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	September 2019 Count	September 2019 %	August 2019 Count	August 2019 %	Growth %
Let's Encrypt	1,519,777	20.02	1,400,841	19.61	2.11
COMODO CA Limited	1,485,873	19.58	1,466,912	20.53	-4.66
DigiCert	1,165,849	15.36	1,103,706	15.45	-0.58
GlobalSign nv-sa	465,201	6.13	443,922	6.21	-1.37
Sectigo Limited	451,221	5.94	386,833	5.41	9.79
cPanel, Inc.	349,828	4.61	318,352	4.46	3.43
GoDaddy.com, Inc.	305,376	4.02	300,028	4.20	-4.20
Unknown	234,311	3.09	217,738	3.05	1.28
Amazon	150,683	1.99	142,636	2.00	-0.57
Starfield Technologies, Inc.	127,743	1.68	109,985	1.54	9.32
CloudFlare, Inc.	70,949	0.93	65,112	0.91	2.56
Google Trust Services	66,237	0.87	64,892	0.91	-3.93
Plesk	63,658	0.84	57,108	0.80	4.92
SecureCore	56,002	0.74	49,810	0.70	5.82
SomeOrganization	52,959	0.70	49,706	0.70	0.28
none	50,147	0.66	45,846	0.64	2.95
ispgateway	48,960	0.65	45,603	0.64	1.05
Internet2	45,239	0.60	43,835	0.61	-2.87
TERENA	43,769	0.58	41,991	0.59	-1.89
Unizeto Technologies S.A.	43,146	0.57	41,484	0.58	-2.11
Gehirn Inc.	41,178	0.54	36,147	0.51	7.22
GeoTrust Inc.	35,001	0.46	34,206	0.48	-3.69
Trustwave Holdings, Inc.	34,596	0.46	32,665	0.46	-0.32
Parallels	33,165	0.44	31,503	0.44	-0.91
Entrust, Inc.	32,973	0.43	31,960	0.45	-2.90
Gandi	29,584	0.39	28,543	0.40	-2.45
Odin	28,528	0.38	26,443	0.37	1.54
DreamHost	25,918	0.34	22,910	0.32	6.48
home.pl S.A.	23,707	0.31	22,088	0.31	1.02
Microsoft Corporation	20,773	0.27	20,550	0.29	-4.86
Actalis S.p.A./03358520967	20,363	0.27	18,233	0.26	5.12
Network Solutions L.L.C.	16,147	0.21	16,555	0.23	-8.20
Cybertrust Japan Co., Ltd.	15,861	0.21	15,296	0.21	-2.40
Webhosting	15,744	0.21	14,214	0.20	4.25
Apache HTTP Server	15,545	0.20	15,405	0.22	-5.02
SECOM Trust Systems CO.,LTD.	15,526	0.20	14,065	0.20	3.90
QuoVadis Limited	14,854	0.20	14,709	0.21	-4.95
nazwa.pl sp. z o.o.	13,399	0.18	12,330	0.17	2.28
Internet Widgits Pty Ltd	13,351	0.18	12,428	0.17	1.11
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	11,868	0.16	11,414	0.16	-2.14
Caddy Self-Signed	10,032	0.13	9,944	0.14	-5.05
WebSupport, s.r.o.	9,613	0.13	8,807	0.12	2.73
Japan Registry Services Co., Ltd.	8,927	0.12	8,241	0.12	1.96
TrustAsia Technologies, Inc.	8,871	0.12	8,310	0.12	0.47
Trust Provider B.V.	8,108	0.11	7,529	0.11	1.36
Corporation Service Company	7,941	0.10	7,339	0.10	1.84
Hosting Ukraine LLC	7,559	0.10	7,064	0.10	0.72
io.ua	6,313	0.08	6,225	0.09	-4.55
SH	6,179	0.08	5,643	0.08	3.06
WEDOS Internet, a.s.	5,892	0.08	5,327	0.07	4.10
StartCom Ltd.	5,594	0.07	5,579	0.08	-5.63
World4You Internet Services GmbH	5,514	0.07	4,878	0.07	6.39
Acme Co	5,239	0.07	4,746	0.07	3.90
thawte, Inc.	4,921	0.06	4,828	0.07	-4.07
The Trustico Group Ltd	4,883	0.06	5,586	0.08	-17.72
Default Company Ltd	4,883	0.06	4,539	0.06	1.25
KAGOYA-JAPAN	4,170	0.05	3,840	0.05	2.21
GeoTrust, Inc.	3,974	0.05	3,878	0.05	-3.55
Test Self SSL Company	3,965	0.05	3,623	0.05	3.00
Comodo Limited	3,664	0.05	3,546	0.05	-2.75
XX	3,630	0.05	3,348	0.05	2.05
Pizza-Taxi.de GmbH / CA	3,590	0.05	3,560	0.05	-5.09
HydrantID (Avalanche Cloud Corporation)	3,381	0.04	3,554	0.05	-10.46
www.sprinthost.ru	3,245	0.04	2,971	0.04	2.80
DOMENY.PL sp. z o.o	3,219	0.04	2,982	0.04	1.60
Dreamcommerce S.A.	3,197	0.04	3,038	0.04	-0.95
National Institute of Informatics	3,183	0.04	3,038	0.04	-1.39
SwissSign AG	3,182	0.04	3,015	0.04	-0.67
GoGetSSL	2,965	0.04	1,725	0.02	61.78
TAIWAN-CA	2,935	0.04	2,818	0.04	-1.97
Rede Nacional de Ensino e Pesquisa - RNP	2,917	0.04	2,792	0.04	-1.67
T-Systems International GmbH	2,786	0.04	2,672	0.04	-1.86
Mirohost	2,591	0.03	2,432	0.03	0.27
Symantec Corporation	2,436	0.03	2,498	0.03	-8.22
Buypass AS-983163327	2,359	0.03	2,201	0.03	0.88
Verisign	2,149	0.03	1,971	0.03	2.62
NetLock Kft.	2,138	0.03	2,036	0.03	-1.16
WoSign CA Limited	2,130	0.03	2,110	0.03	-4.99
Guardian Inc.	2,058	0.03	1,995	0.03	-2.91
SSL.com	1,940	0.03	1,944	0.03	-6.07
MyCompany	1,858	0.02	1,816	0.03	-3.70
EUNETIC GmbH	1,838	0.02	1,966	0.03	-12.01
dhosting.pl Sp. z o.o.	1,830	0.02	1,707	0.02	0.90
SSL Server	1,803	0.02	1,547	0.02	9.70
Nijimo, Inc.	1,796	0.02	1,924	0.03	-12.14
CertCenter AG	1,792	0.02	1,690	0.02	-0.20
AC Camerfirma S.A.	1,727	0.02	1,725	0.02	-5.77
GMO CLOUD K.K.	1,664	0.02	1,488	0.02	5.25
DealerInspire	1,629	0.02	1,417	0.02	8.20
Soluciones Corporativas IP, SL	1,526	0.02	1,413	0.02	1.65
OVH	1,507	0.02	1,415	0.02	0.24
o2switch	1,479	0.02	1,290	0.02	7.91
SSL Corporation	1,451	0.02	1,287	0.02	6.11
WoTrus CA Limited	1,442	0.02	1,307	0.02	3.84
N/A	1,423	0.02	1,319	0.02	1.54
Globe Hosting, Inc.	1,416	0.02	1,311	0.02	1.66
Comvive Servidores SL	1,366	0.02	1,239	0.02	3.77
Fasthosts Internet Limited	1,325	0.02	1,189	0.02	4.89
ONEsolution s.r.o.	1,270	0.02	0	0.00	N/A
Basekit Ltd	1,259	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.