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Phone Directory 510-854 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-854 El Sobrante, CA O1 Communications Contra Costa Landline 05/17/2001

Other Series For Prefixes

510-8540###
510-8541###
510-8542###
510-8543###
510-8544###
510-8545###
510-8546###
510-8547###
510-8548###
510-8549###