Crossposted from https://lemmy.blahaj.zone/post/48779421

I'm writing a program that can find info about a phone number. One problem appears to be that Google's phone number library doesn't provide enough info. For instance, take this number: +1 (613) 745-1576. My iPhone correctly says "Ottawa, Ontario, Canada", while Google's library doesn't return the city? How does my iPhone pick this up but not Google's own library? Is this provided by cell carriers? Is it something with the 745 block? If so, where can I find this info?

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[–] 5 points 14 hours ago

There are some charts that list prefixes by area code and what areas they traditionally mean

For example for area code 613 https://wetmore.ca/TelephonePrefixes.pl?A=613

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