Certificate Authority

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


We have discovered 47,916,981 live websites that use Certificate Authority.

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Certificate Authority usage statistics

Total sites that use Certificate Authority47,916,981 websites
Percentage of website that use category72.54%
Number of technologies in Certificate Authority category54
Category leader Lets Encrypt
Fastest Growing Technology Lets Encrypt
Most Popular in Country United States

Certificate Authority usage by Country

United States19,626,787 websites


Germany5,148,548 websites
France2,118,207 websites
Japan1,578,889 websites
Israel1,524,465 websites
Russia1,507,445 websites
Netherlands1,425,926 websites
GB1,317,610 websites
Italy1,040,635 websites
Canada909,466 websites

Certificate Authority usage by TLD

.com21,482,686 websites
.de3,313,616 websites
.org2,155,549 websites
.net1,654,618 websites
.ru1,296,822 websites
.nl1,259,833 websites
.co.uk1,242,214 websites
.it944,454 websites
.fr841,117 websites
.pl690,490 websites

Top Technologies

Top 6 technologies in Certificate Authority category (out of 54 total).
TechnologyWebsitesMarket ShareRecent changes
Lets Encrypt31,485,136 65.71% +670,825
DigiCert3,620,411 7.56% -99,177
Sectigo2,842,238 5.93% -811,897
GoDaddy CA2,829,441 5.90% +165,432
Encryption Everywhere CA1,835,243 3.83% +88,542
GlobalSign CA1,092,401 2.28% -27,320
See full technology list

Top technology switches

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

FromToWebsite Count
cPanel CA Lets Encrypt232,398
DigiCert Lets Encrypt67,414
Sectigo Lets Encrypt67,306
Lets Encrypt Google Trust Services56,626
Lets Encrypt GoDaddy CA53,079
Google Trust Services Lets Encrypt47,141

Websites utilizing Certificate Authority

Top websites that use Certificate Authority
DomainCountryRankContacts
facebook.com United States2
wordpress.org United States4
s.w.org United States5
twitter.com United States7
instagram.com United States9
gmpg.org Canada10
See full domain list