But it does comply with WHATWG’s URL Standard, which declares the goal of obsoleting RFC 3986, providing something that’s actually robustly implementable, and r

But it does comply with WHATWG’s URL Standard, which declares the goal of obsoleting RFC 3986, providing something that’s actually robustly implementable, and reflecting reality. Some things do definitely try to follow RFC 3986 still, but my feeling is that it’s mostly legacy stuff, and the URL Standard is much more important these days. Though RFCs dealing with URLs will probably still cite it (e.g. RFC 9110, HTTP Semantics, June 2022). https://url.spec.whatwg.org/#host-parsing https://url.spec.whatwg.org/#host-parsing, follow step seven.