Forces browsers to only communicate with the site using HTTPS.
https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security
SSL Certificates
Get access to data on 39,283,282 websites HSTS Customers. We know of 28,438,160 live websites using HSTS and an additional 10,845,122 sites that used HSTS historically and 4,057,127 websites in the United States.
Get a list of 39,283,282 websites using HSTS which includes location information, hosting data, contact details, 28,438,160 currently live websites and an additional 4,529,393 domains that redirect to sites in this list. 10,845,122 sites that used this technology previouslyand 4,057,127 websites in the United States currently using HSTS.
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