On Sun July 3 2005 11:43, Tony Finch wrote:
On Sat, 2 Jul 2005, Claus Assmann wrote:
How do you know it's not a domain? Do you perform a DNS lookup?
See the discussion in RFC 1123 section 2.1: "a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the highest-level
component label will be alphabetic."
True, at least to the present... See RFC 3696 (where the top-level
is not numeric 1123 reference is also mentioned); if ICANN goes
crazy, that rule might not apply in the future.