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: HSTNTXDNCM5

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-256 5 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2020-02-16   
936-397 7 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-10-17   
936-397 8 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-10-17   
936-397 9 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-08-20   
936-514 6 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2024-10-11   
936-641 1 Liberty TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2024-11-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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