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: 655

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-655 A McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 0 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 1 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 2 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 3 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 4 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 5 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 6 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 7 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 8 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-655 9 McAllen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.