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Phone Directory 510-256 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-256 Walnut Creek, CA O1 Communications Contra Costa Landline 06/30/2001

Other Series For Prefixes

510-2560###
510-2561###
510-2562###
510-2563###
510-2564###
510-2565###
510-2566###
510-2567###
510-2568###
510-2569###