I'm not a Tech Rep here but I have had their service for years and haven't seen a way other than using a number, of which it does not work with "Local Spoofing" as you are describing. But now that you turned on and hopefully got all set up with NoMoRobo one thing you will need to do is bookmark the NMR page to submit numbers that you are having problems with, even though they may be Local Spoofing. This help them, help us. I turned it on in the early day of the release and my SPAM calls are almost 0. Good Luck and get familiar with the NoMoRobo site.