On Mon, Jun 02, 2003 at 01:09:13PM +0900,
 henry nelson <netb@irm.nara.kindai.ac.jp> wrote 
 a message of 14 lines which said:

> I'd like to use domain names to identify what/where the network is, but
> I'd rather not use things like .edu or .ac.xx (xx = some country's
> abbreviation).  Are there suffixes to domain names that are reserved for
> internal networks 

Partially, see RFC 2606 :

   To safely satisfy these needs, four domain names are reserved as
   listed and described below.

                   .test
                .example
                .invalid
              .localhost

      ".test" is recommended for use in testing of current or new DNS
      related code.

      ".example" is recommended for use in documentation or as examples.

      ".invalid" is intended for use in online construction of domain
      names that are sure to be invalid and which it is obvious at a
      glance are invalid.

      The ".localhost" TLD has traditionally been statically defined in
      host DNS implementations as having an A record pointing to the
      loop back IP address and is reserved for such use.  Any other use
      would conflict with widely deployed code which assumes this use.