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Phone Directory 510-307 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-307 Richmond, CA Pacific Bell Contra Costa Landline 02/04/1994

Other Series For Prefixes

510-3070###
510-3071###
510-3072###
510-3073###
510-3074###
510-3075###
510-3076###
510-3077###
510-3078###
510-3079###