LetsEncrypt Usage Statistics

Websites using LetsEncrypt

Download Lead List

Get a list of 8,391,144 websites using LetsEncrypt which includes location information, hosting data, contact details, 7,360,214 currently live websites and 1,030,930 sites that used this technology previously.

Top 10k
Top 100k
Top 1m

Quantcast Top 10k
395 of 10,000


Quantcast Top 100k
5,574 of 100,000


BuiltWith Top Million
81,547 of 939,844


Entire Internet
111,583 of 370,383,747


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Let’s Encrypt is a free open Certificate Authority.


Categories: SSL Certificates · Root Authority

Technology Won
Comodo SSL 68,267
Comodo PositiveSSL 49,403

This table shows where LetsEncrypt are gaining/losing customers from within the technologies in the same sub-categories of Root Authority. View the full report for more information regarding countries, states and where LetsEncrypt's customers come from.

Physical locations of businesses using LetsEncrypt.


Top 10,000 Sites
Top 100,000 Sites
Top 1 Million Sites

This chart shows the amount of websites within the top 10k, 100k, and 1 million sites groups that are categorized as being in the specific vertical.

Get access to data on 8,391,144 websites that have used LetsEncrypt. We know of 7,360,214 live websites using LetsEncrypt and an additional 1,030,930 sites that used LetsEncrypt historically

View Website List

Get a list of websites using LetsEncrypt

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Root Authority

GeoTrust SSL

110,962 websites


57,671 websites

GoDaddy SSL

53,997 websites

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Browse groups of technologies that we track.