I did look at Blacklist, but it appears this is for inbound. I need to block certain outbound calls. I do have this working under "Misc Applications", but the problem is I can only block a whole number at a time. It would be a huge bonus if I could block prefix such as 00372xxxxxxx etc.
Use outbound routes but send the calls to a "bogus" trunk, they will get a "call cannot be completed " message, or more completely, build a loop-back trunk to 127.0.0.1 and have those calls go through that trunk and then return to the destination of your choice, through a corollary inbound route, perhaps a recording stating they will be fired if they try that again
The loopback trunk might look as simple as:-
trunk description: loopback
trunk name: loopback
user context: loopback