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: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 490

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-490 A Harlingen TX   5562 METROPCS, INC. 568      
956-490 6 Harlingen TX HRLNTXKX7MD  5562 METROPCS, INC. 568      
956-490 7 Harlingen TX HRLNTXKX7MD  5562 METROPCS, INC. 568      
956-490 8 Harlingen TX HRLNTXKX7MD  5562 METROPCS, INC. 568      
956-490 9 Harlingen TX   4290 STPCS JOINT VENTURE, LLC 568      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.