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Phone Directory 510-957 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-957 San Francisco, CA Allegiance Telecom San Francisco Landline 05/10/1999

Other Series For Prefixes

510-9570###
510-9571###
510-9572###
510-9573###
510-9574###
510-9575###
510-9576###
510-9577###
510-9578###
510-9579###