Usage Distribution in the Top 10k Sites

Distribution for websites using providers

Technology	Websites	%
SSL by Default	8,311	83.11
HSTS	6,312	63.12
LetsEncrypt	4,486	44.86
DigiCert SSL	2,487	24.87
Amazon SSL	2,461	24.61
Sectigo SSL	1,012	10.12
GlobalSign	1,003	10.03
Common Name Invalid	838	8.38
GeoTrust SSL	737	7.37
Invalid Certificate Dates	660	6.6
Cloudflare SSL	651	6.51
GoDaddy SSL	446	4.46
GlobalSign OV	358	3.58
Entrust SSL	260	2.6
Symantec Secure Site	254	2.54
RapidSSL	248	2.48
Entrust EV	237	2.37
AlphaSSL	202	2.02
Thawte SSL	149	1.49
Encryption Everywhere	65	0.65
Comodo SSL	64	0.64
Starfield Technologies	57	0.57
CPanel SSL	56	0.56
Microsoft SSL	55	0.55
TrustAsia	51	0.51
GlobalSign EV	40	0.4
CERTUM	38	0.38
InCommon	38	0.38
GoGetSSL	27	0.27
SSL.com	25	0.25
SwissSign	22	0.22
JPRS	21	0.21
HydrantID	21	0.21
Buypass	15	0.15
Corporation Service Company SSL	15	0.15
WoTrus	14	0.14
QuoVadis	13	0.13
FujiSSL	11	0.11
Network Solutions SSL	10	0.1
MrDomain	6	0.06
Symantec Secure Site Pro	6	0.06
Trustico DV	5	0.05
Bundesdruckerei	4	0.04
China Financial Certification Authority	4	0.04
NETLOCK	4	0.04
Telia Finland SSL	2	0.02
TWCA	2	0.02
Gandi Standard SSL	2	0.02
Trustwave SSL	2	0.02
AffirmTrust	2	0.02
Symantec Secure Site Pro EV	2	0.02
Apple SSL	2	0.02
USERTrust	1	0.01
SecureCore	1	0.01
TERENA	1	0.01
Extended Validation Certificate	1	0.01
Aetna	1	0.01
Wells Fargo SSL	1	0.01
Symantec Secure Site with EV	1	0.01
TeleSec	1	0.01
Azure SSL	1	0.01
McAfee SSL	1	0.01
Akamai SSL	1	0.01
DreamHost SSL	1	0.01