Security Basics mailing list archives

Re[2]: IP address allocation


From: Terry <tech () futurecourse com>
Date: Thu, 31 Jul 2003 20:35:48 +0100

On Thursday, July 31, 2003 at 4:52 PM, Scott wrote:

This is totally up to the ISP itself.  They may have had the block
previously allocated to something else that they did reverse DNS for.

They may also do reverse DNS for sanity sake.  Lots of ISPs give a
location and other information as to where the IP is allocated.  For
instance, comcast has: 68.82.4.14

This IP resolves back to

pcp01631289pcs.tybout01.de.comcast.net

the de signifies that the IP is in Delaware.  I don't know the rest but it
helps them identify the region that the IP is allocated.


Hi Scott,

Thanks for the reply.  That is what the records appear to be.

-- 
Terry


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