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: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-343 A Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 0 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 1 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 2 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 3 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 4 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 5 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 6 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 7 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      
972-343 8 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-343 9 Grand Prairie TX DLLSTXMCDS0  9533 SOUTHWESTERN BELL 552      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.