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.

Irving, TX

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-785 9   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-786 A DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 0   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 1   5562 METROPCS, INC. 552   2006-03-26   
972-786 2   5562 METROPCS, INC. 552   2005-06-01   
972-786 3   5562 METROPCS, INC. 552   2004-11-19   
972-786 4   5562 METROPCS, INC. 552   2004-11-19   
972-786 5   5562 METROPCS, INC. 552   2004-11-19   
972-786 6   5562 METROPCS, INC. 552   2004-10-04   
972-786 7   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 8   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 9   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-790 A IRNGTXXDDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-793 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-04-30   
972-793 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 2   5562 METROPCS, INC. 552   2007-07-19   
972-793 3   5562 METROPCS, INC. 552   2007-07-19   
972-793 4   5562 METROPCS, INC. 552   2007-07-19   
972-793 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 7   903C ONVOY, LLC - TX 552   2008-07-03   
972-793 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2008-05-19   
972-793 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-812 A   903C ONVOY, LLC - TX 552      
972-815 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-815 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-815 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2007-09-17   
972-815 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-815 3   5562 METROPCS, INC. 552   2006-08-28   
972-815 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-815 5   5562 METROPCS, INC. 552   2006-08-28   
972-815 6   5562 METROPCS, INC. 552   2006-08-28   
972-815 7   5562 METROPCS, INC. 552   2006-08-28   
972-815 8   5562 METROPCS, INC. 552   2006-08-28   
972-815 9   5562 METROPCS, INC. 552   2006-08-28   
972-817 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-817 0   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-08-20   
972-817 1   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-08-20   
972-817 2   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 3   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 4   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 5   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 6   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 7   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 8   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-817 9   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2016-09-11   
972-819 A DLLBTXPVDS0  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 0   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 1   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 2   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 3   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 4   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 5   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 6   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 7   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 8   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-819 9   903C ONVOY, LLC - TX 552   2011-03-09   
972-821 A DLLTTX01DMD  5562 METROPCS, INC. 552      
972-821 0   5562 METROPCS, INC. 552   2019-07-12   
972-821 1   5562 METROPCS, INC. 552   2005-05-20   
972-821 2   5562 METROPCS, INC. 552   2005-05-20   
972-821 3   5562 METROPCS, INC. 552   2006-01-13   
972-821 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2004-12-17   
972-821 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2004-12-17   
972-821 6   5562 METROPCS, INC. 552   2005-02-18   
972-821 7   5562 METROPCS, INC. 552   2005-02-18   
972-821 8   5562 METROPCS, INC. 552   2005-02-18   
972-821 9   5562 METROPCS, INC. 552   2005-02-18   
972-823 A   903C ONVOY, LLC - TX 552      
972-823 0   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 1   903C ONVOY, LLC - TX 552      
972-823 3   903C ONVOY, LLC - TX 552      
972-823 4   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 5   903C ONVOY, LLC - TX 552      
972-823 6   903C ONVOY, LLC - TX 552   2026-01-10   
972-823 7   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 8   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 9   903C ONVOY, LLC - TX 552      
972-827 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-827 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-827 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-827 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-827 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-827 4   903C ONVOY, LLC - TX 552   2023-01-15   
972-827 5   5562 METROPCS, INC. 552   2007-06-18   
972-827 6   5562 METROPCS, INC. 552   2007-06-18   
972-827 7   004F BANDWIDTH.COM CLEC, LLC - TX 552   2009-11-20   
972-827 8   004F BANDWIDTH.COM CLEC, LLC - TX 552   2009-11-20   
972-827 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-870 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-871 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-887 A IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 1   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 3   793K TWC IP ENABLED SERVICES, LLC 552   2007-02-21   
972-887 4   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 5   793K TWC IP ENABLED SERVICES, LLC 552   2007-10-15   
972-887 6   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.