Certificate Authority

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



We have discovered 63,333,850 live websites that use Certificate Authority.

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Certificate Authority usage statistics

Total sites that use Certificate Authority63,333,850 websites
Percentage of website that use category77.25%
Number of technologies in Certificate Authority category54

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 54 total).
See full technology list

Top technology switches

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

FromToWebsite Count
Sectigo Lets Encrypt1,123,767
Lets Encrypt Sectigo661,970
cPanel CA Lets Encrypt284,866
Cloudflare Certificate Google Trust Services148,731
Lets Encrypt Google Trust Services76,917
DigiCert Lets Encrypt74,608

Certificate Authority usage distribution by website rank

The correlation between utilization of Certificate Authority technologies and the relative popularity of websites

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