<P> Area codes 410 , 443 , and 667 are telephone area codes serving the eastern half of the U.S. state of Maryland , including the Baltimore metropolitan area and the Eastern Shore . The 410 area code is the main area code , while the 443 and 667 codes are overlay codes . 443 and 667 were primarily used with cell phones and CLEC carriers such as Comcast or Cavalier Telephone when introduced but have since become universal in their carrier availability . </P>
<P> Area codes 410 , 443 , and 667 are telephone area codes serving the eastern half of the U.S. state of Maryland , including the Baltimore metropolitan area and the Eastern Shore . The 410 area code is the main area code , while the 443 and 667 codes are overlay codes . 443 and 667 were primarily used with cell phones and CLEC carriers such as Comcast or Cavalier Telephone when introduced but have since become universal in their carrier availability . </P>
where is area code 443 located in usa
where is area code 443 located in usa
the eastern half of the U.S. state of Maryland , including the Baltimore metropolitan area and the Eastern Shore
the eastern half of the U.S. state of Maryland , including the Baltimore metropolitan area and the Eastern Shore