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	October 2023 Count	October 2023 %	September 2023 Count	September 2023 %	Growth %
Let's Encrypt	997,651	31.04	1,007,543	30.95	0.30
Sectigo Limited	394,664	12.28	400,559	12.30	-0.19
DigiCert	271,876	8.46	289,378	8.89	-4.83
GlobalSign nv-sa	219,314	6.82	220,215	6.76	0.88
Unknown	205,688	6.40	206,609	6.35	0.84
Amazon	139,957	4.35	139,422	4.28	1.68
GoDaddy.com, Inc.	79,622	2.48	85,942	2.64	-6.15
DigiCert, Inc.	62,049	1.93	66,603	2.05	-5.63
Plesk	60,328	1.88	60,919	1.87	0.31
cPanel, Inc.	57,186	1.78	58,731	1.80	-1.37
SomeOrganization	55,792	1.74	56,518	1.74	-0.01
Cloudflare, Inc.	50,000	1.56	49,533	1.52	2.25
ddos-guard	44,078	1.37	43,550	1.34	2.52
Google Trust Services LLC	42,724	1.33	42,454	1.30	1.94
Unizeto Technologies S.A.	32,388	1.01	25,789	0.79	27.22
Internet Widgits Pty Ltd	25,793	0.80	25,739	0.79	1.51
GEANT Vereniging	23,760	0.74	23,989	0.74	0.33
TrustAsia Technologies, Inc.	23,413	0.73	23,575	0.72	0.60
SH	22,134	0.69	22,095	0.68	1.47
GoGetSSL	20,453	0.64	20,583	0.63	0.66
Soluciones Corporativas IP, SL	18,240	0.57	18,226	0.56	1.37
Japan Registry Services Co., Ltd.	17,308	0.54	16,116	0.50	8.79
COMODO CA Limited	15,787	0.49	16,388	0.50	-2.42
Gandi	15,468	0.48	15,678	0.48	-0.06
Apache HTTP Server	15,367	0.48	15,398	0.47	1.09
Starfield Technologies, Inc.	13,665	0.43	13,335	0.41	3.80
ZeroSSL	12,776	0.40	12,517	0.38	3.39
Internet2	12,655	0.39	12,849	0.39	-0.23
Beijing Knownsec Information Technology Co., Ltd	11,404	0.35	9,983	0.31	15.71
Parallels	11,289	0.35	11,729	0.36	-2.50
Microsoft Corporation	10,217	0.32	10,150	0.31	1.96
Default Company Ltd	9,987	0.31	10,017	0.31	0.99
Odin	9,367	0.29	9,570	0.29	-0.85
SECOM Trust Systems CO.,LTD.	8,033	0.25	8,123	0.25	0.17
XX	7,262	0.23	7,545	0.23	-2.50
Entrust, Inc.	7,084	0.22	7,286	0.22	-1.51
dhosting.pl Sp. z o.o.	6,761	0.21	6,771	0.21	1.15
Unspecified	5,711	0.18	5,644	0.17	2.50
KAGOYA-JAPAN	5,542	0.17	5,568	0.17	0.82
Beijing Xinchacha Credit Management Co., Ltd.	5,425	0.17	5,284	0.16	4.00
Baidu, Inc.	5,205	0.16	5,113	0.16	3.12
Cybertrust Japan Co., Ltd.	4,882	0.15	4,928	0.15	0.35
Mirohost	4,671	0.15	4,658	0.14	1.58
FASTVPS	4,569	0.14	4,540	0.14	1.94
none	3,841	0.12	4,004	0.12	-2.83
CloudFlare, Inc.	3,623	0.11	3,714	0.11	-1.19
My Company Ltd	3,594	0.11	3,548	0.11	2.61
DivMulTech LLC	3,587	0.11	3,587	0.11	1.30
Alpiro s.r.o.	3,575	0.11	3,595	0.11	0.73
WoTrus CA Limited	3,375	0.11	3,390	0.10	0.85
Hotel.cz	3,293	0.10	3,317	0.10	0.56
Network Solutions L.L.C.	3,252	0.10	3,338	0.10	-1.31
SSL Server	3,136	0.10	3,136	0.10	1.30
GeoTrust Inc.	3,049	0.09	3,119	0.10	-0.98
Guardian Inc.	2,993	0.09	2,999	0.09	1.09
Buypass AS-983163327	2,823	0.09	2,804	0.09	1.98
SSL Corporation	2,819	0.09	2,843	0.09	0.44
Digital Element	2,685	0.08	2,686	0.08	1.26
FASTPANEL	2,651	0.08	2,643	0.08	1.60
TAIWAN-CA	2,302	0.07	2,322	0.07	0.42
Dattatec.com	2,194	0.07	2,177	0.07	2.09
home.pl S.A.	2,166	0.07	2,319	0.07	-5.39
CentOS Web Panel	1,945	0.06	1,954	0.06	0.83
Acme Co	1,920	0.06	1,905	0.06	2.09
Comodo Japan, Inc.	1,904	0.06	1,882	0.06	2.48
Zhejiang Huluwa Digital Certification Co., Ltd.	1,798	0.06	1,902	0.06	-4.24
Rede Nacional de Ensino e Pesquisa - RNP	1,626	0.05	1,703	0.05	-3.28
ZONER Software, a.s.	1,584	0.05	1,575	0.05	1.87
The Trustico Group Ltd	1,461	0.05	1,475	0.05	0.33
Kloxo Next Generation	1,452	0.05	1,570	0.05	-6.32
Actalis S.p.A.	1,400	0.04	1,359	0.04	4.35
DBAPPSecurity Limited	1,347	0.04	1,336	0.04	2.13
Skok.CZ	1,313	0.04	1,314	0.04	1.22
MyCompany	1,298	0.04	1,302	0.04	0.98
RunCloud Sdn. Bhd.	1,247	0.04	1,238	0.04	2.03
Trust Provider B.V.	1,207	0.04	1,198	0.04	2.06
GeoTrust, Inc.	1,009	0.03	1,018	0.03	0.40
Traffic	995	0.03	989	0.03	1.91
DNSPod, Inc.	975	0.03	684	0.02	44.39
Hoster	970	0.03	978	0.03	0.47
TERENA	896	0.03	898	0.03	1.07
N/A	894	0.03	892	0.03	1.52
SecureCore	892	0.03	904	0.03	-0.05
GTranslate	874	0.03	861	0.03	2.83
sslTrus	863	0.03	815	0.03	7.26
Bitrix	847	0.03	871	0.03	-1.50
China Financial Certification Authority	798	0.02	807	0.02	0.17
zzidc.com	790	0.02	789	0.02	1.42
Brainy	788	0.02	768	0.02	3.93
Trustwave Holdings, Inc.	785	0.02	817	0.03	-2.67
BiziNet Pty Ltd	768	0.02	768	0.02	1.30
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	659	0.02	795	0.02	-16.03
Bitnami	659	0.02	666	0.02	0.23
StartCom Ltd.	642	0.02	655	0.02	-0.71
FNMT-RCM	626	0.02	614	0.02	3.28
QuoVadis Limited	619	0.02	628	0.02	-0.16
NetLock Kft.	614	0.02	630	0.02	-1.28
Corporation Service Company	603	0.02	600	0.02	1.80
Southbridge LTD	588	0.02	0	0.00	N/A
thawte, Inc.	567	0.02	590	0.02	-2.65

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.