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: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-603 A Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 0 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 1 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 2 Shreveport LA SHPULA34G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 486   2020-01-19   
318-603 3 Shreveport LA SHPTLAMA11Z  318J COMCAST IP PHONE LLC 486   2016-08-26   
318-603 4 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 5 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 6 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 7 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 8 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      
318-603 9 Shreveport LA SHPTLASGDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 486      

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.