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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
214-387 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
214-436 A Frisco TX 9533 SOUTHWESTERN BELL 552      
214-494 A Frisco TX 9533 SOUTHWESTERN BELL 552      
214-705 A Frisco TX 9533 SOUTHWESTERN BELL 552      
214-872 A Frisco TX 9533 SOUTHWESTERN BELL 552      
469-294 A Frisco TX 9533 SOUTHWESTERN BELL 552      
469-365 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
469-462 A Frisco TX 9533 SOUTHWESTERN BELL 552      
469-604 A Frisco TX 9533 SOUTHWESTERN BELL 552      
469-633 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
940-312 A Denton PPCP TX 7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-334 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
972-335 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
972-377 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
972-712 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      
972-731 A Frisco EACS TX 9533 SOUTHWESTERN BELL 552      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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