Comment by exikyut

Meta: I can't reach this website!

Chrome is giving me an instant NXDOMAIN error.

Dig shows that

  $ dig psdn.io @1.1.1.1
  ...
  ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19283
  ...
  ;; QUESTION SECTION:
  ;psdn.io.                       IN      A

so then I prefix "www." like is in the URL...

  $ dig www.psdn.io @1.1.1.1
  ...
  ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 64024
  ...
  ;; QUESTION SECTION:
  ;www.psdn.io.                   IN      A
  
  ;; ANSWER SECTION:
  www.psdn.io.            300     IN      CNAME   poseidon-www.pages.dev.

Okay, fine:

  $ dig poseidon-www.pages.dev @1.1.1.1
  ...
  ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 55471
  ...
  ;; QUESTION SECTION:
  ;poseidon-www.pages.dev.                IN      A

...wat??

(Where there's no ANSWER section, none was returned, just an AUTHORITY section)

This is reproducible for me with 1.1.1.1, 8.8.8.8 and 9.9.9.9.