Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 979 [Rate centres in NPA 979] [Dial plan for NPA 979]

NXX: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-991 A Clute-Lake Jackson TX   903C ONVOY, LLC - TX 560   2026-09-11   
979-991 0 Clute-Lake Jackson TX   903C ONVOY, LLC - TX 560   2026-09-11   
979-991 1 Clute-Lake Jackson TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2026-09-14   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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