227 Rate Centers & Exchanges

8 rate centers · Maryland · Eastern 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 8 rate centers within area code 227.

Rate Center Locations

8 centers in area code 227

All Rate Centers in Area Code 227

Rate Center	Latitude	Longitude
Ashton	39.1508	-77.0225
Frederick	39.4183	-77.4091
Gaithersburg	39.1419	-77.2029
Waldorf	38.6255	-76.9044
Washington Zone 10	39.0855	-77.1599
Washington Zone 11	39.0248	-77.0778
Washington Zone 15 (Baltimore LATA)	38.8171	-76.7546
Washington Zone 2	38.9846	-77.1065

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