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: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-375 A Grand Prairie TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-375 0 Grand Prairie TX DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-375 1 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-07-05   
972-375 2 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2006-03-11   
972-375 3 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2005-02-06   
972-375 4 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-375 5 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-375 6 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-375 7 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-375 8 Grand Prairie TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-05-16   
972-375 9 Grand Prairie TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-08-18   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.