====== Internal DNS TLD ======

Officially, you can use the following internally
  * .test
  * .example
  * .invalid
  * .localhost

.local is used for mDNS (multicast DNS) so don't use it (though you will probably get away with using it if you are lucky).

[[https://www.icann.org/en/system/files/files/sac-045-en.pdf|SAC 045]] (see more info [[https://tools.ietf.org/id/draft-chapin-rfc2606bis-00.html|here]]) recommends that the list above be extended to include

Also [[https://www.rfc-editor.org/rfc/rfc6762|RFC 6762]].

  * .local
  * .localdomain
  * .domain
  * .host

  * .lan
  * .home
  * .corp
  * .intranet
  * .internal
  * .private


[[https://www.as112.net/|Project AS112]] resolves NSDOMAIN for private queries on the Internet.