Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: JCVLFLCL74Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
386-463 A Pomona Park FL 516C AT&T CORP. 45204      
904-203 A Middleburg FL 516C AT&T CORP. 45204      
904-274 A Maxville FL 516C AT&T CORP. 45204      
904-413 A Middleburg FL 516C AT&T CORP. 45204      
904-474 A Baldwin FL 516C AT&T CORP. 45204      
904-586 A Jacksonville FL 516C AT&T CORP. 45204      
904-672 A Jacksonville FL 516C AT&T CORP. 45204      
904-802 A Jacksonville FL 516C AT&T CORP. 45204      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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