[rp36]

Interestingly, Robocall algorithms use phone numbers closer to my phone number (either real of fake) and since I live in different Area code, it is much easier to block the numbers.

Though it is not recommended to pick up the phone, I have had some success by picking up the phone, wasting the agent's time and letting them know that my car is real old and would not need extended warranty.

[eeeeeeeeeeeee]

Same here, but unfortunately Apple provides no mechanism to do so. Even RoboKiller, a third party app, has limited success with neighborhood spoofing, as it’s called.

I’m perfectly fine with blocking the entire NNN beginning prefix of my number but there appears to be no way to do it (they can only do NNN-NNNN). RoboKiller says it’s a limitation in the iOS API they have access to.

[cheerlessbog]

That is interesting. I looked at my missed calls and they are all either my local area code or 866. It makes me want to swap my mobile number for one from, say, Hawaii, which I doubt I ever get a legitimate call from, then filter out that area code. Looks like it might work.