Valid DNS Characters

[Barry Margolin]

In article <919C0B49208AD211987A006094EA36147E3305 at nbsjexm1.nbtel.nb.ca>,
Nyborg, Dana <dana.nyborg at nbtel.nb.ca> wrote:
>I have been unsuccessful in finding the RFC which details which details
>which characters are valid for DNS operation.  Could someone point me in the
>right direction.  I understand that an underscore ( _ ) is not a truly valid
>character.  Is this true.

RFC 952 as amended by RFC 1123.

In a nutshell, labels can contain letters, numbers, and hyphens, and may
not start with a hyphen.  Periods are used to separate labels in a domain
name.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
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