To use:
require ‘net-dns-rbl’
ipCheck = Net::Dns::Rbl::Netchecker.new(‘ip_address_here’) listings = ipCheck.performLookups
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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