[TriLUG] OT: how can this URL resolve?

[Brian Henning]

It's just a concatenation of the octets.
207.172.233.37 = 1100 1010.1010 1100.1110 1001.0010 0101
  ...
                  1100 1010 1010 1100 1110 1001 0010 0101 = 3400329509

~B


Christopher L Merrill wrote:
> I didn't think this was a legal URL without a top-level domain:
>   http://3400329509/
> but it worked in my browser
> (the whole URL was http://3400329509/paypal.com/us/cgi-bin/index.php,
> the site for a paypal scammer in Indonesia)
> 
> pinging 3400329509, much to my suprise, resolved to
>   202.172.233.37
> 
> nslookup resulted in:
>   $ nslookup 3400329509
>   Server:  rlghnc-dns-cac-06.nc.rr.com
>   Address:  24.25.5.51
>   *** rlghnc-dns-cac-06.nc.rr.com can't find 3400329509: Non-existent 
> domain
> 
> 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?
> 

-- 
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Brian A. Henning
strutmasters.com
336.597.2397x238
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