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: 651

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-651 A Whitesboro TX DLLTTX01IMD  6529 T-MOBILE USA, INC. 552      
903-651 0 Whitesboro TX   318C CEBRIDGE TELECOM TX , L.P. - TX 552   2007-04-20   
903-651 1 Whitesboro TX   6529 T-MOBILE USA, INC. 552      
903-651 2 Whitesboro TX   318C CEBRIDGE TELECOM TX , L.P. - TX 552   2014-02-22   
903-651 3 Whitesboro TX   6529 T-MOBILE USA, INC. 552      
903-651 4 Whitesboro TX   515J IP HORIZON LLC 552   2017-12-15   
903-651 5 Whitesboro TX   073H TELNYX LLC 552   2019-05-17   
903-651 6 Whitesboro TX   6529 T-MOBILE USA, INC. 552      
903-651 7 Whitesboro TX   508J CENTURYLINK COMMUNICATIONS, LLC 552   2014-05-19   
903-651 8 Whitesboro TX   145J TERRA NOVA TELECOM INC. 552   2024-04-23   
903-651 9 Whitesboro TX   6529 T-MOBILE USA, INC. 552      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.