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Phone Directory 925-521 Detail

State Major City Time Zone
California Oakland Pacific

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Example: (925) 521-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
925-521 Concord, CA Pacific Bell Contra Costa Landline 10/13/1999

Other Series For Prefixes

925-5210###
925-5211###
925-5212###
925-5213###
925-5214###
925-5215###
925-5216###
925-5217###
925-5218###
925-5219###