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 only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	June 2021 Count	June 2021 %	May 2021 Count	May 2021 %	Growth %
Let's Encrypt	1,498,951	27.75	3,247,919	25.16	10.26
Sectigo Limited	1,231,600	22.80	2,516,442	19.50	16.93
DigiCert	605,376	11.21	1,642,256	12.72	-11.93
GlobalSign nv-sa	240,190	4.45	579,115	4.49	-0.91
Unknown	201,365	3.73	492,249	3.81	-2.27
Amazon	185,560	3.43	254,693	1.97	74.06
GoDaddy.com, Inc.	177,374	3.28	411,697	3.19	2.93
cPanel, Inc.	143,023	2.65	786,235	6.09	-56.54
Plesk	80,712	1.49	112,439	0.87	71.50
Google Trust Services	78,009	1.44	87,640	0.68	112.66
SomeOrganization	72,675	1.35	100,058	0.78	73.53
COMODO CA Limited	69,579	1.29	168,039	1.30	-1.08
Starfield Technologies, Inc.	59,111	1.09	235,619	1.83	-40.06
Unizeto Technologies S.A.	44,158	0.82	268,126	2.08	-60.65
Actalis S.p.A.	41,617	0.77	45,794	0.35	117.12
Cloudflare, Inc.	38,549	0.71	227,959	1.77	-59.60
GoGetSSL	27,780	0.51	45,188	0.35	46.87
Parallels	27,565	0.51	36,491	0.28	80.47
Internet2	24,999	0.46	54,652	0.42	9.28
Gandi	23,078	0.43	38,140	0.30	44.56
Odin	21,959	0.41	30,820	0.24	70.22
TrustAsia Technologies, Inc.	21,373	0.40	35,295	0.27	44.67
GEANT Vereniging	19,815	0.37	39,125	0.30	21.00
Japan Registry Services Co., Ltd.	16,994	0.31	24,891	0.19	63.11
Apache HTTP Server	15,912	0.29	16,516	0.13	130.17
Soluciones Corporativas IP, SL	15,727	0.29	16,044	0.12	134.19
Cybertrust Japan Co., Ltd.	15,436	0.29	22,062	0.17	67.16
TERENA	15,314	0.28	25,112	0.19	45.69
ddos-guard	14,955	0.28	12,388	0.10	188.42
SH	14,947	0.28	14,407	0.11	147.86
Entrust, Inc.	14,689	0.27	37,384	0.29	-6.13
SECOM Trust Systems CO.,LTD.	13,868	0.26	20,466	0.16	61.89
Internet Widgits Pty Ltd	12,378	0.23	18,374	0.14	60.95
Test Self SSL Company	11,478	0.21	11,032	0.09	148.57
none	10,701	0.20	97,854	0.76	-73.87
Default Company Ltd	10,308	0.19	14,281	0.11	72.44
Microsoft Corporation	10,265	0.19	64,167	0.50	-61.78
testexample	9,404	0.17	7,113	0.06	215.86
GeoTrust Inc.	9,071	0.17	24,060	0.19	-9.93
Google Trust Services LLC	7,134	0.13	5,182	0.04	228.90
QuoVadis Limited	7,025	0.13	14,446	0.11	16.18
KAGOYA-JAPAN	6,820	0.13	9,132	0.07	78.42
XX	6,024	0.11	6,629	0.05	117.11
DOMENY.PL sp. z o.o	6,020	0.11	10,258	0.08	40.21
Network Solutions L.L.C.	6,011	0.11	15,584	0.12	-7.85
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	5,961	0.11	15,518	0.12	-8.23
Corporation Service Company	5,933	0.11	8,659	0.07	63.70
WoTrus CA Limited	5,307	0.10	5,797	0.04	118.72
Trust Provider B.V.	5,161	0.10	7,983	0.06	54.45
dhosting.pl Sp. z o.o.	4,905	0.09	5,095	0.04	130.00
ZeroSSL	4,840	0.09	8,137	0.06	42.11
Unspecified	4,797	0.09	9,521	0.07	20.37
home.pl S.A.	4,767	0.09	47,240	0.37	-75.89
Mirohost	4,590	0.08	4,532	0.04	141.97
CloudFlare, Inc.	4,385	0.08	8,755	0.07	19.66
Beijing Knownsec Information Technology Co., Ltd	3,757	0.07	3,523	0.03	154.78
CentOS Web Panel	3,580	0.07	3,511	0.03	143.61
Buypass AS-983163327	3,091	0.06	4,391	0.03	68.18
FASTVPS	3,045	0.06	2,750	0.02	164.54
Guardian Inc.	3,026	0.06	2,988	0.02	141.95
SSL Server	2,993	0.06	2,964	0.02	141.25
SSL Corporation	2,879	0.05	4,761	0.04	44.47
Digital Element	2,690	0.05	2,689	0.02	139.00
DivMulTech LLC	2,429	0.04	2,398	0.02	142.00
Bitrix	2,419	0.04	3,354	0.03	72.31
GeoTrust, Inc.	2,406	0.04	3,583	0.03	60.43
TAIWAN-CA	2,318	0.04	5,159	0.04	7.35
Webgarden	2,265	0.04	0	0.00	N/A
nazwa.pl sp. z o.o.	2,193	0.04	3,142	0.02	66.75
SmugMug	2,092	0.04	0	0.00	N/A
My Company Ltd	2,028	0.04	0	0.00	N/A
thawte, Inc.	1,950	0.04	3,069	0.02	51.80
The Trustico Group Ltd	1,921	0.04	3,236	0.03	41.83
StartCom Ltd.	1,694	0.03	0	0.00	N/A
Alpiro s.r.o.	1,690	0.03	6,173	0.05	-34.59
Trustwave Holdings, Inc.	1,602	0.03	30,546	0.24	-87.47
SecureCore	1,592	0.03	134,542	1.04	-97.17
cndns	1,582	0.03	0	0.00	N/A
SwissSign AG	1,566	0.03	3,921	0.03	-4.58
MyCompany	1,553	0.03	2,409	0.02	54.02
OVH	1,498	0.03	0	0.00	N/A
N/A	1,415	0.03	3,061	0.02	10.44
AfterMarket.pl	1,415	0.03	0	0.00	N/A
Skok.CZ	1,413	0.03	0	0.00	N/A
ZONER Software, a.s.	1,381	0.03	0	0.00	N/A
NetLock Kft.	1,328	0.02	3,301	0.03	-3.89
Comodo Japan, Inc.	1,257	0.02	0	0.00	N/A
Bitnami	1,236	0.02	0	0.00	N/A
Acme Co	1,213	0.02	19,003	0.15	-84.75
Dattatec.com	1,209	0.02	0	0.00	N/A
QuoVadis Trustlink B.V.	1,205	0.02	3,728	0.03	-22.78
EUNETIC GmbH	1,161	0.02	0	0.00	N/A
CA	1,083	0.02	0	0.00	N/A
Symantec Corporation	1,000	0.02	0	0.00	N/A
lxlabs	979	0.02	0	0.00	N/A
Chunghwa Telecom Co., Ltd.	978	0.02	0	0.00	N/A
SpinupWP	933	0.02	2,376	0.02	-6.19
Comodo Limited	884	0.02	0	0.00	N/A
SWsoft, Inc.	869	0.02	0	0.00	N/A
Yandex LLC	846	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.