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2. List of Maryland area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_Maryland_area_codes

   The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667 The state of Maryland is served by the following area codes: Area codes

3. Area codes 410, 443, and 667 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_410,_443,_and_667

   The three area codes are overlay codes for one numbering plan area, among which 410 was the initial area code for the NPA, when it was split from area code 301 in 1991. 443 and 667 found assignment primarily in cellular service and for competitive local exchange carriers, such as Comcast and Cavalier Telephone, when introduced, but have since ...

4. Area codes 301, 240, and 227 - Wikipedia

   en.wikipedia.org/wiki/Area_codes_301,_240,_and_227

   Area code 301 was the first area code for all of Maryland, from 1947, when the area code system was created, until 1991, when everything from Baltimore eastward split off as area code 410. In 1997, area code 240 was added as an overlay area code for the 301 territory. On June 14, 2023, a third overlay code, 227, was added to provide more ...

5. Category:Area codes in Maryland - Wikipedia

   en.wikipedia.org/.../Category:Area_codes_in_Maryland

   List of Maryland area codes; 0–9. Area codes 301, 240, and 227; Area codes 410, 443, and 667

6. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

   www.aol.com/19-dangerous-scam-phone-numbers...

   Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...

7. List of North American Numbering Plan area codes - Wikipedia

   en.wikipedia.org/wiki/List_of_North_American...

   once reserved as a third area code for West Virginia, but it was replaced by a 304-932 exchange area code + exchange number in Charleston; 933: not in use; available for non-geographic assignment easily recognizable code (ERC) 934: New York (Suffolk County on Long Island) July 16, 2016: overlaid on 631; 935: not in use; available for geographic ...