I need an Out of state call blocker.

I have a local painting business in San Diego, and because my phone number is on the internet, I can get up to twelve spam calls from all over the country every day. I need a call blocker that can block all calls from out of state, or better yet, one where I can enter the area codes to let through while blocking all the others. It would have to send them to voicemail in case it is from someone moving in to the area.
Thank you for your help.

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I need an Out of state call blocker.