628 Rate Centers & Exchanges
4 rate centers · California · Pacific Time
A rate center is the geographic unit used by phone carriers to determine local calling areas and billing. Each rate center has a specific name and set of NXX exchanges (the 3-digit prefix after the area code) assigned to it. The map below shows the 4 rate centers within area code 628.
Rate Center Locations
4 centers in area code 628All Rate Centers in Area Code 628
| Rate Center |
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San Francisco: Central DA
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San Francisco: Juniper DA
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San Francisco: Montrose-Evergreen DA
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San Rafael
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