Help: restriction to name a domain

[Barry Margolin]

In article <Pine.LNX.4.04.9910081620390.6226-100000 at guangbin.interland.net>,
 <bind at guangbin.interland.net> wrote:
>What's the valid character set of hostname and domain name? Is there any
>special requirement for the selection of the first chracter in the
>hostname or domain name? Can "_", "-", ",", "'", "&", "#" be used in the
>hostname or domain name?

Letters, digits, and hyphen ('-') are the only valid characters, and hyphen
can't be the first or last character of any component.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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