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: PHLAPASLUMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
215-353 A Lansdale PA 7421 AT&T - LOCAL 228      
215-385 A Philadelphia Suburban Zone 39 PA 7421 AT&T - LOCAL 228      
215-469 A Philadelphia Suburban Zone 33 PA 7421 AT&T - LOCAL 228      
215-859 A Harleysville PA 7421 AT&T - LOCAL 228      
215-882 A Philadelphia Suburban Zone 38 PA 7421 AT&T - LOCAL 228      
610-463 A Reading PA 7421 AT&T - LOCAL 228      
610-573 A Allentown (Lehigh) PA 7421 AT&T - LOCAL 228      
610-686 A Catasauqua PA 7421 AT&T - LOCAL 228      
610-766 A Philadelphia Suburban Zone 23 PA 7421 AT&T - LOCAL 228      
610-772 A Philadelphia Suburban Zone 31 PA 7421 AT&T - LOCAL 228      
610-908 A Philadelphia Suburban Zone 30 PA 7421 AT&T - LOCAL 228      
610-984 A Bethlehem PA 7421 AT&T - LOCAL 228      

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

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