[jakamau]

It's a bit of a low tech filter, but I intentionally selected a phone number with an unusual area code. It's an area code that I will most likely never travel to or do business with.

With the glut of spam calls that attempt to spoof local exchanges, whenever I see a phone call that uses my phone numbers area code and local exchange I know I can ignore it.

If I received a phone call from a geographically close region I can be relatively certain they have my phone number for a reason.