Earlier quoted context omitted.
I moved across a border like 20 minutes away and got a new number - it is extremely common that both things change at the same time for people. It wasn’t a months old number or anything.
Wait, is this a mobile (cell) phone number? Why is this tied to where you live? In the UK you can take your mobile number with you between network providers and they're not tied to your location.
And I don't think this is unreasonable. The country code and phone number format is different (10 vs 8 numbers). Most non-spam calls I get are from somewhere else in Norway. I'm going to guess you could keep the same base number so long as the format is the same (between Canada and US, for example) - but that country code would still change