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.

Switch: DLLTTX01DMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-891 0 Irving TX 5562 METROPCS, INC. 552   2005-12-15   
972-891 1 Irving TX 5562 METROPCS, INC. 552   2005-12-15   
972-891 2 Irving TX 5562 METROPCS, INC. 552   2005-12-15   
972-891 4 Irving TX 5562 METROPCS, INC. 552   2005-12-15   
972-891 5 Irving TX 5562 METROPCS, INC. 552   2005-12-15   
972-916 0 Irving EMS TX 5562 METROPCS, INC. 552   2007-01-12   
972-916 1 Irving EMS TX 5562 METROPCS, INC. 552   2007-01-12   
972-916 8 Irving EMS TX 5562 METROPCS, INC. 552   2007-01-12   
972-957 9 Irving TX 5562 METROPCS, INC. 552   2019-07-12   
972-999 3 Irving TX 5562 METROPCS, INC. 552   2006-01-13   
972-999 5 Irving TX 5562 METROPCS, INC. 552   2005-09-29   
972-999 6 Irving TX 5562 METROPCS, INC. 552   2005-09-29   
972-999 7 Irving TX 5562 METROPCS, INC. 552   2005-09-29   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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