Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 318 [Rate centres in NPA 318] [Dial plan for NPA 318]

NXX: 520

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-520 A Castor LA NTCHLABFDS0  1762 CP-TEL NETWORK SERVICES, INC. - LA 486      
318-520 0 Castor LA   153F BANDWIDTH.COM CLEC, LLC - LA 486   2011-10-09   
318-520 1 Castor LA   749E ONVOY, LLC - LA 486   2016-04-18   
318-520 2 Castor LA   1762 CP-TEL NETWORK SERVICES, INC. - LA 486   2004-07-10   
318-520 3 Castor LA   749E ONVOY, LLC - LA 486   2016-04-18   
318-520 4 Castor LA   749E ONVOY, LLC - LA 486   2020-12-12   
318-520 5 Castor LA   749E ONVOY, LLC - LA 486   2016-05-25   
318-520 6 Castor LA   749E ONVOY, LLC - LA 486   2016-05-25   
318-520 7 Castor LA   508J CENTURYLINK COMMUNICATIONS, LLC 486   2014-09-08   
318-520 8 Castor LA   749E ONVOY, LLC - LA 486   2019-03-30   
318-520 9 Castor LA   749E ONVOY, LLC - LA 486   2019-03-30   

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

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