To use:

require ‘net-dns-rbl’

ipCheck = Net::Dns::Rbl::Netchecker.new(‘ip_address_here’) listings = ipCheck.performLookups

• Returns nil if not listed

To add more lists: ipCheck.addToLists(‘list_address_here’) To remove lists: ipCheck.removeFromLists(‘list_address_here’) To see current lists you are checking against: ipCheck.showCurrentLists