Certificate Authority

Certificate authority (CA) is an entity that issues digital certificates.


We have discovered 68,238,452 live Websites that use Certificate Authority.

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Certificate Authority usage statistics

Total sites that use Certificate Authority68,238,452 websites
Percentage of website that use category72.76%
Number of technologies in Certificate Authority category53
Category leader Lets Encrypt
Fastest Growing Technology Lets Encrypt
Most Popular in Country United States


Top Technologies

Top 6 technologies in Certificate Authority category (out of 53 total).

TechnologyWebsitesMarket ShareRecent changes
Lets Encrypt37,791,07955.38%+495,755
Sectigo6,400,0369.38%-362,378
DigiCert5,709,2958.37%-28,866
Cloudflare Certificate4,719,1966.92%-211,137
cPanel CA3,570,4175.23%-170,017
Encryption Everywhere CA2,431,9323.56%+20,787
See full technology list

Top technology switches

Number of websites that switched technologies within category in the past 3 months

FromToWebsite Count
Sectigo Lets Encrypt1,225,419
Lets Encrypt Sectigo1,021,660
cPanel CA Lets Encrypt218,640
Cloudflare Certificate Lets Encrypt134,576
Lets Encrypt DigiCert94,710
DigiCert Lets Encrypt84,968

Certificate Authority usage distribution by website popularity



Geographical Distribution

Category usage distribution by websites across the globe.






Websites utilizing Certificate Authority

Top websites that use Certificate Authority

DomainCountryRankContacts
fonts.googleapis.com United States1
facebook.com United States2
www.facebook.com United States2
google.com United States3
www.google.com United States3
wordpress.org United States4
See full domain list
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