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Phone Directory 925-231 Detail

State Major City Time Zone
California Oakland Pacific

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Example: (925) 231-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
925-231 Martinez, CA Level 3 Communications Contra Costa Landline 05/10/1999

Other Series For Prefixes

925-2310###
925-2311###
925-2312###
925-2313###
925-2314###
925-2315###
925-2316###
925-2317###
925-2318###
925-2319###