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: WAYNPALADS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
484-243 A Philadelphia Suburban Zone 31 PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
484-254 A Philadelphia Suburban Zone 26 PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
484-488 A Catasauqua PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
484-618 A Philadelphia Suburban Zone 28 PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
484-624 A Pottstown PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-295 A Allentown (Lehigh) PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-297 A Bethlehem PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-333 A Easton PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-503 A Philadelphia Suburban Zone 26 PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-531 A Philadelphia Suburban Zone 30 PA 7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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