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: ALTWPAMTDS0

Remotes:

Switch Switch name Switch type
HLTWPAHERS0  HELLERTOWN  5ER 
RGVLPARIRS0  RIEGELSVILLE  5ER 
SLTTPAESRS0  SLATINGTON  ORM 
SPTWPASPRS0  SPRINGTOWN  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
610-709 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-791 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-797 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-798 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      

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

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