[TriLUG] OT: how can this URL resolve?

Joseph Mack NA3T jmack at wm7d.net
Fri Feb 3 15:21:55 EST 2006


On Fri, 3 Feb 2006, Christopher L Merrill wrote:

> I didn't think this was a legal URL without a top-level domain:
>  http://3400329509/

> pinging 3400329509, much to my suprise, resolved to
>  202.172.233.37

the url above is decimal for the dotted quad notation.

> Also, a whois lookup fails...so I'm assuming there is some numeric
> decoding applied by the network stack to turn it into an IP address...
> anyone know what that decoding is?

the dotted quad notation is for humans

Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml 
Homepage http://www.austintek.com/ It's GNU/Linux!



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