How do I block certain area codes from my home phone?

I have AT%26amp;T and do not want to find all the numbers I need blocked. So, can I just have it this way? What will it say to the caller?How do I block certain area codes from my home phone?
If you want to block numbers or area codes from your home phone, you will need Caller ID.. Then buy a Privacy Manager, (such as one offered by Digitone.) You can block all the numbers you want. Your phone will not even ring when they try to call.. No monthly charge. I believe the unit sells for around $99.00....How do I block certain area codes from my home phone?
It won't say anything, because you have no wildcard blocking on AT%26amp;T.

la mer