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	December 2020 Count	December 2020 %	November 2020 Count	November 2020 %	Growth %
Let's Encrypt	2,792,469	23.87	2,703,248	23.56	1.30
Sectigo Limited	2,174,505	18.59	2,098,679	18.29	1.60
DigiCert	1,546,562	13.22	1,534,105	13.37	-1.14
cPanel, Inc.	693,374	5.93	671,452	5.85	1.26
GlobalSign nv-sa	589,054	5.04	595,364	5.19	-2.98
COMODO CA Limited	431,553	3.69	471,305	4.11	-10.21
Unknown	430,674	3.68	419,785	3.66	0.61
GoDaddy.com, Inc.	399,988	3.42	396,937	3.46	-1.18
Starfield Technologies, Inc.	235,403	2.01	231,232	2.02	-0.17
Amazon	226,922	1.94	219,750	1.92	1.26
Cloudflare, Inc.	186,242	1.59	177,974	1.55	2.62
SecureCore	116,885	1.00	113,534	0.99	0.96
Plesk	103,172	0.88	102,694	0.90	-1.48
Gehirn Inc.	90,825	0.78	88,513	0.77	0.62
SomeOrganization	89,520	0.77	86,617	0.76	1.35
Unizeto Technologies S.A.	87,526	0.75	85,570	0.75	0.30
Google Trust Services	86,968	0.74	85,837	0.75	-0.65
none	85,994	0.74	84,003	0.73	0.39
ispgateway	68,587	0.59	68,563	0.60	-1.90
DreamHost	62,895	0.54	59,751	0.52	3.22
Microsoft Corporation	58,644	0.50	57,811	0.50	-0.53
Internet2	54,406	0.47	54,305	0.47	-1.76
GoGetSSL	44,320	0.38	32,286	0.28	34.61
home.pl S.A.	41,896	0.36	40,873	0.36	0.52
Actalis S.p.A.	40,012	0.34	38,996	0.34	0.62
TERENA	39,052	0.33	40,681	0.35	-5.86
Parallels	37,432	0.32	38,154	0.33	-3.79
Odin	37,148	0.32	40,072	0.35	-9.09
Gandi	36,339	0.31	35,572	0.31	0.18
Entrust, Inc.	36,333	0.31	36,274	0.32	-1.78
Trustwave Holdings, Inc.	30,799	0.26	30,904	0.27	-2.27
Webhosting	29,986	0.26	29,552	0.26	-0.50
TrustAsia Technologies, Inc.	28,434	0.24	25,482	0.22	9.42
GeoTrust Inc.	24,522	0.21	25,097	0.22	-4.18
Japan Registry Services Co., Ltd.	22,637	0.19	22,153	0.19	0.20
GEANT Vereniging	21,114	0.18	18,844	0.16	9.87
Cybertrust Japan Co., Ltd.	19,991	0.17	21,634	0.19	-9.39
Internet Widgits Pty Ltd	17,271	0.15	17,192	0.15	-1.49
Apache HTTP Server	16,360	0.14	16,355	0.14	-1.91
QuoVadis Limited	16,279	0.14	17,044	0.15	-6.34
Acme Co	15,603	0.13	15,431	0.13	-0.85
SECOM Trust Systems CO.,LTD.	15,508	0.13	15,284	0.13	-0.50
Network Solutions L.L.C.	15,202	0.13	14,951	0.13	-0.29
WebSupport, s.r.o.	15,104	0.13	14,922	0.13	-0.74
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	14,976	0.13	14,852	0.13	-1.12
Soluciones Corporativas IP, SL	13,689	0.12	13,388	0.12	0.27
Default Company Ltd	12,683	0.11	12,229	0.11	1.70
Trust Provider B.V.	12,664	0.11	12,589	0.11	-1.35
SH	12,371	0.11	11,896	0.10	1.98
ddos-guard	12,136	0.10	11,959	0.10	-0.49
World4You Internet Services GmbH	11,554	0.10	11,147	0.10	1.64
WEDOS Internet, a.s.	11,536	0.10	11,327	0.10	-0.13
Corporation Service Company	9,416	0.08	9,385	0.08	-1.61
DOMENY.PL sp. z o.o	9,352	0.08	9,157	0.08	0.15
Test Self SSL Company	8,750	0.07	8,484	0.07	1.14
KAGOYA-JAPAN	8,332	0.07	8,085	0.07	1.06
ZeroSSL	7,742	0.07	9,771	0.09	-22.30
www.sprinthost.ru	7,164	0.06	6,928	0.06	1.40
The Trustico Group Ltd	6,381	0.05	6,257	0.05	0.01
Unspecified	6,296	0.05	5,475	0.05	12.77
Caddy Self-Signed	5,765	0.05	5,791	0.05	-2.38
XX	5,553	0.05	5,304	0.05	2.67
CloudFlare, Inc.	5,532	0.05	5,895	0.05	-7.98
Dreamcommerce S.A.	5,056	0.04	4,974	0.04	-0.32
o2switch	4,909	0.04	4,555	0.04	5.68
Basekit Ltd	4,708	0.04	4,044	0.04	14.16
TAIWAN-CA	4,688	0.04	4,581	0.04	0.35
T-Systems International GmbH	4,459	0.04	4,427	0.04	-1.23
Mirohost	4,291	0.04	4,266	0.04	-1.36
SSL Corporation	4,227	0.04	4,078	0.04	1.64
dhosting.pl Sp. z o.o.	4,197	0.04	4,074	0.04	1.02
National Institute of Informatics	4,042	0.03	4,059	0.04	-2.35
SwissSign AG	3,940	0.03	3,899	0.03	-0.91
Buypass AS-983163327	3,840	0.03	3,775	0.03	-0.25
nazwa.pl sp. z o.o.	3,762	0.03	3,643	0.03	1.27
GMO CLOUD K.K.	3,715	0.03	3,581	0.03	1.73
thawte, Inc.	3,704	0.03	3,884	0.03	-6.48
GeoTrust, Inc.	3,656	0.03	3,714	0.03	-3.47
HydrantID (Avalanche Cloud Corporation)	3,623	0.03	3,332	0.03	6.63
NetLock Kft.	3,422	0.03	3,188	0.03	5.26
DealerInspire	3,368	0.03	3,234	0.03	2.13
CentOS Web Panel	3,252	0.03	3,199	0.03	-0.31
QuoVadis Trustlink B.V.	3,050	0.03	2,283	0.02	31.01
SSL Server	2,840	0.02	2,812	0.02	-0.96
WoTrus CA Limited	2,827	0.02	2,942	0.03	-5.77
Guardian Inc.	2,787	0.02	2,716	0.02	0.63
testexample	2,774	0.02	2,495	0.02	9.03
Beijing Knownsec Information Technology Co., Ltd	2,747	0.02	2,404	0.02	12.05
Bitrix	2,731	0.02	2,635	0.02	1.63
Digital Element	2,685	0.02	2,685	0.02	-1.94
ONEsolution s.r.o.	2,654	0.02	2,573	0.02	1.15
unaone	2,463	0.02	2,477	0.02	-2.49
FASTVPS	2,351	0.02	2,271	0.02	1.52
MyCompany	2,350	0.02	2,309	0.02	-0.20
Comodo Limited	2,340	0.02	2,423	0.02	-5.30
Fasthosts Internet Limited	2,315	0.02	2,256	0.02	0.63
DivMulTech LLC	2,267	0.02	2,238	0.02	-0.67
StartCom Ltd.	2,205	0.02	2,312	0.02	-6.48
EUNETIC GmbH	2,200	0.02	0	0.00	N/A
N/A	2,123	0.02	2,993	0.03	-30.44

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.