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Phone Directory 203-603 Detail

State Major City Time Zone
Connecticut New Haven Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
203-603 New Haven, CT Southern New England Telephone Co. New Haven Landline 01/10/1996

Other Series For Prefixes

203-6030###
203-6031###
203-6032###
203-6033###
203-6034###
203-6035###
203-6036###
203-6037###
203-6038###
203-6039###