For those on iOS, you can block wildcard number ranges like this with Number Shield[0].

I have been receiving alot of these spoofed neighbor number calls, and this app saves me a lot of time and stress. You can also prevent it from blocking contacts that fall into your blocked number range.

0: https://itunes.apple.com/us/app/number-shield/id1319082167?m...

Most of the junk calls to my cell phone follow this formula. There doesn't seem to be anything to block the whole exchange. I'd be happy to do it. I don't actually live in the same city as my cell number so the odds that I'd be blocking someone who needed to reach me is pretty small.

Hiya on android will allow you to block numbers that start with a prefix, so you could block all calls that start with 604-233 604-232 and 604-234

But will it allow me to block all calls from 604-232 and 604-234 that are not in my contacts? Because I've noticed a similar trend where I get calls from numbers that begin with the same 6 numbers as my phone number.. but I have friends and family with phone numbers similar to mine and I don't want them blocked. Just ones not in my contacts list.

Edit: I read a review of Hiya and it sounds like they're still missing what we're all looking for: "Two things are missing. First, the ability to block all calls not in contacts. I have to download a separate app for that. Second, on inbound calls from the same area code (i.e., spoofed numbers) it does not pre-screen the call."