Lets Encrypt

Category - Certificate Authority

Let's Encrypt is a free, automated, and open certificate authority brought to you by the nonprofit Internet Security Research Group (ISRG).



We have discovered  38,736,055 live websites   that are using Lets Encrypt.

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Technology usage statistics

Websites using Lets Encrypt38,736,055 websites
Most popular in the country United States
Market position in Certificate Authority#1
Market share in Certificate Authority57.62%

Technology adoption

Recent changes in Lets Encrypt usage. (See Lets Encrypt Usage Changes report)
Websites that added Lets Encrypt+2,365,554
Websites that dropped Lets Encrypt-1,030,700

Lets Encrypt usage distribution by website rank

The correlation between utilization of Lets Encrypt technology and the relative popularity of websites

Market Share

Lets Encrypt market share within the Certificate Authority category



Geographical Distribution

Technology usage distribution by websites across the globe.



Websites utilizing Lets Encrypt

Top websites that use Lets Encrypt
DomainCountryRankContacts
gmpg.org Canada10
player.vimeo.com United States51
en.wikipedia.org United States53
cdnjs.com United States61
idp.ecolint.ch Switzerland120
cdn.shopify.com United States125
See full domain list

Alternative Technologies


Sectigo: Total 4,555,339 domains found using Sectigo
DigiCert: Total 4,350,886 domains found using DigiCert
Google Trust Services: Total 3,606,802 domains found using Google Trust Services
GoDaddy CA: Total 2,768,096 domains found using GoDaddy CA
Encryption Everywhere CA: Total 2,190,966 domains found using Encryption Everywhere CA
cPanel CA: Total 2,003,554 domains found using cPanel CA
GlobalSign CA: Total 1,219,438 domains found using GlobalSign CA
AWS Certificate Manager: Total 1,084,733 domains found using AWS Certificate Manager
Cloudflare Certificate: Total 970,284 domains found using Cloudflare Certificate
RapidSSL CA: Total 710,752 domains found using RapidSSL CA