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: 490

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-490 A Cedar Falls IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-06-20   
319-490 0 Cedar Falls IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2024-06-20   
319-490 1 Cedar Falls IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2024-08-29   
319-490 2 Cedar Falls IA DESMIADTX1X  624H ONVOY SPECTRUM, LLC 635   2024-12-19   
319-490 3 Cedar Falls IA   5562 METROPCS, INC. 635   2025-04-25   
319-490 4 Cedar Falls IA   5562 METROPCS, INC. 635   2025-04-25   
319-490 8 Cedar Falls IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2024-08-29   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.