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.

Switch: PHLAPAFGXOY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
445-338 A Philadelphia Suburban Zone 42 PA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 228   2026-03-26   
445-338 2 Philadelphia Suburban Zone 42 PA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 228   2026-03-26   
445-338 3 Philadelphia Suburban Zone 42 PA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 228   2026-03-26   
472-998 2 Pinehurst NC 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 949   2026-03-30   
472-998 3 Pinehurst NC 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 949   2026-03-30   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.