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Phone Directory 301-578 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-578 Silver Spring, MD Verizon Maryland Montgomery Landline 10/15/1996

Other Series For Prefixes

301-5780###
301-5781###
301-5782###
301-5783###
301-5784###
301-5785###
301-5786###
301-5787###
301-5788###
301-5789###