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Phone Directory 301-978 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 978-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-978 Gaithersburg, MD Verizon Maryland Montgomery Landline 10/11/1997

Other Series For Prefixes

301-9780###
301-9781###
301-9782###
301-9783###
301-9784###
301-9785###
301-9786###
301-9787###
301-9788###
301-9789###