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	November 2019 Count	November 2019 %	October 2019 Count	October 2019 %	Growth %
Let's Encrypt	1,713,612	20.83	1,275,500	20.21	3.08
COMODO CA Limited	1,477,767	17.96	1,268,243	20.09	-10.60
DigiCert	1,218,290	14.81	975,059	15.45	-4.14
Sectigo Limited	569,529	6.92	378,540	6.00	15.43
GlobalSign nv-sa	488,583	5.94	314,365	4.98	19.24
cPanel, Inc.	399,032	4.85	289,501	4.59	5.75
GoDaddy.com, Inc.	319,568	3.88	243,562	3.86	0.67
Unknown	262,195	3.19	193,109	3.06	4.17
Amazon	156,176	1.90	126,293	2.00	-5.12
Starfield Technologies, Inc.	143,413	1.74	109,049	1.73	0.90
CloudFlare, Inc.	80,960	0.98	73,250	1.16	-15.20
Plesk	70,881	0.86	53,609	0.85	1.44
Google Trust Services	68,661	0.83	64,902	1.03	-18.83
SecureCore	66,095	0.80	46,538	0.74	8.97
SomeOrganization	59,747	0.73	44,907	0.71	2.08
none	55,951	0.68	40,542	0.64	5.89
ispgateway	53,482	0.65	40,310	0.64	1.80
Microsoft Corporation	49,729	0.60	31,698	0.50	20.37
Gehirn Inc.	49,014	0.60	34,339	0.54	9.51
Internet2	47,540	0.58	37,281	0.59	-2.16
TERENA	46,509	0.57	36,085	0.57	-1.11
Unizeto Technologies S.A.	46,329	0.56	33,098	0.52	7.39
GeoTrust Inc.	38,937	0.47	30,380	0.48	-1.67
Trustwave Holdings, Inc.	36,143	0.44	19,547	0.31	41.87
Parallels	34,601	0.42	26,937	0.43	-1.45
Entrust, Inc.	34,262	0.42	27,527	0.44	-4.50
Odin	31,026	0.38	23,594	0.37	0.89
DreamHost	30,543	0.37	21,837	0.35	7.31
Gandi	30,495	0.37	23,220	0.37	0.76
home.pl S.A.	26,249	0.32	19,753	0.31	1.96
Actalis S.p.A./03358520967	23,598	0.29	17,030	0.27	6.31
Webhosting	17,954	0.22	12,759	0.20	7.96
SECOM Trust Systems CO.,LTD.	17,301	0.21	11,605	0.18	14.38
Cybertrust Japan Co., Ltd.	16,895	0.21	14,441	0.23	-10.24
Network Solutions L.L.C.	16,179	0.20	13,500	0.21	-8.05
QuoVadis Limited	15,890	0.19	12,743	0.20	-4.33
Apache HTTP Server	15,764	0.19	15,388	0.24	-21.40
nazwa.pl sp. z o.o.	14,494	0.18	10,294	0.16	8.03
Internet Widgits Pty Ltd	13,819	0.17	11,395	0.18	-6.95
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	12,666	0.15	9,676	0.15	0.43
WebSupport, s.r.o.	10,455	0.13	7,844	0.12	2.26
Japan Registry Services Co., Ltd.	10,028	0.12	7,129	0.11	7.92
Caddy Self-Signed	9,997	0.12	7,966	0.13	-3.71
TrustAsia Technologies, Inc.	9,790	0.12	6,692	0.11	12.24
Trust Provider B.V.	8,797	0.11	6,752	0.11	-0.04
Corporation Service Company	8,728	0.11	6,537	0.10	2.44
SH	7,159	0.09	5,383	0.09	2.04
Acme Co	6,927	0.08	4,791	0.08	10.93
World4You Internet Services GmbH	6,494	0.08	4,418	0.07	12.78
io.ua	6,402	0.08	6,339	0.10	-22.51
WEDOS Internet, a.s.	5,494	0.07	4,996	0.08	-15.63
StartCom Ltd.	5,477	0.07	4,951	0.08	-15.12
GoGetSSL	5,277	0.06	3,809	0.06	6.29
Default Company Ltd	5,254	0.06	3,993	0.06	0.95
The Trustico Group Ltd	5,202	0.06	4,046	0.06	-1.35
KAGOYA-JAPAN	4,711	0.06	3,383	0.05	6.84
thawte, Inc.	4,709	0.06	3,998	0.06	-9.63
Test Self SSL Company	4,563	0.06	3,259	0.05	7.42
GeoTrust, Inc.	4,023	0.05	3,137	0.05	-1.61
XX	3,989	0.05	3,183	0.05	-3.85
Comodo Limited	3,938	0.05	3,062	0.05	-1.33
Pizza-Taxi.de GmbH / CA	3,665	0.04	3,603	0.06	-21.96
www.sprinthost.ru	3,643	0.04	2,676	0.04	4.45
Dreamcommerce S.A.	3,511	0.04	3,274	0.05	-17.72
HydrantID (Avalanche Cloud Corporation)	3,461	0.04	3,028	0.05	-12.30
DOMENY.PL sp. z o.o	3,432	0.04	2,692	0.04	-2.19
National Institute of Informatics	3,376	0.04	2,668	0.04	-2.92
SwissSign AG	3,324	0.04	2,198	0.03	16.03
Rede Nacional de Ensino e Pesquisa - RNP	3,160	0.04	2,547	0.04	-4.81
TAIWAN-CA	3,093	0.04	2,296	0.04	3.36
T-Systems International GmbH	2,956	0.04	2,500	0.04	-9.28
Mirohost	2,873	0.03	2,110	0.03	4.47
Buypass AS-983163327	2,620	0.03	2,000	0.03	0.51
Verisign	2,408	0.03	0	0.00	N/A
Guardian Inc.	2,319	0.03	1,473	0.02	20.79
Symantec Corporation	2,282	0.03	1,829	0.03	-4.27
NetLock Kft.	2,272	0.03	1,719	0.03	1.41
WoSign CA Limited	2,255	0.03	1,863	0.03	-7.13
CertCenter AG	2,046	0.02	1,599	0.03	-1.83
MyCompany	2,031	0.02	1,627	0.03	-4.22
dhosting.pl Sp. z o.o.	2,027	0.02	1,483	0.02	4.87
SSL Corporation	2,000	0.02	1,318	0.02	16.43
SSL Server	1,959	0.02	1,878	0.03	-19.97
DealerInspire	1,940	0.02	1,252	0.02	18.89
GMO CLOUD K.K.	1,931	0.02	1,489	0.02	-0.50
EUNETIC GmbH	1,925	0.02	1,583	0.03	-6.70
o2switch	1,739	0.02	0	0.00	N/A
WoTrus CA Limited	1,715	0.02	0	0.00	N/A
AC Camerfirma S.A.	1,712	0.02	1,321	0.02	-0.57
OVH	1,648	0.02	1,383	0.02	-8.57
SSL.com	1,613	0.02	1,457	0.02	-15.06
Soluciones Corporativas IP, SL	1,601	0.02	1,169	0.02	5.08
N/A	1,556	0.02	0	0.00	N/A
Comvive Servidores SL	1,543	0.02	1,367	0.02	-13.40
Globe Hosting, Inc.	1,535	0.02	1,254	0.02	-6.08
Nijimo, Inc.	1,511	0.02	1,269	0.02	-8.64
ONEsolution s.r.o.	1,509	0.02	1,144	0.02	1.20
Basekit Ltd	1,481	0.02	1,194	0.02	-4.83
Unspecified	1,439	0.02	0	0.00	N/A
Fasthosts Internet Limited	1,419	0.02	1,102	0.02	-1.21

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.