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: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 504

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-504 A Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554      
903-504 0 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2009-08-15   
903-504 1 Tyler TX LGVWTXBA37Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 554   2008-07-27   
903-504 2 Tyler TX LGVWTXBA37Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 554   2008-07-27   
903-504 3 Tyler TX LGVWTXBA37Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 554   2008-07-27   
903-504 4 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2009-09-21   
903-504 5 Tyler TX LGVWTXPLXRX  318C CEBRIDGE TELECOM TX , L.P. - TX 554   2008-08-21   
903-504 6 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2009-07-31   
903-504 7 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2009-06-23   
903-504 8 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2009-11-12   
903-504 9 Tyler TX LGVWTXPLX7Y  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 554   2008-06-01   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.