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Phone Directory 951-531 Detail

State Major City Time Zone
California Riverside Pacific

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
951-531 Ontario, CA Mpower Communications Corp San Bernardino Landline 12/13/2004

Other Series For Prefixes

951-5310###
951-5311###
951-5312###
951-5313###
951-5314###
951-5315###
951-5316###
951-5317###
951-5318###
951-5319###