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 doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	April 2025 Count	April 2025 %	March 2025 Count	March 2025 %	Growth %
Let's Encrypt	4,181,475	38.08	4,099,404	37.86	0.58
Sectigo Limited	1,879,611	17.12	1,863,263	17.21	-0.53
DigiCert	891,029	8.11	883,134	8.16	-0.52
Unknown	667,642	6.08	654,438	6.04	0.59
GlobalSign nv-sa	498,656	4.54	493,746	4.56	-0.42
Amazon	205,060	1.87	209,288	1.93	-3.39
GoDaddy.com, Inc.	193,078	1.76	193,121	1.78	-1.42
CloudSecure Corporation	182,338	1.66	179,957	1.66	-0.09
Google Trust Services	177,576	1.62	174,982	1.62	0.07
Unizeto Technologies S.A.	121,574	1.11	108,133	1.00	10.86
New Dream Network LLC dba Dreamhost	116,845	1.06	115,842	1.07	-0.54
Gehirn Inc.	112,806	1.03	111,959	1.03	-0.65
Starfield Technologies, Inc.	101,351	0.92	109,050	1.01	-8.36
Plesk	99,657	0.91	99,617	0.92	-1.36
SomeOrganization	66,240	0.60	65,602	0.61	-0.44
Microsoft Corporation	60,945	0.56	59,714	0.55	0.64
ddos-guard	60,342	0.55	59,209	0.55	0.49
ZeroSSL	54,390	0.50	51,007	0.47	5.14
GEANT Vereniging	53,199	0.48	56,000	0.52	-6.33
ispgateway	50,376	0.46	50,417	0.47	-1.48
Internet Widgits Pty Ltd	46,608	0.42	44,467	0.41	3.35
home.pl S.A.	43,968	0.40	45,372	0.42	-4.45
cPanel, Inc.	42,855	0.39	43,309	0.40	-2.43
Actalis S.p.A.	41,993	0.38	41,004	0.38	0.98
Japan Registry Services Co., Ltd.	37,553	0.34	37,012	0.34	0.04
DigiCert, Inc.	36,484	0.33	33,186	0.31	8.40
none	35,625	0.32	36,552	0.34	-3.90
GoGetSSL	35,116	0.32	34,782	0.32	-0.45
TrustAsia Technologies, Inc.	35,112	0.32	44,215	0.41	-21.70
Acme Co	32,356	0.29	30,451	0.28	4.77
Internet2	31,014	0.28	31,804	0.29	-3.85
Unspecified	25,992	0.24	25,032	0.23	2.38
Default Company Ltd	25,486	0.23	25,017	0.23	0.45
SH	22,490	0.20	22,447	0.21	-1.21
Soluciones Corporativas IP, SL	20,207	0.18	20,363	0.19	-2.15
AfterMarket.pl	19,928	0.18	21,416	0.20	-8.25
COMODO CA Limited	18,100	0.16	19,397	0.18	-7.99
nazwa.pl Sp. z o.o.	17,797	0.16	17,691	0.16	-0.81
Gandi	17,609	0.16	19,297	0.18	-10.02
World4You Internet Services GmbH	16,145	0.15	15,960	0.15	-0.25
Apache HTTP Server	14,715	0.13	14,727	0.14	-1.48
WoTrus CA Limited	14,592	0.13	13,525	0.12	6.38
Beijing Knownsec Information Technology Co., Ltd	14,529	0.13	13,329	0.12	7.48
FASTPANEL	14,129	0.13	13,333	0.12	4.49
Test Self SSL Company	13,958	0.13	13,885	0.13	-0.88
SECOM Trust Systems CO.,LTD.	13,557	0.12	13,887	0.13	-3.74
Beijing Xinchacha Credit Management Co., Ltd.	12,962	0.12	12,201	0.11	4.75
Parallels	12,819	0.12	13,520	0.12	-6.51
Cybertrust Japan Co., Ltd.	11,901	0.11	11,765	0.11	-0.26
Basekit Ltd	11,453	0.10	11,444	0.11	-1.32
Entrust, Inc.	10,396	0.09	11,522	0.11	-11.03
Odin	10,238	0.09	10,436	0.10	-3.27
SSL Corporation	10,160	0.09	9,148	0.08	9.51
KAGOYA-JAPAN	10,005	0.09	10,058	0.09	-1.92
cyber_Folks S.A.	9,772	0.09	9,624	0.09	0.12
sslTrus	9,507	0.09	5,548	0.05	68.97
The Trustico Group Ltd	9,373	0.09	9,173	0.08	0.75
XX	9,265	0.08	9,384	0.09	-2.65
o2switch	8,930	0.08	8,672	0.08	1.54
DirectAdmin Self-Signed	8,875	0.08	9,006	0.08	-2.83
www.sprinthost.ru	8,359	0.08	8,301	0.08	-0.71
dhosting.pl Sp. z o.o.	7,928	0.07	7,858	0.07	-0.52
Zhejiang Huluwa Digital Certification Co., Ltd.	7,644	0.07	5,569	0.05	35.34
LiteSpeedCommunity	7,220	0.07	6,849	0.06	3.94
CloudFlare, Inc.	6,994	0.06	6,977	0.06	-1.16
cPanel, LLC	6,981	0.06	7,371	0.07	-6.61
Organization	6,977	0.06	6,923	0.06	-0.63
Gandi SAS	6,368	0.06	4,940	0.05	27.11
FASTVPS	5,975	0.05	6,015	0.06	-2.05
Hestia Control Panel	5,971	0.05	5,676	0.05	3.73
My Company Ltd	5,896	0.05	5,372	0.05	8.22
GeoTrust Inc.	5,825	0.05	5,872	0.05	-2.19
Network Solutions L.L.C.	5,670	0.05	5,653	0.05	-1.10
TAIWAN-CA	5,572	0.05	5,374	0.05	2.24
Hellenic Academic and Research Institutions CA	5,529	0.05	2,348	0.02	132.19
Alpiro s.r.o.	5,336	0.05	5,361	0.05	-1.86
GMO CLOUD K.K.	5,332	0.05	5,166	0.05	1.77
Certainly	5,170	0.05	4,814	0.04	5.90
Trust Provider B.V.	5,076	0.05	4,904	0.05	2.06
ovipanel	4,962	0.05	4,876	0.05	0.34
Certera	4,762	0.04	4,677	0.04	0.40
WEDOS Internet, a.s.	4,486	0.04	0	0.00	N/A
DivMulTech LLC	3,592	0.03	3,592	0.03	-1.40
PerfectSSL	3,561	0.03	3,537	0.03	-0.73
Webador	3,493	0.03	3,361	0.03	2.48
Nijimo K.K.	3,407	0.03	3,029	0.03	10.91
CentOS Web Panel	3,372	0.03	3,369	0.03	-1.31
DNSPod, Inc.	3,362	0.03	3,289	0.03	0.79
x	3,326	0.03	3,323	0.03	-1.31
ACME	3,191	0.03	3,018	0.03	4.26
Guardian Inc.	3,139	0.03	3,142	0.03	-1.49
SSL Server	3,132	0.03	3,134	0.03	-1.46
Deutsche Telekom Security GmbH	3,033	0.03	3,004	0.03	-0.44
Rede Nacional de Ensino e Pesquisa - RNP	2,936	0.03	2,997	0.03	-3.40
Dattatec.com	2,931	0.03	2,882	0.03	0.28
WEDOS GLOBAL	2,609	0.02	2,487	0.02	3.44
Skok.CZ	2,607	0.02	2,595	0.02	-0.94
ZONER Software, a.s.	2,515	0.02	2,581	0.02	-3.92
Comodo Japan, Inc.	2,503	0.02	0	0.00	N/A
SpinupWP	2,473	0.02	2,420	0.02	0.76

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.