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	January 2021 Count	January 2021 %	December 2020 Count	December 2020 %	Growth %
Let's Encrypt	2,882,062	24.22	2,792,469	23.87	1.48
Sectigo Limited	2,285,142	19.21	2,174,505	18.59	3.33
DigiCert	1,561,802	13.13	1,546,562	13.22	-0.71
cPanel, Inc.	705,375	5.93	693,374	5.93	0.03
GlobalSign nv-sa	586,013	4.93	589,054	5.04	-2.18
Unknown	445,088	3.74	430,674	3.68	1.62
GoDaddy.com, Inc.	409,195	3.44	399,988	3.42	0.59
COMODO CA Limited	366,152	3.08	431,553	3.69	-16.58
Amazon	239,092	2.01	226,922	1.94	3.60
Starfield Technologies, Inc.	218,644	1.84	235,403	2.01	-8.68
Cloudflare, Inc.	191,631	1.61	186,242	1.59	1.17
SecureCore	119,853	1.01	116,885	1.00	0.82
Plesk	104,490	0.88	103,172	0.88	-0.42
Gehirn Inc.	92,692	0.78	90,825	0.78	0.35
SomeOrganization	91,118	0.77	89,520	0.77	0.08
Unizeto Technologies S.A.	88,162	0.74	87,526	0.75	-0.96
Google Trust Services	87,886	0.74	86,968	0.74	-0.64
none	87,359	0.73	85,994	0.74	-0.11
ispgateway	68,798	0.58	68,587	0.59	-1.37
DreamHost	65,714	0.55	62,895	0.54	2.73
Microsoft Corporation	59,579	0.50	58,644	0.50	-0.11
Internet2	54,147	0.46	54,406	0.47	-2.14
home.pl S.A.	42,799	0.36	41,896	0.36	0.44
Actalis S.p.A.	40,853	0.34	40,012	0.34	0.39
GoGetSSL	39,099	0.33	44,320	0.38	-13.26
Odin	37,487	0.32	37,148	0.32	-0.78
Entrust, Inc.	36,881	0.31	36,333	0.31	-0.19
Parallels	36,712	0.31	37,432	0.32	-3.57
Gandi	36,416	0.31	36,339	0.31	-1.47
TERENA	34,713	0.29	39,052	0.33	-12.60
Trustwave Holdings, Inc.	30,673	0.26	30,799	0.26	-2.08
Webhosting	30,419	0.26	29,986	0.26	-0.26
TrustAsia Technologies, Inc.	28,468	0.24	28,434	0.24	-1.56
GEANT Vereniging	25,824	0.22	21,114	0.18	20.26
GeoTrust Inc.	24,431	0.21	24,522	0.21	-2.04
Japan Registry Services Co., Ltd.	23,041	0.19	22,637	0.19	0.08
Cybertrust Japan Co., Ltd.	19,425	0.16	19,991	0.17	-4.46
Internet Widgits Pty Ltd	17,602	0.15	17,271	0.15	0.21
Acme Co	16,521	0.14	15,603	0.13	4.11
Apache HTTP Server	16,385	0.14	16,360	0.14	-1.53
SECOM Trust Systems CO.,LTD.	15,943	0.13	15,508	0.13	1.08
QuoVadis Limited	15,716	0.13	16,279	0.14	-5.08
Network Solutions L.L.C.	15,080	0.13	15,202	0.13	-2.46
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	15,013	0.13	14,976	0.13	-1.43
WebSupport, s.r.o.	14,967	0.13	15,104	0.13	-2.57
Soluciones Corporativas IP, SL	13,978	0.12	13,689	0.12	0.40
Default Company Ltd	12,761	0.11	12,683	0.11	-1.07
SH	12,647	0.11	12,371	0.11	0.52
Trust Provider B.V.	12,610	0.11	12,664	0.11	-2.09
World4You Internet Services GmbH	11,830	0.10	11,554	0.10	0.67
WEDOS Internet, a.s.	11,671	0.10	11,536	0.10	-0.52
DOMENY.PL sp. z o.o	9,570	0.08	9,352	0.08	0.62
Corporation Service Company	9,421	0.08	9,416	0.08	-1.62
Test Self SSL Company	8,965	0.08	8,750	0.07	0.74
KAGOYA-JAPAN	8,474	0.07	8,332	0.07	0.00
ZeroSSL	7,783	0.07	7,742	0.07	-1.15
www.sprinthost.ru	7,209	0.06	7,164	0.06	-1.06
Unspecified	6,829	0.06	6,296	0.05	6.65
ddos-guard	6,789	0.06	12,136	0.10	-45.00
The Trustico Group Ltd	6,422	0.05	6,381	0.05	-1.04
Caddy Self-Signed	5,720	0.05	5,765	0.05	-2.44
XX	5,667	0.05	5,553	0.05	0.34
CloudFlare, Inc.	5,553	0.05	5,532	0.05	-1.30
o2switch	5,273	0.04	4,909	0.04	5.62
Basekit Ltd	5,228	0.04	4,708	0.04	9.18
Dreamcommerce S.A.	5,209	0.04	5,056	0.04	1.30
TAIWAN-CA	4,824	0.04	4,688	0.04	1.18
T-Systems International GmbH	4,578	0.04	4,459	0.04	0.95
SSL Corporation	4,339	0.04	4,227	0.04	0.93
Mirohost	4,322	0.04	4,291	0.04	-0.96
dhosting.pl Sp. z o.o.	4,317	0.04	4,197	0.04	1.14
SwissSign AG	4,020	0.03	3,940	0.03	0.32
Buypass AS-983163327	3,880	0.03	3,840	0.03	-0.65
National Institute of Informatics	3,870	0.03	4,042	0.03	-5.86
nazwa.pl sp. z o.o.	3,869	0.03	3,762	0.03	1.12
GMO CLOUD K.K.	3,815	0.03	3,715	0.03	0.97
thawte, Inc.	3,685	0.03	3,704	0.03	-2.18
GeoTrust, Inc.	3,580	0.03	3,656	0.03	-3.72
HydrantID (Avalanche Cloud Corporation)	3,518	0.03	3,623	0.03	-4.52
DealerInspire	3,466	0.03	3,368	0.03	1.19
NetLock Kft.	3,446	0.03	3,422	0.03	-0.99
QuoVadis Trustlink B.V.	3,361	0.03	3,050	0.03	8.35
CentOS Web Panel	3,325	0.03	3,252	0.03	0.53
N/A	3,001	0.03	2,123	0.02	38.99
testexample	2,957	0.02	2,774	0.02	4.81
WoTrus CA Limited	2,946	0.02	2,827	0.02	2.46
SSL Server	2,860	0.02	2,840	0.02	-0.98
Bitrix	2,822	0.02	2,731	0.02	1.60
Guardian Inc.	2,801	0.02	2,787	0.02	-1.18
ONEsolution s.r.o.	2,707	0.02	2,654	0.02	0.29
Digital Element	2,687	0.02	2,685	0.02	-1.60
Beijing Knownsec Information Technology Co., Ltd	2,577	0.02	2,747	0.02	-7.76
unaone	2,457	0.02	2,463	0.02	-1.91
FASTVPS	2,416	0.02	2,351	0.02	1.04
Fasthosts Internet Limited	2,375	0.02	2,315	0.02	0.87
MyCompany	2,365	0.02	2,350	0.02	-1.05
Comodo Limited	2,348	0.02	2,340	0.02	-1.34
DivMulTech LLC	2,291	0.02	2,267	0.02	-0.63
EUNETIC GmbH	2,227	0.02	2,200	0.02	-0.47
StartCom Ltd.	2,209	0.02	2,205	0.02	-1.50

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.