301 Rate Centers & Exchanges
17 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 17 rate centers within area code 301.
Rate Center Locations
17 centers in area code 301All Rate Centers in Area Code 301
| Rate Center |
|---|
|
Ashton
|
|
Brandywine
|
|
Frederick
|
|
Gaithersburg
|
|
Hagerstown
|
|
Indian Head
|
|
Keedysville
|
|
Lexington Park-Great Mills
|
|
Washington Zone 10
|
|
Washington Zone 11
|
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Washington Zone 13
|
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Washington Zone 14
|
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Washington Zone 15
|
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Washington Zone 2
|
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Washington Zone 3
|
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Washington Zone 4
|
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Washington Zone 5
|