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	April 2020 Count	April 2020 %	March 2020 Count	March 2020 %	Growth %
Let's Encrypt	2,218,880	22.36	2,160,447	22.18	0.82
DigiCert	1,397,592	14.08	1,390,690	14.28	-1.35
COMODO CA Limited	1,324,228	13.34	1,411,135	14.49	-7.88
Sectigo Limited	959,539	9.67	875,029	8.98	7.65
GlobalSign nv-sa	547,687	5.52	538,058	5.52	-0.08
cPanel, Inc.	531,745	5.36	507,651	5.21	2.82
GoDaddy.com, Inc.	387,806	3.91	388,460	3.99	-2.00
Unknown	345,063	3.48	333,704	3.43	1.51
Amazon	192,785	1.94	190,569	1.96	-0.69
Starfield Technologies, Inc.	189,790	1.91	185,315	1.90	0.54
CloudFlare, Inc.	136,148	1.37	102,649	1.05	30.20
Plesk	92,030	0.93	89,646	0.92	0.78
SecureCore	91,416	0.92	87,568	0.90	2.48
Google Trust Services	77,443	0.78	74,451	0.76	2.11
SomeOrganization	72,995	0.74	73,361	0.75	-2.32
none	72,202	0.73	70,057	0.72	1.17
Gehirn Inc.	69,165	0.70	66,391	0.68	2.27
Unizeto Technologies S.A.	66,650	0.67	67,551	0.69	-3.14
ispgateway	62,515	0.63	61,631	0.63	-0.43
Microsoft Corporation	58,179	0.59	56,552	0.58	0.99
TERENA	53,366	0.54	52,199	0.54	0.36
Internet2	51,810	0.52	51,200	0.53	-0.67
DreamHost	43,515	0.44	41,628	0.43	2.61
Parallels	38,684	0.39	38,600	0.40	-1.62
GeoTrust Inc.	37,475	0.38	38,143	0.39	-3.55
Odin	37,212	0.37	36,932	0.38	-1.09
Entrust, Inc.	37,004	0.37	36,688	0.38	-0.99
home.pl S.A.	35,317	0.36	32,098	0.33	8.01
Trustwave Holdings, Inc.	34,721	0.35	34,297	0.35	-0.62
Gandi	33,850	0.34	33,357	0.34	-0.38
Actalis S.p.A./03358520967	32,463	0.33	31,417	0.32	1.43
Webhosting	24,105	0.24	23,396	0.24	1.14
Cybertrust Japan Co., Ltd.	19,775	0.20	19,191	0.20	1.15
GoGetSSL	17,883	0.18	16,904	0.17	3.85
QuoVadis Limited	17,598	0.18	17,403	0.18	-0.74
SECOM Trust Systems CO.,LTD.	17,057	0.17	17,438	0.18	-3.98
TrustAsia Technologies, Inc.	16,905	0.17	15,524	0.16	6.90
Apache HTTP Server	16,500	0.17	16,215	0.17	-0.11
Network Solutions L.L.C.	15,830	0.16	16,157	0.17	-3.82
Japan Registry Services Co., Ltd.	15,815	0.16	14,777	0.15	5.06
Internet Widgits Pty Ltd	15,024	0.15	15,019	0.15	-1.80
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	14,074	0.14	13,953	0.14	-0.98
WebSupport, s.r.o.	13,685	0.14	13,233	0.14	1.52
Trust Provider B.V.	10,722	0.11	10,357	0.11	1.62
Acme Co	10,235	0.10	9,166	0.09	9.61
Corporation Service Company	10,106	0.10	9,971	0.10	-0.51
SH	9,421	0.09	9,275	0.10	-0.29
WEDOS Internet, a.s.	9,332	0.09	8,873	0.09	3.24
World4You Internet Services GmbH	9,079	0.09	8,600	0.09	3.63
Default Company Ltd	8,893	0.09	8,811	0.09	-0.92
Caddy Self-Signed	8,500	0.09	10,211	0.10	-18.28
io.ua	7,105	0.07	6,684	0.07	4.35
DOMENY.PL sp. z o.o	6,595	0.07	5,442	0.06	18.96
KAGOYA-JAPAN	6,536	0.07	6,239	0.06	2.84
Test Self SSL Company	6,364	0.06	6,076	0.06	2.82
The Trustico Group Ltd	5,911	0.06	6,099	0.06	-4.86
FASTVPS	5,271	0.05	5,212	0.05	-0.72
www.sprinthost.ru	5,232	0.05	4,950	0.05	3.76
StartCom Ltd.	5,133	0.05	5,393	0.06	-6.57
thawte, Inc.	4,487	0.05	4,600	0.05	-4.25
Comodo Limited	4,391	0.04	4,231	0.04	1.88
Dreamcommerce S.A.	4,259	0.04	4,074	0.04	2.62
XX	4,079	0.04	4,865	0.05	-17.69
GeoTrust, Inc.	4,050	0.04	4,039	0.04	-1.57
TAIWAN-CA	3,895	0.04	3,724	0.04	2.67
National Institute of Informatics	3,789	0.04	3,743	0.04	-0.63
Rede Nacional de Ensino e Pesquisa - RNP	3,765	0.04	3,726	0.04	-0.81
SwissSign AG	3,726	0.04	3,686	0.04	-0.77
Mirohost	3,598	0.04	3,519	0.04	0.37
T-Systems International GmbH	3,578	0.04	3,462	0.04	1.45
HydrantID (Avalanche Cloud Corporation)	3,451	0.03	2,736	0.03	23.82
Buypass AS-983163327	3,130	0.03	3,057	0.03	0.51
SSL Corporation	3,016	0.03	2,923	0.03	1.29
dhosting.pl Sp. z o.o.	2,982	0.03	2,876	0.03	1.78
Verisign	2,873	0.03	2,857	0.03	-1.29
o2switch	2,797	0.03	2,520	0.03	8.96
N/A	2,786	0.03	2,747	0.03	-0.44
Guardian Inc.	2,762	0.03	2,710	0.03	0.05
NetLock Kft.	2,751	0.03	2,722	0.03	-0.79
DealerInspire	2,685	0.03	2,586	0.03	1.92
GMO CLOUD K.K.	2,672	0.03	2,580	0.03	1.67
nazwa.pl sp. z o.o.	2,661	0.03	2,341	0.02	11.58
Unspecified	2,629	0.03	2,417	0.02	6.77
Basekit Ltd	2,296	0.02	2,132	0.02	5.72
Symantec Corporation	2,273	0.02	2,294	0.02	-2.73
MyCompany	2,252	0.02	2,206	0.02	0.21
EUNETIC GmbH	2,175	0.02	2,156	0.02	-0.97
Soluciones Corporativas IP, SL	2,172	0.02	2,058	0.02	3.60
SSL Server	2,100	0.02	1,963	0.02	5.02
ONEsolution s.r.o.	2,078	0.02	2,019	0.02	1.03
CentOS Web Panel	2,022	0.02	0	0.00	N/A
WoSign CA Limited	2,000	0.02	2,037	0.02	-3.62
Globe Hosting, Inc.	1,946	0.02	1,958	0.02	-2.44
OVH	1,904	0.02	1,849	0.02	1.08
Fasthosts Internet Limited	1,892	0.02	1,841	0.02	0.88
WoTrus CA Limited	1,876	0.02	1,712	0.02	7.57
AC Camerfirma S.A.	1,849	0.02	1,905	0.02	-4.72
Comvive Servidores SL	1,811	0.02	1,837	0.02	-3.22
Greenhost	1,765	0.02	1,718	0.02	0.85
Bitrix	1,758	0.02	1,660	0.02	3.96

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.