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	May 2023 Count	May 2023 %	April 2023 Count	April 2023 %	Growth %
Let's Encrypt	1,059,057	30.66	1,193,311	33.08	-7.31
Sectigo Limited	436,848	12.65	450,942	12.50	1.17
DigiCert	283,740	8.21	296,139	8.21	0.06
GlobalSign nv-sa	217,065	6.28	220,010	6.10	3.04
Unknown	154,203	4.46	150,976	4.19	6.67
Amazon	140,974	4.08	134,505	3.73	9.46
DigiCert, Inc.	116,443	3.37	115,406	3.20	5.37
Google Trust Services LLC	111,369	3.22	111,118	3.08	4.67
GoDaddy.com, Inc.	96,434	2.79	97,269	2.70	3.54
cPanel, Inc.	66,823	1.93	68,214	1.89	2.31
Plesk	64,421	1.87	64,776	1.80	3.86
SomeOrganization	58,964	1.71	57,506	1.59	7.08
Cloudflare, Inc.	50,335	1.46	50,257	1.39	4.60
ddos-guard	40,888	1.18	40,996	1.14	4.16
Unizeto Technologies S.A.	25,786	0.75	26,420	0.73	1.93
Internet Widgits Pty Ltd	25,672	0.74	25,657	0.71	4.50
TrustAsia Technologies, Inc.	25,119	0.73	24,866	0.69	5.50
GEANT Vereniging	25,068	0.73	25,048	0.69	4.52
SH	21,461	0.62	21,399	0.59	4.74
GoGetSSL	21,245	0.62	21,590	0.60	2.77
COMODO CA Limited	18,963	0.55	19,071	0.53	3.84
Soluciones Corporativas IP, SL	17,705	0.51	17,657	0.49	4.72
Japan Registry Services Co., Ltd.	17,467	0.51	17,537	0.49	4.02
Gandi	15,626	0.45	15,677	0.43	4.10
Apache HTTP Server	15,514	0.45	15,524	0.43	4.37
Starfield Technologies, Inc.	15,279	0.44	15,191	0.42	5.04
Internet2	14,659	0.42	14,778	0.41	3.60
Parallels	13,214	0.38	13,320	0.37	3.60
ZeroSSL	12,049	0.35	12,092	0.34	4.06
Odin	10,465	0.30	10,559	0.29	3.51
Beijing Knownsec Information Technology Co., Ltd	10,426	0.30	10,226	0.28	6.48
Microsoft Corporation	9,954	0.29	9,947	0.28	4.51
Default Company Ltd	9,663	0.28	9,892	0.27	2.02
Entrust, Inc.	8,764	0.25	9,604	0.27	-4.70
SECOM Trust Systems CO.,LTD.	8,543	0.25	8,601	0.24	3.73
XX	7,124	0.21	7,039	0.20	5.70
dhosting.pl Sp. z o.o.	6,450	0.19	6,402	0.18	5.22
KAGOYA-JAPAN	5,932	0.17	5,969	0.17	3.79
Unspecified	5,432	0.16	5,401	0.15	5.04
Cybertrust Japan Co., Ltd.	4,765	0.14	4,644	0.13	7.16
WoTrus CA Limited	4,746	0.14	3,914	0.11	26.64
Mirohost	4,681	0.14	4,699	0.13	4.04
none	4,570	0.13	4,647	0.13	2.71
Beijing Xinchacha Credit Management Co., Ltd.	4,534	0.13	4,462	0.12	6.12
FASTVPS	4,358	0.13	4,344	0.12	4.77
Baidu, Inc.	4,290	0.12	0	0.00	N/A
GeoTrust Inc.	3,809	0.11	3,851	0.11	3.30
CloudFlare, Inc.	3,752	0.11	4,128	0.11	-5.08
Alpiro s.r.o.	3,731	0.11	3,864	0.11	0.84
Webgarden	3,665	0.11	3,661	0.10	4.55
Network Solutions L.L.C.	3,631	0.11	3,679	0.10	3.07
DivMulTech LLC	3,570	0.10	3,568	0.10	4.49
Hotel.cz	3,310	0.10	3,308	0.09	4.50
DOMENY.PL sp. z o.o	3,227	0.09	3,208	0.09	5.05
My Company Ltd	3,179	0.09	3,167	0.09	4.83
SSL Server	3,146	0.09	3,146	0.09	4.44
home.pl S.A.	3,074	0.09	3,027	0.08	6.06
Guardian Inc.	3,028	0.09	3,028	0.08	4.44
SSL Corporation	2,946	0.09	2,952	0.08	4.22
Digital Element	2,687	0.08	2,689	0.07	4.36
Buypass AS-983163327	2,544	0.07	2,529	0.07	5.06
FASTPANEL	2,445	0.07	2,472	0.07	3.30
SmugMug	2,316	0.07	2,311	0.06	4.66
cndns	2,254	0.07	2,242	0.06	5.00
Acme Co	2,209	0.06	2,206	0.06	4.58
TAIWAN-CA	2,194	0.06	2,186	0.06	4.82
CentOS Web Panel	2,076	0.06	2,076	0.06	4.44
Dattatec.com	2,028	0.06	2,003	0.06	5.74
testexample	1,948	0.06	1,822	0.05	11.66
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	1,849	0.05	1,973	0.05	-2.13
Comodo Japan, Inc.	1,808	0.05	1,557	0.04	21.27
Kloxo Next Generation	1,795	0.05	1,765	0.05	6.21
Rede Nacional de Ensino e Pesquisa - RNP	1,772	0.05	1,800	0.05	2.81
Actalis S.p.A.	1,724	0.05	1,844	0.05	-2.36
The Trustico Group Ltd	1,657	0.05	1,651	0.05	4.82
ZONER Software, a.s.	1,522	0.04	1,535	0.04	3.55
Skok.CZ	1,326	0.04	1,328	0.04	4.28
Trust Provider B.V.	1,214	0.04	1,430	0.04	-11.34
RunCloud Sdn. Bhd.	1,088	0.03	1,075	0.03	5.70
GeoTrust, Inc.	1,079	0.03	1,084	0.03	3.95
MyCompany	1,060	0.03	1,090	0.03	1.56
Corporation Service Company	966	0.03	1,010	0.03	-0.11
TERENA	965	0.03	973	0.03	3.58
Trustwave Holdings, Inc.	961	0.03	956	0.03	4.98
N/A	937	0.03	943	0.03	3.77
Hoster	920	0.03	911	0.03	5.47
SecureCore	918	0.03	926	0.03	3.53
Zhejiang Huluwa Digital Certification Co., Ltd.	898	0.03	940	0.03	-0.23
NetLock Kft.	891	0.03	873	0.02	6.59
GTranslate	875	0.03	864	0.02	5.77
E-TUGRA EBG BILISIM TEKNOLOJILERI VE HIZMETLERI ANONIM SIRKETI	855	0.02	860	0.02	3.83
Traffic	826	0.02	774	0.02	11.45
Brainy	794	0.02	855	0.02	-3.01
zzidc.com	766	0.02	761	0.02	5.12
BiziNet Pty Ltd	764	0.02	762	0.02	4.71
sslTrus	755	0.02	736	0.02	7.13
QuoVadis Limited	748	0.02	753	0.02	3.74
StartCom Ltd.	747	0.02	761	0.02	2.51
China Financial Certification Authority	718	0.02	0	0.00	N/A
Bitnami	710	0.02	727	0.02	1.99

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.