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Phone Directory 510-257 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-257 Fremont, CA Teleport Communications Group - San Francisco Alameda Landline 01/14/2000

Other Series For Prefixes

510-2570###
510-2571###
510-2572###
510-2573###
510-2574###
510-2575###
510-2576###
510-2577###
510-2578###
510-2579###