SPF Usage Statistics · Download List of All Websites using SPF
The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.
HSTS Usage Statistics · Download List of All Websites using HSTS
Forces browsers to only communicate with the site using HTTPS.
HSTS IncludeSubdomains PreLoad Usage Statistics · Download List of All Websites using HSTS IncludeSubdomains PreLoad
This website includes instructions for HSTS loading that would allow it to be submitted to the HSTS preload list.
403 Error Usage Statistics · Download List of All Websites using 403 Error
The website returned a 403 Forbidden error message and wasn't identified as parked at the time. This does not mean we are not able to index technologies.
Apache Usage Statistics · Download List of All Websites using Apache
Apache has been the most popular web server on the Internet since April 1996.
Google Webmaster Usage Statistics · Download List of All Websites using Google Webmaster
Webmaster tools provide you with a free and easy way to make your site more Google-friendly.
Last technology detected on 12th July 2025. We know of 6 technologies on this page and 63 technologies removed from protodesign.net since 27th June 2017. Link to this page.
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