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: 318 [Rate centres in NPA 318] [Dial plan for NPA 318]

NXX: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-599 A Calhoun LA SHPTLAMAX6Y  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 486      
318-599 0 Calhoun LA SHPTLAMAX6Y  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 486   2005-01-07   
318-599 1 Calhoun LA SHPTLAMAXRY  153F BANDWIDTH.COM CLEC, LLC - LA 486   2012-05-31   
318-599 2 Calhoun LA SHPTLAMAXZY  749E ONVOY, LLC - LA 486   2016-04-02   
318-599 3 Calhoun LA SHPTLAMAXMZ  516C AT&T CORP. 486   2013-02-16   
318-599 4 Calhoun LA SHPTLAMAX6Y  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 486   2004-12-20   
318-599 5 Calhoun LA SHPTLAMA11Z  318J COMCAST IP PHONE, LLC 486   2005-09-01   
318-599 6 Calhoun LA SHPTLAMAXZY  749E ONVOY, LLC - LA 486   2016-04-02   
318-599 7 Calhoun LA CTPTLAXA1MD  508J CENTURYLINK COMMUNICATIONS, LLC 486   2014-09-09   
318-599 8 Calhoun LA SHPTLAMA11Z  318J COMCAST IP PHONE, LLC 486   2006-09-11   
318-599 9 Calhoun LA SHPTLAMAXRY  153F BANDWIDTH.COM CLEC, LLC - LA 486   2008-12-18   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.