443 Rate Centers & Exchanges
18 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 18 rate centers within area code 443.
Rate Center Locations
18 centers in area code 443All Rate Centers in Area Code 443
| Rate Center |
|---|
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Aberdeen
|
|
Annapolis
|
|
Baltimore
|
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Bel Air
|
|
Brooklyn Park-Linthicum
|
|
Catonsville
|
|
Chestertown
|
|
Elkridge
|
|
Ellicott City
|
|
Essex
|
|
Glen Burnie
|
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Pikesville
|
|
Salisbury
|
|
Sykesville
|
|
Towson
|
|
Waterloo
|
|
Westminster
|
|
Woodlawn
|