Go for the Boson utilities. www.boson.com -----Original Message----- From: Sam Varshavchik [mailto:mrsam@xxxxxxxxxxxxxxx] Sent: Saturday, November 20, 2004 5:53 PM To: For users of Fedora Core releases Subject: Re: CIDR calculator Joshua Andrews writes: > I am looking for a network calculator that will take input in the form of, > 67.160.0.0 : 67.191.255.255, and output the IP block in cidr > notation, 67.160.0.0/11. > > Is anyone aware of a tool in fedora 3 that will do that? Install Net::CIDR from CPAN.