	28,476	0.67	28,438	1.2f	147.18
Entrust, Inc.	25,188	0.59	24,924	1.2f	149.46
Parallels	21,229	0.50	21,964	1.2f	138.59
Trustwave Holdings, Inc.	19,568	0.46	19,617	1.2f	146.23
Unizeto Technologies S.A.	19,442	0.45	19,220	1.2f	149.70
Network Solutions L.L.C.	18,166	0.42	18,354	1.2f	144.32
none	18,135	0.42	17,892	1.2f	150.20
SomeOrganization	17,722	0.41	17,464	1.2f	150.49
ispgateway	17,582	0.41	17,383	1.2f	149.67
SecureCore	12,305	0.29	11,802	1.2f	157.37
DreamHost	11,473	0.27	11,297	1.2f	150.69
Odin	11,159	0.26	11,067	1.2f	148.90
QuoVadis Limited	10,302	0.24	10,232	1.2f	148.54
Plesk	9,210	0.22	8,587	1.2f	164.76
NN.RU	8,883	0.21	8,883	1.2f	146.85
Cybertrust Japan Co., Ltd.	8,707	0.20	8,606	1.2f	149.74
home.pl S.A.	8,311	0.19	8,143	1.2f	151.94
SSL.com	7,978	0.19	7,825	1.2f	151.67
StartCom Ltd.	7,731	0.18	8,434	1.2f	126.27
Hostpoint AG	6,687	0.16	6,550	1.2f	152.01
Internet Widgits Pty Ltd	6,615	0.15	6,500	1.2f	151.21
GeoTrust, Inc.	6,533	0.15	7,032	1.2f	129.33
Google Trust Services	5,300	0.12	5,244	1.2f	149.48
io.ua	4,804	0.11	4,717	1.2f	151.40
HydrantID (Avalanche Cloud Corporation)	4,592	0.11	4,875	1.2f	132.52
nazwa.pl sp. z o.o.	4,591	0.11	4,416	1.2f	156.63
CloudFlare, Inc.	3,759	0.09	3,713	1.2f	149.91
Corporation Service Company	3,527	0.08	3,832	1.2f	127.20
Comodo Limited	3,440	0.08	3,348	1.2f	153.63
SECOM Trust Systems CO.,LTD.	3,394	0.08	3,432	1.2f	144.11
Pizza-Taxi.de GmbH / CA	3,229	0.08	3,170	1.2f	151.44
Tangient	3,204	0.07	0	1.2f	N/A
Actalis S.p.A./03358520967	3,181	0.07	3,065	1.2f	156.19
KDDI Web Communications Inc.	3,138	0.07	3,117	1.2f	148.51
Trust Provider B.V.	3,068	0.07	3,165	1.2f	139.28
WebSupport, s.r.o.	2,753	0.06	2,740	1.2f	148.02
National Institute of Informatics	2,321	0.05	2,305	1.2f	148.56
Hosting Ukraine LLC	2,311	0.05	2,250	1.2f	153.54
Government of Korea	2,204	0.05	2,266	1.2f	140.09
Default Company Ltd	2,063	0.05	1,971	1.2f	158.37
Webhosting	1,963	0.05	1,880	1.2f	157.75
DOMENY.PL sp. z o.o	1,941	0.05	1,888	1.2f	153.78
WoSign CA Limited	1,933	0.05	1,979	1.2f	141.11
Thawte, Inc.	1,781	0.04	1,888	1.2f	132.86
TAIWAN-CA	1,763	0.04	1,790	1.2f	143.12
Verisign	1,757	0.04	1,839	1.2f	135.84
T-Systems International GmbH	1,701	0.04	1,722	1.2f	143.84
Nijimo, Inc.	1,590	0.04	1,425	1.2f	175.43
Japan Registry Services Co., Ltd.	1,521	0.04	1,473	1.2f	154.89
Rede Nacional de Ensino e Pesquisa - RNP	1,486	0.03	1,481	1.2f	147.68
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	1,410	0.03	1,392	1.2f	150.04
AlphaSSL	1,400	0.03	1,426	1.2f	142.35
KEYNECTIS	1,375	0.03	1,388	1.2f	144.54
SwissSign AG	1,362	0.03	1,291	1.2f	160.42
Equifax (Geotrust)	1,305	0.03	1,342	1.2f	140.04
NetLock Kft.	1,263	0.03	1,219	1.2f	155.76
EUNETIC GmbH	1,263	0.03	1,282	1.2f	143.19
Test Self SSL Company	1,214	0.03	1,196	1.2f	150.56
UIC	1,177	0.03	1,177	1.2f	146.85
WEDOS Internet, a.s.	1,163	0.03	1,142	1.2f	151.39
AC Camerfirma S.A.	1,161	0.03	1,104	1.2f	159.59
Dreamcommerce S.A.	1,125	0.03	1,094	1.2f	153.84
U.S. Government	1,059	0.02	1,066	1.2f	145.23
XX	971	0.02	955	1.2f	150.98
SH	970	0.02	936	1.2f	155.81
TrustAsia Technologies, Inc.	925	0.02	899	1.2f	153.99
Globe Hosting, Inc.	834	0.02	877	1.2f	134.74
AffirmTrust	793	0.02	730	1.2f	168.15
Buypass AS-983163327	759	0.02	745	1.2f	151.49
Apache HTTP Server	729	0.02	714	1.2f	152.03
Internet Invest	684	0.02	666	1.2f	153.52
TBS INTERNET	680	0.02	684	1.2f	145.40
Intermediate Certificate	650	0.02	673	1.2f	138.41
www.sprinthost.ru	636	0.01	611	1.2f	156.95
CAcert Inc.	636	0.01	653	1.2f	140.42
Zimbra Collaboration Server	568	0.01	595	1.2f	135.65
Beijing Knownsec Information Technology Co., Ltd	536	0.01	522	1.2f	153.47
FNMT-RCM	527	0.01	606	1.2f	114.67
Root CA	503	0.01	521	1.2f	138.32
PCextreme BV	488	0.01	477	1.2f	152.54
ICP-Brasil	462	0.01	474	1.2f	140.60
Trend Micro Inc	461	0.01	513	1.2f	121.83
OVH	459	0.01	458	1.2f	147.39
CertCenter AG	446	0.01	439	1.2f	150.78

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.