CLI IP range lookup tool

[Jon Stanley]

On 12/21/07, Ashley M. Kirchner <ashley at pcraft.com> wrote:
>
>     Is there a command line tool that can get me from '123.235.126.232'
> to '123.232.0.0/14' or even to '123.232.0.0:123.235.255.255'?

I use aggis (http://www.lafferty.ca/files/software/aggis) - it's about
10-15 years old, but I've not had a problem making it work with a
modern version of perl.  It has lots of features and does exactly what
you want it to do and more.