my problem is for a Firefox extension. I can't find a way to retrieve the IP address of the website loaded on a page in Firefox. However, the data exists:

Network Monitor ⇾ Header ⇾ Get

I have seen solutions with dns.resolve or through external websites, but it is not reliable in case of CDN as with Google for example.

I hope you can help me.

Edit: Up, solution to get the header of the request in JavaScript ?