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: 610 [Rate centres in NPA 610] [Dial plan for NPA 610]

NXX: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-728 A Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 0 Philadelphia Suburban Zone 29 PA   547E ONVOY, LLC - PA 228   2004-08-27   
610-728 1 Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 2 Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 3 Philadelphia Suburban Zone 29 PA   547E ONVOY, LLC - PA 228   2004-08-27   
610-728 4 Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 5 Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 6 Philadelphia Suburban Zone 29 PA PHLBPAMYDS4  5494 NETCARRIER TELECOM, INC. - PA 228   2002-04-28   
610-728 7 Philadelphia Suburban Zone 29 PA   547E ONVOY, LLC - PA 228   2004-08-27   
610-728 8 Philadelphia Suburban Zone 29 PA PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-728 9 Philadelphia Suburban Zone 29 PA PHLAPAMKX4X  624H ONVOY SPECTRUM, LLC 228   2021-11-05   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.