Comment Re:In other words (Score 1) 101
(plus as already mentioned,
".test" and ".invalid" are reserved, but for special purposes hence not for general private naming (see RFC 6761).
".home", ".corp", and ".mail" are not quite "guaranteed", but ICANN currently intends to "defer delegating [them] indefinitely". See section 5 of the "NAME COLLISION OCCURRENCE MANAGEMENT" document.