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Phone Directory 510-931 Detail

State Major City Time Zone
California San Jose Pacific

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Example: (510) 931-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-931 Hayward, CA O1 Communications Alameda Landline 07/22/1999

Other Series For Prefixes

510-9310###
510-9311###
510-9312###
510-9313###
510-9314###
510-9315###
510-9316###
510-9317###
510-9318###
510-9319###