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.

De Soto (Ovilla), TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-217 A DLLSTXDSDS0  9533 SOUTHWESTERN BELL 552      
972-217 0 DLLTTXID1MD  5562 METROPCS, INC. 552   2006-08-28   
972-217 1 DLLSTXDSDS0  9533 SOUTHWESTERN BELL 552      
972-217 2 DLLTTXID1MD  5562 METROPCS, INC. 552   2008-03-09   
972-217 3 DLLSTXRIZMD  793K TWC IP ENABLED SERVICES, LLC 552   2006-12-06   
972-217 4 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2012-12-14   
972-217 5 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-07-19   
972-217 6 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-07-19   
972-217 7 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2008-07-11   
972-217 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2008-09-20   
972-217 9 DLLTTXID1MD  5562 METROPCS, INC. 552   2007-07-19   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.