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.

OCN: 7341 XO COMMUNICATIONS SERVICES, INC. - PA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
412-510 A Pittsburgh Zone 1 PA PITBPADTX9X  234      
412-510 0 Pittsburgh Zone 1 PA PITBPADTX9X  234   2017-04-23   
484-244 A Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 0 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 2 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 3 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 4 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 5 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 6 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-244 7 Allentown (Lehigh) PA PHLAPAFGDSS  228      
484-751 A Philadelphia Suburban Zone 30 PA PHLAPAFGDSS  228      
484-751 0 Philadelphia Suburban Zone 30 PA PHLAPAFGDSS  228      
484-751 1 Philadelphia Suburban Zone 30 PA PHLAPAFGDSS  228      
484-751 9 Philadelphia Suburban Zone 30 PA PHLAPAFGDSS  228      
570-561 A Scranton PA SCTNPASCXPY  232      
570-561 0 Scranton PA SCTNPASCXPY  232      
570-561 1 Scranton PA SCTNPASCXPY  232      
570-561 2 Scranton PA SCTNPASCXPY  232      
717-265 A Harrisburg City Zone-1 PA HRBGPAHA1MD  226      
717-265 0 Harrisburg City Zone-1 PA HRBGPAHA1MD  226      
717-265 2 Harrisburg City Zone-1 PA HRBGPAHA1MD  226      
724-803 A Avella PA PITBPADTX9X  234      
724-803 0 Avella PA PITBPADTX9X  234   2005-09-16   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.