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: 484 [Rate centres in NPA 484] [Dial plan for NPA 484]

NXX: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
484-583 A Philadelphia Suburban Zone 26 PA   7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
484-583 0 Philadelphia Suburban Zone 26 PA   515J IP HORIZON LLC 228   2016-05-31   
484-583 1 Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2007-05-25   
484-583 2 Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2007-05-25   
484-583 3 Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2007-05-25   
484-583 4 Philadelphia Suburban Zone 26 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2016-03-23   
484-583 5 Philadelphia Suburban Zone 26 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2016-03-23   
484-583 6 Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2007-05-25   
484-583 7 Philadelphia Suburban Zone 26 PA PHLAPAMKXCX  318J COMCAST IP PHONE, LLC 228   2018-10-11   
484-583 8 Philadelphia Suburban Zone 26 PA WAYNPALADS3  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2007-05-25   
484-583 9 Philadelphia Suburban Zone 26 PA FTWSPAFWX2X  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2022-06-06   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.