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Phone Directory 510-856 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-856 Hayward, CA Allegiance Telecom Alameda Landline 06/13/2000

Other Series For Prefixes

510-8560###
510-8561###
510-8562###
510-8563###
510-8564###
510-8565###
510-8566###
510-8567###
510-8568###
510-8569###