A rate center is a geographically specific area used to determine the boundaries for local calling, billing, and assigning phone numbers. Typically a call within a rate center is local, while a call from one rate center to another is a long-distance call. Rate center boundaries do not necessarily align with the county or municipal boundaries.
The rate center is determined by the area code and prefix of a phone number.
If you find out that your number is not supported by a certain carrier, it's likely an issue with the rate center. Always check with your new provider first to ensure they can support the rate center of your phone number. You will find more helpful resources in the following article:
Can I port a number to any wireless provider?
Note: All US and Canadian carriers can only support numbers that are in their country of service.
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