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.

NPA: 361 [Rate centres in NPA 361] [Dial plan for NPA 361]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
361-255 A Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564      
361-255 0 Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564      
361-255 1 Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564   2015-02-14   
361-255 2 Mathis TX CRCHTXKC0MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 564   2019-03-07   
361-255 3 Mathis TX CRCHTXTUX3Y  004F BANDWIDTH.COM CLEC, LLC - TX 564   2010-10-02   
361-255 4 Mathis TX CRCHTXTUX3Y  004F BANDWIDTH.COM CLEC, LLC - TX 564   2010-06-24   
361-255 5 Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564   2009-05-15   
361-255 6 Mathis TX CRCHTXBBBMD  516C AT&T CORP. 564   2011-11-09   
361-255 7 Mathis TX CRCHTXTUX9Y  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 564   2009-06-18   
361-255 8 Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564   2013-09-13   
361-255 9 Mathis TX CRCHTXTUXJY  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 564      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.