Re: [FWP] Recursion, anyone?

[pmh@edison.ioppublishing.com]

On Thu, 12 Apr 2001 08:50:02 -0300, Filipe Brandenburger wrote:
> At 11:17 PM 11/04/2001 +0100, Ian Phillipps wrote:
> > From RFC 1034:
> >
> ><domain> ::= <subdomain> | " "
> ><subdomain> ::= <label> | <subdomain> "." <label>
> ><label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
> ><ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
> ><let-dig-hyp> ::= <let-dig> | "-"
> ><let-dig> ::= <letter> | <digit>
> ><letter> ::= any one of the 52 alphabetic characters A through Z in
> >     upper case and a through z in lower case
> ><digit> ::= any one of the ten digits 0 through 9
> >
> >So, the answer that 'A--' is legal.
> >And www.f--k.com exists, and for sale...
> 
> As I see by the definition of <label>, only names starting with a letter 
> and ending with a letter or a digit are legal, so 'A--' is legal, but 
> 'A--B' or 'A--0' are legal. I think I've seen some domain names starting 
> with a number, but I should be wrong. Anyone ever seen one of these?

There are loads of them, including some with only numbers, like 10.am and www.31338.net.

As I said to Abigail when I forgot to reply to the group:
This part of the RFC seems to be followed more in spirit than to the letter.
Well, the spirit that says, "actually, just ignore this bit, and use what you
like."

-- 
	Peter Haworth	pmh@edison.ioppublishing.com
"I was claiming to be Satan, and explaining some of my actions. This should
 give you a slight clue that I may not be presenting a researched thesis."
	-- Paul David Jones

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