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: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
484-458 A Philadelphia Suburban Zone 21 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
484-458 5 Philadelphia Suburban Zone 21 PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.