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Phone Directory 925-405 Detail

State Major City Time Zone
California Oakland Pacific

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Example: (925) 405-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
925-405 Concord, CA Allegiance Telecom Contra Costa Landline 07/22/1999

Other Series For Prefixes

925-4050###
925-4051###
925-4052###
925-4053###
925-4054###
925-4055###
925-4056###
925-4057###
925-4058###
925-4059###