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: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
505-557 A Santa Fe NM ALBRNMFE5MD  6529 T-MOBILE USA, INC. 664      
505-557 0 Santa Fe NM   5562 METROPCS, INC. 664   2016-02-14   
505-557 1 Santa Fe NM   206F ONVOY, LLC - NM 664   2016-03-04   
505-557 2 Santa Fe NM   206F ONVOY, LLC - NM 664   2016-03-04   
505-557 3 Santa Fe NM   206F ONVOY, LLC - NM 664   2016-02-26   
505-557 4 Santa Fe NM   206F ONVOY, LLC - NM 664   2016-02-26   
505-557 5 Santa Fe NM   6529 T-MOBILE USA, INC. 664   2016-03-31   
505-557 6 Santa Fe NM   318J COMCAST IP PHONE, LLC 664   2016-04-19   
505-557 7 Santa Fe NM   6529 T-MOBILE USA, INC. 664   2016-05-06   
505-557 8 Santa Fe NM   5562 METROPCS, INC. 664   2016-03-24   
505-557 9 Santa Fe NM   6529 T-MOBILE USA, INC. 664   2016-02-13   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.