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Phone Directory 301-857 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 857-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-857 Clear Spring, MD Core Communications Washington Landline 07/12/2002

Other Series For Prefixes

301-8570###
301-8571###
301-8572###
301-8573###
301-8574###
301-8575###
301-8576###
301-8577###
301-8578###
301-8579###