Area Code 443 Maryland, USA

WhereCall is here to provide you with the most information on the area code 443, located in Maryland, USA. This area code contains 799 prefixes and is in jeopardy of exceeding the known supply of central office codes during the planning/implementation interval for relief.

NPA Information
Area Code (NPA) 443
Location Maryland, USA
In Jeopardy? Yes
Is Assigned? Yes
In Service? Yes
In Service Date 01 Jun 1997
Parent NPA 410
Overlay Yes
Overlay Complex 410/443/667
Predominant Timezone(s) UTC-05:00
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