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Phone Directory 510-842 Detail

State Major City Time Zone
California San Jose Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
510-842 San Francisco, CA Allegiance Telecom San Francisco Landline 10/13/1999

Other Series For Prefixes

510-8420###
510-8421###
510-8422###
510-8423###
510-8424###
510-8425###
510-8426###
510-8427###
510-8428###
510-8429###