Certificate Authority

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



We have discovered 42,661,486 live websites that use Certificate Authority.

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Certificate Authority usage statistics

Total sites that use Certificate Authority42,661,486 websites
Percentage of website that use category69.06%
Number of technologies in Certificate Authority category54

Category leader Lets Encrypt
Fastest Growing Technology Sectigo
Most Popular in Country United States

Website Distribution by Country

Number of websites using Certificate Authority
United States16,859,413 websites



Germany5,095,745 websites
France1,926,441 websites
Japan1,444,006 websites
Russia1,406,637 websites
Netherlands1,307,747 websites
Israel1,195,390 websites
GB1,191,880 websites
Italy977,744 websites
Canada752,748 websites

Website Distribution by TLD

Number of websites using Certificate Authority
.com18,817,481 websites
.de3,193,971 websites
.org1,898,773 websites
.net1,444,377 websites
.ru1,181,776 websites
.nl1,161,940 websites
.co.uk1,044,905 websites
.it893,796 websites
.fr765,233 websites
.pl624,409 websites

Top technology switches

Number of websites that recently switched technologies within category

FromToWebsite Count
DigiCert Sectigo325,042
Encryption Everywhere CA Sectigo277,204
Lets Encrypt GoDaddy CA80,547
cPanel CA Lets Encrypt61,857
Sectigo Lets Encrypt44,104
GoDaddy CA Lets Encrypt40,173

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