Certificate Authority

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


We have discovered 62,927,151 live websites that use Certificate Authority.

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Certificate Authority usage statistics

Total sites that use Certificate Authority62,927,151 websites
Percentage of website that use category77.88%
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).
TechnologyWebsitesMarket ShareRecent changes
Lets Encrypt38,736,055 61.56% +1,334,854
Sectigo4,555,339 7.24% -912,237
DigiCert4,350,886 6.91% -154,564
Google Trust Services3,606,802 5.73% +220,401
GoDaddy CA2,768,096 4.40% +196,150
Encryption Everywhere CA2,190,966 3.48% -106,672
See full technology list

Top technology switches

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

FromToWebsite Count
Sectigo Lets Encrypt1,397,121
Lets Encrypt Sectigo509,053
cPanel CA Lets Encrypt297,770
Cloudflare Certificate Google Trust Services151,569
Cloudflare Certificate Lets Encrypt132,058
DigiCert Lets Encrypt67,445

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