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 2024 Count	April 2024 %	March 2024 Count	March 2024 %	Growth %
Let's Encrypt	2,777,478	32.98	2,491,600	32.31	2.09
Sectigo Limited	1,418,816	16.85	1,273,366	16.51	2.04
DigiCert	749,266	8.90	704,921	9.14	-2.66
Unknown	456,469	5.42	433,183	5.62	-3.50
GlobalSign nv-sa	404,029	4.80	383,890	4.98	-3.62
cPanel, Inc.	305,951	3.63	296,306	3.84	-5.44
GoDaddy.com, Inc.	195,216	2.32	179,568	2.33	-0.44
Amazon	180,937	2.15	174,708	2.27	-5.16
Cloudflare, Inc.	156,078	1.85	154,258	2.00	-7.34
SecureCore	119,657	1.42	103,039	1.34	6.35
Starfield Technologies, Inc.	118,040	1.40	104,055	1.35	3.89
Plesk	87,462	1.04	83,289	1.08	-3.83
Unizeto Technologies S.A.	81,700	0.97	71,254	0.92	5.00
New Dream Network LLC dba Dreamhost	80,449	0.96	68,998	0.89	6.78
Gehirn Inc.	75,965	0.90	65,523	0.85	6.17
SomeOrganization	65,083	0.77	63,640	0.83	-6.34
GEANT Vereniging	50,277	0.60	46,770	0.61	-1.55
ddos-guard	50,037	0.59	49,086	0.64	-6.65
TrustAsia Technologies, Inc.	41,670	0.49	35,126	0.46	8.64
none	40,160	0.48	35,383	0.46	3.94
Microsoft Corporation	38,213	0.45	37,522	0.49	-6.73
ispgateway	37,142	0.44	32,179	0.42	5.70
Internet Widgits Pty Ltd	35,659	0.42	34,692	0.45	-5.87
ZeroSSL	33,106	0.39	30,199	0.39	0.39
GoGetSSL	30,953	0.37	27,512	0.36	3.03
Japan Registry Services Co., Ltd.	29,957	0.36	28,302	0.37	-3.07
Internet2	28,321	0.34	26,421	0.34	-1.84
home.pl S.A.	27,296	0.32	24,129	0.31	3.60
DigiCert, Inc.	25,473	0.30	26,356	0.34	-11.49
Google Trust Services LLC	24,615	0.29	19,251	0.25	17.10
Actalis S.p.A.	24,326	0.29	20,740	0.27	7.41
Default Company Ltd	22,912	0.27	20,578	0.27	1.97
Gandi	22,666	0.27	21,630	0.28	-4.03
SH	22,137	0.26	21,988	0.29	-7.80
COMODO CA Limited	21,799	0.26	20,777	0.27	-3.92
Acme Co	21,389	0.25	19,462	0.25	0.65
Soluciones Corporativas IP, SL	20,144	0.24	19,626	0.25	-6.00
Entrust, Inc.	16,478	0.20	15,506	0.20	-2.68
AfterMarket.pl	16,225	0.19	14,568	0.19	2.00
Apache HTTP Server	15,816	0.19	15,759	0.20	-8.09
Parallels	15,801	0.19	15,001	0.19	-3.54
SECOM Trust Systems CO.,LTD.	14,793	0.18	14,215	0.18	-4.70
Unspecified	14,722	0.17	13,463	0.17	0.14
nazwa.pl sp. z o.o.	13,608	0.16	11,623	0.15	7.22
Beijing Knownsec Information Technology Co., Ltd	12,573	0.15	12,675	0.16	-9.16
Odin	11,793	0.14	11,542	0.15	-6.43
World4You Internet Services GmbH	10,167	0.12	8,325	0.11	11.84
Cybertrust Japan Co., Ltd.	9,752	0.12	9,059	0.12	-1.42
Beijing Xinchacha Credit Management Co., Ltd.	9,099	0.11	8,496	0.11	-1.92
Test Self SSL Company	9,036	0.11	7,729	0.10	7.07
KAGOYA-JAPAN	9,034	0.11	8,607	0.11	-3.88
XX	8,360	0.10	8,216	0.11	-6.82
Alpiro s.r.o.	8,355	0.10	7,758	0.10	-1.37
FASTPANEL	7,185	0.09	6,749	0.09	-2.51
dhosting.pl Sp. z o.o.	7,170	0.09	7,062	0.09	-7.02
Basekit Ltd	7,084	0.08	5,889	0.08	10.16
GeoTrust Inc.	5,919	0.07	5,518	0.07	-1.77
www.sprinthost.ru	5,739	0.07	4,881	0.06	7.68
WoTrus CA Limited	5,711	0.07	5,426	0.07	-3.61
Baidu, Inc.	5,606	0.07	5,564	0.07	-7.73
The Trustico Group Ltd	5,495	0.07	4,967	0.06	1.31
Network Solutions L.L.C.	5,352	0.06	5,034	0.07	-2.64
SSL Corporation	5,164	0.06	4,774	0.06	-0.94
CloudFlare, Inc.	5,092	0.06	4,963	0.06	-6.04
TAIWAN-CA	5,064	0.06	4,624	0.06	0.29
FASTVPS	4,791	0.06	4,887	0.06	-10.22
Trust Provider B.V.	4,492	0.05	4,596	0.06	-10.49
Certainly	4,477	0.05	3,956	0.05	3.64
WEDOS Internet, a.s.	4,398	0.05	5,085	0.07	-20.79
My Company Ltd	4,289	0.05	4,133	0.05	-4.96
DivMulTech LLC	3,590	0.04	3,589	0.05	-8.40
Microsoft	3,538	0.04	0	0.00	N/A
Rede Nacional de Ensino e Pesquisa - RNP	3,481	0.04	2,915	0.04	9.36
CentOS Web Panel	3,232	0.04	2,905	0.04	1.89
GMO CLOUD K.K.	3,180	0.04	2,737	0.04	6.40
SSL Server	3,145	0.04	3,144	0.04	-8.39
Guardian Inc.	2,918	0.03	2,936	0.04	-8.98
sslTrus	2,760	0.03	2,232	0.03	13.24
Zhejiang Huluwa Digital Certification Co., Ltd.	2,720	0.03	3,106	0.04	-19.80
Dreamcommerce S.A.	2,693	0.03	2,551	0.03	-3.32
Hestia Control Panel	2,476	0.03	2,211	0.03	2.55
ZONER Software, a.s.	2,376	0.03	2,241	0.03	-2.90
Organization	2,376	0.03	2,532	0.03	-14.06
Dattatec.com	2,367	0.03	2,331	0.03	-7.01
Deutsche Telekom Security GmbH	2,305	0.03	2,054	0.03	2.77
x	2,270	0.03	2,011	0.03	3.37
Buypass AS-983163327	2,264	0.03	2,247	0.03	-7.73
Comodo Japan, Inc.	2,126	0.03	2,070	0.03	-5.94
Skok.CZ	2,110	0.03	1,961	0.03	-1.46
cyber_Folks S.A.	1,908	0.02	1,608	0.02	8.66
Bitrix	1,856	0.02	1,709	0.02	-0.54
Webador	1,843	0.02	1,623	0.02	3.99
DNSPod, Inc.	1,837	0.02	1,647	0.02	2.14
WEDOS GLOBAL	1,753	0.02	0	0.00	N/A
LiteSpeedCommunity	1,741	0.02	0	0.00	N/A
MyCompany	1,572	0.02	1,545	0.02	-6.82
QuoVadis Limited	1,551	0.02	1,487	0.02	-4.48
SpinupWP	1,549	0.02	1,384	0.02	2.50
o2switch	1,536	0.02	0	0.00	N/A
Greenhost	1,525	0.02	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.