[TriLUG] OT: how can this URL resolve?

Christopher J. Knowles chrisk at trilug.org
Fri Feb 3 15:29:37 EST 2006


I'm more interested in which browser this worked in... I've tried it in IE, 
Mozilla-Firefox, Mozilla, and Konqueror, none of them worked.

CJK

On Friday 03 February 2006 15:16, 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?
>
> --
> -------------------------------------------------------------------------
> Chris Merrill                  |  http://www.webperformance.com
> Web Performance Inc.
>
> Website Load Testing and Stress Testing Software
> -------------------------------------------------------------------------



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