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: 505 [Rate centres in NPA 505] [Dial plan for NPA 505]

NXX: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-339 A Gallup NM ALBRNMFE5MD  6529 T-MOBILE USA, INC. 664      
505-339 0 Gallup NM   5562 METROPCS, INC. 664   2014-11-09   
505-339 1 Gallup NM   6529 T-MOBILE USA, INC. 664   2025-11-02   
505-339 2 Gallup NM   5470 LEVEL 3 COMMUNICATIONS, LLC - NM 664   2014-08-29   
505-339 3 Gallup NM   508J CENTURYLINK COMMUNICATIONS, LLC 664   2016-02-23   
505-339 4 Gallup NM   6529 T-MOBILE USA, INC. 664   2015-02-14   
505-339 5 Gallup NM   6529 T-MOBILE USA, INC. 664   2015-01-09   
505-339 6 Gallup NM   6529 T-MOBILE USA, INC. 664   2014-09-27   
505-339 7 Gallup NM   6529 T-MOBILE USA, INC. 664   2014-09-27   
505-339 8 Gallup NM   6529 T-MOBILE USA, INC. 664   2014-08-14   
505-339 9 Gallup NM   6529 T-MOBILE USA, INC. 664   2014-07-21   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.