How to use dig with an ip list

Paul Schmehl pauls at
Tue Aug 19 02:32:26 UTC 2008

I know I'm missing the obvious.  I want to use an IP list to generate an 
ip+hostname list.  IOW, I want to go from this:


to this;

x.x.x.x foo.domain.tld
y.y..y.y bar.domain.tld

What's the best/easiest way to do this?

Paul Schmehl (pauls at
Senior Information Security Analyst
The University of Texas at Dallas

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