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Phone Directory 510-921 Detail

State Major City Time Zone
California San Jose Pacific

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Example: (510) 921-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-921 Hayward, CA Teleport Communications Group - San Francisco Alameda Landline 04/15/1996

Other Series For Prefixes

510-9210###
510-9211###
510-9212###
510-9213###
510-9214###
510-9215###
510-9216###
510-9217###
510-9218###
510-9219###