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Phone Directory 301-339 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 339-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-339 Rockville, MD Cavalier Telephone Mid-atlantic Montgomery Landline 10/11/1997

Other Series For Prefixes

301-3390###
301-3391###
301-3392###
301-3393###
301-3394###
301-3395###
301-3396###
301-3397###
301-3398###
301-3399###