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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-256 A Sealy TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
979-256 0 Sealy TX   903C ONVOY, LLC - TX 560   2014-04-25   
979-256 1 Sealy TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2005-03-17   
979-256 2 Sealy TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2006-01-05   
979-256 3 Sealy TX   7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2010-05-17   
979-256 4 Sealy TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
979-256 5 Sealy TX   903C ONVOY, LLC - TX 560   2010-11-15   
979-256 6 Sealy TX   5562 METROPCS, INC. 560   2007-07-24   
979-256 7 Sealy TX   5562 METROPCS, INC. 560   2006-05-23   
979-256 8 Sealy TX   6701 AERIAL COMMUNICATIONS, INC. 560   2007-07-24   
979-256 9 Sealy TX   5562 METROPCS, INC. 560   2003-07-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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