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: 402

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-402 A Pharr TX HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-402 0 Pharr TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2011-03-14   
956-402 1 Pharr TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2011-03-14   
956-402 2 Pharr TX   4866 SMARTCOM TELEPHONE, LLC 568   2016-01-24   
956-402 3 Pharr TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2011-08-20   
956-402 4 Pharr TX   4866 SMARTCOM TELEPHONE, LLC 568   2011-10-15   
956-402 5 Pharr TX   5562 METROPCS, INC. 568   2011-02-12   
956-402 6 Pharr TX   5562 METROPCS, INC. 568   2011-02-12   
956-402 7 Pharr TX   5562 METROPCS, INC. 568   2011-02-12   
956-402 8 Pharr TX   5562 METROPCS, INC. 568   2011-02-12   
956-402 9 Pharr TX   5562 METROPCS, INC. 568   2011-02-12   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.