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Phone Directory 510-283 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-283 El Sobrante, CA Allegiance Telecom Contra Costa Landline 06/30/2001

Other Series For Prefixes

510-2830###
510-2831###
510-2832###
510-2833###
510-2834###
510-2835###
510-2836###
510-2837###
510-2838###
510-2839###