Currently, you're polluting the discussion for this submission by continuing to post in the subthread of an already-flagged comment.
Please stop.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Status
You want to bring up pollution, what about the plethora of http status reference sites we already have. At least OP kept it to CLI. It’d be nice if it sourced it from Mozilla so it wouldn’t need updating.
MDN is also third-party, thus equally unofficial. The official sources are IANA and IETF.
The quality is objectively worse compared with webconcepts. It's not immediately visible where a status code originates from, and when you follow through to the detail document, you can see that the outdated RFC 2616 is referenced.
The choice of top-level domain has zero significance, as I said previously, the only measure of official(?:ness|ity) is where the information originates from.