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.
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Switch: IRNGTXXBXTY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
945-455 3 Irving TX 903C ONVOY, LLC - TX 552   2022-03-11   
945-455 4 Irving TX 903C ONVOY, LLC - TX 552   2022-03-11   
945-523 A Carrollton TX 903C ONVOY, LLC - TX 552      
945-523 2 Carrollton TX 903C ONVOY, LLC - TX 552   2023-05-22   
945-523 3 Carrollton TX 903C ONVOY, LLC - TX 552   2023-07-03   
945-523 4 Carrollton TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-523 5 Carrollton TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-523 7 Carrollton TX 903C ONVOY, LLC - TX 552   2023-07-21   
945-800 1 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 3 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 4 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 6 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 7 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 9 Plano TX 903C ONVOY, LLC - TX 552   2021-08-13   
945-810 A Irving TX 903C ONVOY, LLC - TX 552      
945-810 6 Irving TX 903C ONVOY, LLC - TX 552   2023-01-15   
945-810 8 Irving TX 903C ONVOY, LLC - TX 552   2021-05-15   
945-867 4 Plano TX 903C ONVOY, LLC - TX 552   2022-11-03   
945-867 7 Plano TX 903C ONVOY, LLC - TX 552   2022-05-26   
945-942 A Plano TX 903C ONVOY, LLC - TX 552      
945-942 3 Plano TX 903C ONVOY, LLC - TX 552   2023-01-16   
945-942 4 Plano TX 903C ONVOY, LLC - TX 552   2023-01-16   
945-942 5 Plano TX 903C ONVOY, LLC - TX 552   2023-01-16   
945-942 9 Plano TX 903C ONVOY, LLC - TX 552   2023-01-16   
972-215 7 Irving TX 903C ONVOY, LLC - TX 552   2009-05-12   
972-236 4 Carrollton TX 903C ONVOY, LLC - TX 552   2016-01-07   
972-236 5 Carrollton TX 903C ONVOY, LLC - TX 552   2016-01-07   
972-236 7 Carrollton TX 903C ONVOY, LLC - TX 552   2011-04-04   
972-303 8 Plano TX 903C ONVOY, LLC - TX 552   2009-02-04   
972-309 9 Plano TX 903C ONVOY, LLC - TX 552   2008-10-07   
972-316 4 Lewisville EMS TX 903C ONVOY, LLC - TX 552   2005-11-30   
972-316 6 Lewisville EMS TX 903C ONVOY, LLC - TX 552   2005-11-30   
972-318 2 Lewisville EMS TX 903C ONVOY, LLC - TX 552   2010-06-15   
972-318 4 Lewisville EMS TX 903C ONVOY, LLC - TX 552   2010-08-06   
972-360 6 Carrollton TX 903C ONVOY, LLC - TX 552   2009-01-21   
972-426 2 Dallas Fort Worth Airport TX 903C ONVOY, LLC - TX 552   2015-07-30   
972-426 9 Dallas Fort Worth Airport TX 903C ONVOY, LLC - TX 552   2014-10-14   
972-428 2 Carrollton TX 903C ONVOY, LLC - TX 552   2005-11-30   
972-428 3 Carrollton TX 903C ONVOY, LLC - TX 552   2005-11-30   
972-428 7 Carrollton TX 903C ONVOY, LLC - TX 552   2008-08-29   
972-440 A Carrollton TX 903C ONVOY, LLC - TX 552      
972-440 0 Carrollton TX 903C ONVOY, LLC - TX 552   2018-02-24   
972-440 1 Carrollton TX 903C ONVOY, LLC - TX 552   2017-11-11   
972-440 2 Carrollton TX 903C ONVOY, LLC - TX 552   2017-11-11   
972-440 4 Carrollton TX 903C ONVOY, LLC - TX 552   2022-12-12   
972-440 5 Carrollton TX 903C ONVOY, LLC - TX 552   2018-02-24   
972-456 9 Dallas Fort Worth Airport TX 903C ONVOY, LLC - TX 552   2016-04-22   
972-457 A Irving TX 903C ONVOY, LLC - TX 552      
972-457 1 Irving TX 903C ONVOY, LLC - TX 552   2012-06-24   
972-457 2 Irving TX 903C ONVOY, LLC - TX 552   2012-06-24   

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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