SLD starting with digit (or containing only digits)

>   From woeber at cc.univie.ac.at Fri Oct 10 13:51:53 1997

Thanks to all who answered me. I am still confused, because the
RFCs seem to be somewhat in contradiction with each other.

The RFC1912 says:

   (Labels were initially restricted in [RFC 1035] to start with
   a letter, and some older hosts still reportedly have problems with
   the relaxation in [RFC 1123].)  Note there are some Internet
   hostnames which violate this rule (411.org, 1776.com).

On the other hand RFC1123 says:

           If a dotted-decimal number can be entered without such
           identifying delimiters, then a full syntactic check must be
           made, because a segment of a host domain name is now allowed
           to begin with a digit and could legally be entirely numeric
           (see Section 6.1.2.4).  However, a valid host name can never
           have the dotted-decimal form #.#.#.#, since at least the
           highest-level component label will be alphabetic.

This is in my view in contradiction with the last sentence quoted by me
from RFC1912...

[ More than that, RFC2181, which obsolates RFC1123, basically says
that the DNS should be able to handle any binary string as a domain
name (with the length limitations that apply). However, it emphasizes
that the applications may impose restrictions on this... 
I am curious when will *.com be registered? :)) ]

Janos