Simply insert the domain name or IP address. The utility asks the webserver for the HTTP headers. These headers aid in determining how a webserver publicly responds to a request.

What exactly are HTTP headers?

HTTP headers are HTTP responses or HTTP Status Codes that allow the client (browser) and server to provide additional information or data.

When a request is submitted to a server or a user attempts to visit a specific webpage, the HTTP response is the precise information returned in response to the request made on the webpage or website.

HTTP headers provide important information such as the server's software version, content type, HTTP connection, cookie settings, date and time, and so on. You can use HTTP response headers to call and inspect the HTTP headers that a certain server returned in response to your request for a specific URL or webpage.

Type of HTTP Status Codes

HTTP Status Codes are a few of the few standards that exist :

• 200 OK
  Having such Status Code indicates that everything is in order. The browser has located the requested URL, the web page has been returned, and everything is operating correctly.
• 403 Forbidden
  It's a little worrying to have that Status Code. That means the server denies the request, causing a stumbling block for Google bots, affecting your SEO. As a result, it would be preferable if you addressed the bug as soon as possible.
• 301 Moved Permanently
  The HTTP Status Code indicates that the URL has been permanently redirected. It implies that the URL has been modified and is now included in the response's location field.
• 404 Not Found
  Indicates that the requested webpage was not found on the web server and was deleted by the web administrator.
• 503 Server Is Temporarily Unavailable
  The HTTP Status Code indicates that there is a problem with the webserver or web host that must be resolved promptly.