Put all those numbers into a spreadsheet and study to see what area codes you can block, then you can delete all the numbers in that area code. Some scammers spoof numbers with a non-existent area code.
The area code for Washington, DC - "202" is a favorite of the fake IRS agents, but if you have need to communicate with anyone there it's not simple as there are millions of possible numbers.
This number has been calling me every morning for about a week now. I don't answer strange numbers like this because it's usually some robocall nonsense, they never leave a voice mail either. It's a shame the DNC can't put a stop to this garbage.
This number 614-398-4313 calls at least once a week is and always listed as anonymous. I will not answer a phone call from an unknown person/company that never leaves a message, and if it's any legitimate company, the anonymous title gives it an unreputable feeling.