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	November 2021 Count	November 2021 %	October 2021 Count	October 2021 %	Growth %
Let's Encrypt	1,572,362	33.36	1,544,604	28.45	17.24
Sectigo Limited	630,427	13.38	1,233,161	22.72	-41.12
DigiCert	536,320	11.38	577,921	10.65	6.88
GlobalSign nv-sa	257,115	5.45	257,185	4.74	15.14
Unknown	176,675	3.75	195,445	3.60	4.11
GoDaddy.com, Inc.	164,291	3.49	167,957	3.09	12.66
Amazon	156,904	3.33	163,998	3.02	10.19
cPanel, Inc.	137,807	2.92	140,369	2.59	13.07
Google Trust Services LLC	97,333	2.07	96,484	1.78	16.18
Plesk	81,370	1.73	81,874	1.51	14.46
SomeOrganization	72,758	1.54	75,858	1.40	10.46
Cloudflare, Inc.	52,073	1.10	52,532	0.97	14.16
Unizeto Technologies S.A.	45,897	0.97	46,335	0.85	14.08
COMODO CA Limited	44,480	0.94	54,865	1.01	-6.63
Actalis S.p.A.	44,149	0.94	47,674	0.88	6.65
Parallels	26,855	0.57	27,052	0.50	14.33
TrustAsia Technologies, Inc.	25,708	0.55	24,868	0.46	19.06
Starfield Technologies, Inc.	24,886	0.53	59,673	1.10	-51.97
GEANT Vereniging	24,337	0.52	23,980	0.44	16.88
GoGetSSL	23,350	0.50	23,217	0.43	15.83
Internet2	21,357	0.45	22,050	0.41	11.55
Odin	21,032	0.45	21,347	0.39	13.47
ddos-guard	20,185	0.43	18,693	0.34	24.36
Gandi	19,626	0.42	20,890	0.38	8.20
Japan Registry Services Co., Ltd.	19,058	0.40	19,253	0.35	14.00
SH	18,314	0.39	17,224	0.32	22.46
Soluciones Corporativas IP, SL	16,515	0.35	16,396	0.30	16.01
Apache HTTP Server	15,945	0.34	15,927	0.29	15.30
Entrust, Inc.	14,284	0.30	13,895	0.26	18.39
SECOM Trust Systems CO.,LTD.	13,997	0.30	13,941	0.26	15.63
Test Self SSL Company	12,610	0.27	12,386	0.23	17.25
ZeroSSL	11,081	0.24	9,673	0.18	31.93
TERENA	10,716	0.23	11,500	0.21	7.32
Default Company Ltd	10,348	0.22	10,171	0.19	17.17
Microsoft Corporation	10,290	0.22	10,287	0.19	15.20
none	8,989	0.19	9,600	0.18	7.84
CloudFlare, Inc.	8,778	0.19	8,684	0.16	16.42
FASTVPS	7,557	0.16	7,485	0.14	16.28
GeoTrust Inc.	7,097	0.15	8,402	0.15	-2.72
Internet Widgits Pty Ltd	6,693	0.14	11,958	0.22	-35.54
KAGOYA-JAPAN	6,671	0.14	6,778	0.12	13.35
Corporation Service Company	6,576	0.14	6,662	0.12	13.68
XX	6,498	0.14	6,474	0.12	15.60
Beijing Knownsec Information Technology Co., Ltd	6,343	0.13	6,200	0.11	17.83
Network Solutions L.L.C.	5,734	0.12	5,759	0.11	14.67
DOMENY.PL sp. z o.o	5,731	0.12	5,735	0.11	15.09
WoTrus CA Limited	5,697	0.12	5,544	0.10	18.35
QuoVadis Limited	5,574	0.12	6,141	0.11	4.54
dhosting.pl Sp. z o.o.	5,554	0.12	5,243	0.10	22.00
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	5,483	0.12	5,518	0.10	14.44
home.pl S.A.	5,300	0.11	4,829	0.09	26.40
Unspecified	5,065	0.11	4,948	0.09	17.89
Trust Provider B.V.	4,951	0.11	5,632	0.10	1.24
Cybertrust Japan Co., Ltd.	4,888	0.10	15,945	0.29	-64.69
Mirohost	4,771	0.10	4,689	0.09	17.18
testexample	3,907	0.08	3,119	0.06	44.27
Buypass AS-983163327	3,115	0.07	3,123	0.06	14.88
SSL Server	3,101	0.07	3,070	0.06	16.33
Guardian Inc.	3,046	0.06	3,045	0.06	15.21
SSL Corporation	2,954	0.06	2,830	0.05	20.22
DivMulTech LLC	2,909	0.06	2,742	0.05	22.18
Webgarden	2,705	0.06	2,639	0.05	18.05
Digital Element	2,690	0.06	2,690	0.05	15.17
Alpiro s.r.o.	2,598	0.06	1,733	0.03	72.66
The Trustico Group Ltd	2,522	0.05	1,753	0.03	65.69
CentOS Web Panel	2,483	0.05	2,672	0.05	7.02
My Company Ltd	2,370	0.05	2,286	0.04	19.40
SmugMug	2,183	0.05	2,159	0.04	16.45
TAIWAN-CA	2,145	0.05	2,052	0.04	20.39
GeoTrust, Inc.	2,091	0.04	2,226	0.04	8.19
Bitrix	1,948	0.04	2,022	0.04	10.96
nazwa.pl sp. z o.o.	1,770	0.04	2,221	0.04	-8.22
cndns	1,663	0.04	1,694	0.03	13.06
MyCompany	1,623	0.03	1,674	0.03	11.66
StartCom Ltd.	1,538	0.03	1,620	0.03	9.34
Beijing Xinchacha Credit Management Co., Ltd.	1,487	0.03	1,225	0.02	39.80
SecureCore	1,486	0.03	1,521	0.03	12.52
ZONER Software, a.s.	1,475	0.03	1,455	0.03	16.75
OVH	1,469	0.03	1,483	0.03	14.08
Trustwave Holdings, Inc.	1,462	0.03	1,478	0.03	13.92
Skok.CZ	1,439	0.03	1,416	0.03	17.04
Dattatec.com	1,422	0.03	1,369	0.03	19.63
Comodo Japan, Inc.	1,367	0.03	1,344	0.02	17.14
N/A	1,366	0.03	1,382	0.03	13.84
thawte, Inc.	1,215	0.03	1,519	0.03	-7.88
NetLock Kft.	1,180	0.03	1,226	0.02	10.85
SwissSign AG	1,177	0.02	899	0.02	50.78
Bitnami	1,158	0.02	1,181	0.02	12.93
CA	1,132	0.02	1,126	0.02	15.78
Acme Co	1,130	0.02	1,112	0.02	17.03
WEDOS Internet, a.s.	1,118	0.02	0	0.00	N/A
Yandex LLC	1,028	0.02	1,005	0.02	17.81
EUNETIC GmbH	954	0.02	995	0.02	10.42
Symantec Corporation	927	0.02	959	0.02	11.33
FNMT-RCM	873	0.02	853	0.02	17.87
FASTPANEL	869	0.02	776	0.01	28.97
SWsoft, Inc.	856	0.02	856	0.02	15.17
Comodo Limited	784	0.02	812	0.01	11.20
QuoVadis Trustlink B.V.	757	0.02	966	0.02	-9.75
KAGOYA Japan Ltd	721	0.02	734	0.01	13.13

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.