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: ALTWPAALDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
484-505 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
484-664 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-432 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-433 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-434 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-435 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-437 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-439 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-508 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-606 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-663 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-712 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-740 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-770 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-774 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-776 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-778 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-782 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-820 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-821 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      
610-969 A Allentown (Lehigh) PA 9208 VERIZON PENNSYLVANIA, INC. 228      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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