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: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
484-590 A Philadelphia Suburban Zone 26 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
484-590 3 Philadelphia Suburban Zone 26 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
484-590 5 Philadelphia Suburban Zone 26 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
484-590 6 Philadelphia Suburban Zone 26 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2021-07-17   
484-590 8 Philadelphia Suburban Zone 26 PA PHLAPAFGBMD  197D VONAGE AMERICA LLC 228   2022-07-08   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.