HTTP Upgrade Header - HTTP/2
Download List of All Websites using HTTP Upgrade Header - HTTP/2
The HTTP Upgrade mechanism is used to establish HTTP/2 starting from plain HTTP. The client starts an HTTP/1.1 connection and sends an Upgrade: h2c header. If the server supports HTTP/2, it replies with HTTP 101 Switching Protocol status code. The HTTP Upgrade mechanism is used only for cleartext HTTP2 (h2c). In the case of HTTP2 over TLS (h2), the ALPN TLS protocol extension is used instead.
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HSTS - Browser HTTPS Only
Download List of All Websites using HSTS - Browser HTTPS Only
The HTTP Strict-Transport-Security response header (often abbreviated as HSTS) lets a web site tell browsers that it should only be accessed using HTTPS, instead of using HTTP for 300 seconds
Meta keywords
Download List of All Websites using Meta keywords
Meta keywords are types of meta tags in the HTML source code of a webpage. They describe the content of a website shortly and concisely,this website is using the following keywords: third angels messsage,faith of jesus,mark of the beast,worship him,gospel,babylon is fallen,three angels,david barron,seal of god,revelation 14,144000
No Cache Content
Download List of All Websites using No Cache Content
Forces caches to submit the request to the origin server for validation before releasing a cached copy.
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