Can I block incoming calls using wildcard patterns? Recently I have been getting a few unwanted telemarketing calls, all coming from the same source. Each number though is different at the end.

For instance, if the numbers to be blocked are: 


123-4567
123-7642
123-8643


It would be convenient for the future to simply block with a wildcard, such as:


123-*


Is this at all possible?
WideProtect is a pretty simple app for exactly this purpose
https://itunes.apple.com/app/wideprotect/id1171024059

It allows for specifying a wildcard pattern to block numbers, like 609-***-****. At the minimum it requires the first three digits so you should be able to block entire states with this.