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: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-401 A Tripoli IA CDRRIADTUMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635      
319-401 6 Tripoli IA CDRRIADTUMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2023-05-19   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.