I have a weird problem and I don't know how to fix it or tell how much of a problem it is.

My primary number is a Google Voice number. At the time I registered it, I wasn't aware of the location the number was "registered" or whatever you'd call it. Turns out that it supposedly belongs to this area, which is 30 miles from this area, where I live.

Until recently, I had never known there was a problem with this number. Most people using cell phones don't ever have to worry about whether something is considered "long distance." Kids today probably don't even know of a distinction. But I've had people from my area tell me that when they tried calling me on their landlines, they get that old phone company error of "your call cannot be completed as dialed." Unfortunately, they aren't told to try adding a "1" to the beginning of the number, which would fix it.

I don't think there's any way to fix this. How do I tell where the end of the local calling area is for my number? Is it possible?
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Matt