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: 963

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-963 A Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-963 0 Frisco TX DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2008-08-28   
972-963 1 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-02-21   
972-963 2 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-963 3 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-06-24   
972-963 4 Frisco TX DLLSTXRIXPZ  7421 AT&T - LOCAL 552   2002-12-31   
972-963 5 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-963 6 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-02-21   
972-963 7 Frisco TX FRSCTXESDS0  9533 SOUTHWESTERN BELL 552   2002-10-01   
972-963 8 Frisco TX FRSCTXESDS0  9533 SOUTHWESTERN BELL 552   2002-10-01   
972-963 9 Frisco TX DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.