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 2019 Count	December 2019 %	November 2019 Count	November 2019 %	Growth %
Let's Encrypt	1,871,966	21.13	1,713,612	20.83	1.44
COMODO CA Limited	1,529,033	17.26	1,477,767	17.96	-3.92
DigiCert	1,296,862	14.64	1,218,290	14.81	-1.15
Sectigo Limited	638,422	7.21	569,529	6.92	4.09
GlobalSign nv-sa	501,401	5.66	488,583	5.94	-4.70
cPanel, Inc.	445,475	5.03	399,032	4.85	3.67
GoDaddy.com, Inc.	339,570	3.83	319,568	3.88	-1.33
Unknown	305,495	3.45	262,195	3.19	8.19
Amazon	170,891	1.93	156,176	1.90	1.61
Starfield Technologies, Inc.	159,370	1.80	143,413	1.74	3.19
CloudFlare, Inc.	89,337	1.01	80,960	0.98	2.47
Plesk	78,587	0.89	70,881	0.86	2.95
SecureCore	75,392	0.85	66,095	0.80	5.92
Google Trust Services	70,328	0.79	68,661	0.83	-4.89
SomeOrganization	63,832	0.72	59,747	0.73	-0.79
none	62,401	0.70	55,951	0.68	3.56
ispgateway	58,102	0.66	53,482	0.65	0.88
Gehirn Inc.	56,769	0.64	49,014	0.60	7.55
Microsoft Corporation	52,978	0.60	49,729	0.60	-1.07
Internet2	49,701	0.56	47,540	0.58	-2.92
TERENA	49,130	0.55	46,509	0.57	-1.91
Unizeto Technologies S.A.	48,549	0.55	46,329	0.56	-2.69
GeoTrust Inc.	41,376	0.47	38,937	0.47	-1.32
Trustwave Holdings, Inc.	38,786	0.44	36,143	0.44	-0.35
Parallels	37,062	0.42	34,601	0.42	-0.54
Entrust, Inc.	35,750	0.40	34,262	0.42	-3.11
DreamHost	35,270	0.40	30,543	0.37	7.23
Odin	34,104	0.38	31,026	0.38	2.07
Gandi	31,922	0.36	30,495	0.37	-2.80
home.pl S.A.	28,854	0.33	26,249	0.32	2.07
Actalis S.p.A./03358520967	26,845	0.30	23,598	0.29	5.64
Webhosting	20,412	0.23	17,954	0.22	5.57
SECOM Trust Systems CO.,LTD.	17,987	0.20	17,301	0.21	-3.46
Cybertrust Japan Co., Ltd.	17,960	0.20	16,895	0.21	-1.29
QuoVadis Limited	16,595	0.19	15,890	0.19	-3.02
Network Solutions L.L.C.	16,556	0.19	16,179	0.20	-4.98
Apache HTTP Server	15,988	0.18	15,764	0.19	-5.82
nazwa.pl sp. z o.o.	15,821	0.18	14,494	0.18	1.36
Internet Widgits Pty Ltd	14,516	0.16	13,819	0.17	-2.46
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	13,241	0.15	12,666	0.15	-2.93
WebSupport, s.r.o.	11,715	0.13	10,455	0.13	4.05
TrustAsia Technologies, Inc.	11,432	0.13	9,790	0.12	8.43
Japan Registry Services Co., Ltd.	11,394	0.13	10,028	0.12	5.51
Caddy Self-Signed	9,900	0.11	9,997	0.12	-8.04
Trust Provider B.V.	9,595	0.11	8,797	0.11	1.28
Corporation Service Company	9,276	0.10	8,728	0.11	-1.31
SH	7,855	0.09	7,159	0.09	1.89
Acme Co	7,798	0.09	6,927	0.08	4.54
GoGetSSL	7,529	0.08	5,277	0.06	32.49
World4You Internet Services GmbH	7,475	0.08	6,494	0.08	6.89
io.ua	6,492	0.07	6,402	0.08	-5.84
Default Company Ltd	5,976	0.07	5,254	0.06	5.62
The Trustico Group Ltd	5,700	0.06	5,202	0.06	1.75
StartCom Ltd.	5,559	0.06	5,477	0.07	-5.75
WEDOS Internet, a.s.	5,374	0.06	5,494	0.07	-9.17
DOMENY.PL sp. z o.o	5,267	0.06	3,432	0.04	42.51
KAGOYA-JAPAN	5,232	0.06	4,711	0.06	3.13
Test Self SSL Company	5,210	0.06	4,563	0.06	6.03
thawte, Inc.	4,893	0.06	4,709	0.06	-3.51
XX	4,582	0.05	3,989	0.05	6.66
GeoTrust, Inc.	4,238	0.05	4,023	0.05	-2.18
www.sprinthost.ru	4,158	0.05	3,643	0.04	5.99
Comodo Limited	3,994	0.05	3,938	0.05	-5.82
Dreamcommerce S.A.	3,746	0.04	3,511	0.04	-0.93
Pizza-Taxi.de GmbH / CA	3,736	0.04	3,665	0.04	-5.34
HydrantID (Avalanche Cloud Corporation)	3,604	0.04	3,461	0.04	-3.30
National Institute of Informatics	3,549	0.04	3,376	0.04	-2.38
SwissSign AG	3,509	0.04	3,324	0.04	-1.97
Rede Nacional de Ensino e Pesquisa - RNP	3,378	0.04	3,160	0.04	-0.73
TAIWAN-CA	3,331	0.04	3,093	0.04	0.00
Mirohost	3,142	0.04	2,873	0.03	1.55
T-Systems International GmbH	3,135	0.04	2,956	0.04	-1.52
Buypass AS-983163327	2,824	0.03	2,620	0.03	0.09
Verisign	2,721	0.03	2,408	0.03	4.93
NetLock Kft.	2,468	0.03	2,272	0.03	0.87
Guardian Inc.	2,422	0.03	2,319	0.03	-3.02
Symantec Corporation	2,346	0.03	2,282	0.03	-4.54
SSL Corporation	2,232	0.03	2,000	0.02	3.63
dhosting.pl Sp. z o.o.	2,222	0.03	2,027	0.02	1.79
DealerInspire	2,203	0.02	1,940	0.02	5.45
GMO CLOUD K.K.	2,199	0.02	1,931	0.02	5.75
WoSign CA Limited	2,149	0.02	2,255	0.03	-11.51
MyCompany	2,089	0.02	2,031	0.02	-4.49
EUNETIC GmbH	2,070	0.02	1,925	0.02	-0.15
SSL Server	1,965	0.02	1,959	0.02	-6.86
CertCenter AG	1,959	0.02	2,046	0.02	-11.09
o2switch	1,919	0.02	1,739	0.02	2.47
WoTrus CA Limited	1,917	0.02	1,715	0.02	3.80
AC Camerfirma S.A.	1,748	0.02	1,712	0.02	-5.19
ONEsolution s.r.o.	1,746	0.02	1,509	0.02	7.44
Soluciones Corporativas IP, SL	1,742	0.02	1,601	0.02	1.04
N/A	1,727	0.02	1,556	0.02	3.06
Basekit Ltd	1,720	0.02	1,481	0.02	7.84
Comvive Servidores SL	1,704	0.02	1,543	0.02	2.55
Globe Hosting, Inc.	1,699	0.02	1,535	0.02	2.78
Unspecified	1,692	0.02	1,439	0.02	9.19
OVH	1,676	0.02	1,648	0.02	-5.56
Fasthosts Internet Limited	1,643	0.02	1,419	0.02	7.52
SSL.com	1,595	0.02	1,613	0.02	-8.18
Greenhost	1,520	0.02	0	0.00	N/A

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.