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.

NPA: 412 [Rate centres in NPA 412] [Dial plan for NPA 412]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
412-256 A Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 0 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 1 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 2 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 3 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 4 Pittsburgh Zone 4 PA   3806 CORE COMMUNICATIONS, INC. - PA 234      
412-256 5 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 6 Pittsburgh Zone 4 PA WKBGPAWKRP1  9208 VERIZON PENNSYLVANIA, INC. 234      
412-256 7 Pittsburgh Zone 4 PA   3806 CORE COMMUNICATIONS, INC. - PA 234      
412-256 8 Pittsburgh Zone 4 PA PITBPADTX2Z  002F BANDWIDTH.COM CLEC, LLC - PA 234      
412-256 9 Pittsburgh Zone 4 PA PITBPAFHDS0  7978 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 234      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.