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	October 2019 Count	October 2019 %	September 2019 Count	September 2019 %	Growth %
Let's Encrypt	1,275,500	20.21	1,519,777	20.02	0.93
COMODO CA Limited	1,268,243	20.09	1,485,873	19.58	2.65
DigiCert	975,059	15.45	1,165,849	15.36	0.58
Sectigo Limited	378,540	6.00	451,221	5.94	0.89
GlobalSign nv-sa	314,365	4.98	465,201	6.13	-18.73
cPanel, Inc.	289,501	4.59	349,828	4.61	-0.48
GoDaddy.com, Inc.	243,562	3.86	305,376	4.02	-4.08
Unknown	193,109	3.06	234,311	3.09	-0.89
Amazon	126,293	2.00	150,683	1.99	0.80
Starfield Technologies, Inc.	109,049	1.73	127,743	1.68	2.66
CloudFlare, Inc.	73,250	1.16	70,949	0.93	24.16
Google Trust Services	64,902	1.03	66,237	0.87	17.84
Plesk	53,609	0.85	63,658	0.84	1.28
SecureCore	46,538	0.74	56,002	0.74	-0.06
SomeOrganization	44,907	0.71	52,959	0.70	1.98
none	40,542	0.64	50,147	0.66	-2.77
ispgateway	40,310	0.64	48,960	0.65	-0.99
Internet2	37,281	0.59	45,239	0.60	-0.89
TERENA	36,085	0.57	43,769	0.58	-0.85
Gehirn Inc.	34,339	0.54	41,178	0.54	0.29
Unizeto Technologies S.A.	33,098	0.52	43,146	0.57	-7.75
Microsoft Corporation	31,698	0.50	20,773	0.27	83.51
GeoTrust Inc.	30,380	0.48	35,001	0.46	4.38
Entrust, Inc.	27,527	0.44	32,973	0.43	0.40
Parallels	26,937	0.43	33,165	0.44	-2.32
Odin	23,594	0.37	28,528	0.38	-0.54
Gandi	23,220	0.37	29,584	0.39	-5.61
DreamHost	21,837	0.35	25,918	0.34	1.33
home.pl S.A.	19,753	0.31	23,707	0.31	0.20
Trustwave Holdings, Inc.	19,547	0.31	34,596	0.46	-32.05
Actalis S.p.A./03358520967	17,030	0.27	20,363	0.27	0.58
Apache HTTP Server	15,388	0.24	15,545	0.20	19.05
Cybertrust Japan Co., Ltd.	14,441	0.23	15,861	0.21	9.49
Network Solutions L.L.C.	13,500	0.21	16,147	0.21	0.55
Webhosting	12,759	0.20	15,744	0.21	-2.54
QuoVadis Limited	12,743	0.20	14,854	0.20	3.17
SECOM Trust Systems CO.,LTD.	11,605	0.18	15,526	0.20	-10.11
Internet Widgits Pty Ltd	11,395	0.18	13,351	0.18	2.64
nazwa.pl sp. z o.o.	10,294	0.16	13,399	0.18	-7.61
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	9,676	0.15	11,868	0.16	-1.95
Caddy Self-Signed	7,966	0.13	10,032	0.13	-4.51
WebSupport, s.r.o.	7,844	0.12	9,613	0.13	-1.87
Japan Registry Services Co., Ltd.	7,129	0.11	8,927	0.12	-3.96
Trust Provider B.V.	6,752	0.11	8,108	0.11	0.15
TrustAsia Technologies, Inc.	6,692	0.11	8,871	0.12	-9.28
Corporation Service Company	6,537	0.10	7,941	0.10	-1.00
io.ua	6,339	0.10	6,313	0.08	20.76
Hosting Ukraine LLC	6,315	0.10	7,559	0.10	0.47
SH	5,383	0.09	6,179	0.08	4.77
WEDOS Internet, a.s.	4,996	0.08	5,892	0.08	1.97
StartCom Ltd.	4,951	0.08	5,594	0.07	6.44
Acme Co	4,791	0.08	5,239	0.07	9.98
World4You Internet Services GmbH	4,418	0.07	5,514	0.07	-3.64
The Trustico Group Ltd	4,046	0.06	4,883	0.06	-0.35
thawte, Inc.	3,998	0.06	4,921	0.06	-2.30
Default Company Ltd	3,993	0.06	4,883	0.06	-1.66
GoGetSSL	3,809	0.06	2,965	0.04	54.49
Pizza-Taxi.de GmbH / CA	3,603	0.06	3,590	0.05	20.70
KAGOYA-JAPAN	3,383	0.05	4,170	0.05	-2.44
Dreamcommerce S.A.	3,274	0.05	3,197	0.04	23.16
Test Self SSL Company	3,259	0.05	3,965	0.05	-1.15
XX	3,183	0.05	3,630	0.05	5.45
GeoTrust, Inc.	3,137	0.05	3,974	0.05	-5.07
Comodo Limited	3,062	0.05	3,664	0.05	0.50
HydrantID (Avalanche Cloud Corporation)	3,028	0.05	3,381	0.04	7.71
DOMENY.PL sp. z o.o	2,692	0.04	3,219	0.04	0.57
www.sprinthost.ru	2,676	0.04	3,245	0.04	-0.83
National Institute of Informatics	2,668	0.04	3,183	0.04	0.80
Rede Nacional de Ensino e Pesquisa - RNP	2,547	0.04	2,917	0.04	5.01
T-Systems International GmbH	2,500	0.04	2,786	0.04	7.92
TAIWAN-CA	2,296	0.04	2,935	0.04	-5.92
SwissSign AG	2,198	0.03	3,182	0.04	-16.93
Mirohost	2,110	0.03	2,591	0.03	-2.06
Buypass AS-983163327	2,000	0.03	2,359	0.03	1.96
SSL Server	1,878	0.03	1,803	0.02	25.26
WoSign CA Limited	1,863	0.03	2,130	0.03	5.19
Symantec Corporation	1,829	0.03	2,436	0.03	-9.70
NetLock Kft.	1,719	0.03	2,138	0.03	-3.31
MyCompany	1,627	0.03	1,858	0.02	5.31
CertCenter AG	1,599	0.03	1,792	0.02	7.31
EUNETIC GmbH	1,583	0.03	1,838	0.02	3.58
GMO CLOUD K.K.	1,489	0.02	1,664	0.02	7.61
dhosting.pl Sp. z o.o.	1,483	0.02	1,830	0.02	-2.54
Guardian Inc.	1,473	0.02	2,058	0.03	-13.92
SSL.com	1,457	0.02	1,940	0.03	-9.68
OVH	1,383	0.02	1,507	0.02	10.37
Comvive Servidores SL	1,367	0.02	1,366	0.02	20.35
AC Camerfirma S.A.	1,321	0.02	1,727	0.02	-8.01
SSL Corporation	1,318	0.02	1,451	0.02	9.24
Nijimo, Inc.	1,269	0.02	1,796	0.02	-15.03
Globe Hosting, Inc.	1,254	0.02	1,416	0.02	6.50
DealerInspire	1,252	0.02	1,629	0.02	-7.57
AffirmTrust	1,212	0.02	0	0.00	N/A
Basekit Ltd	1,194	0.02	1,259	0.02	14.05
UIC	1,171	0.02	0	0.00	N/A
Soluciones Corporativas IP, SL	1,169	0.02	1,526	0.02	-7.87
ONEsolution s.r.o.	1,144	0.02	1,270	0.02	8.33
Fasthosts Internet Limited	1,102	0.02	1,325	0.02	0.02
FASTVPS	1,011	0.02	0	0.00	N/A
Apache Haus Distribution Test Certificate	1,000	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.