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: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-390 A Barker TX HSTDTXBGBMD  5562 METROPCS, INC. 560      
346-390 0 Barker TX   5562 METROPCS, INC. 560   2019-12-02   
346-390 1 Barker TX   5562 METROPCS, INC. 560   2019-12-02   
346-390 2 Barker TX   5562 METROPCS, INC. 560   2019-11-18   
346-390 3 Barker TX   6701 AERIAL COMMUNICATIONS, INC. 560   2019-11-18   
346-390 4 Barker TX   6701 AERIAL COMMUNICATIONS, INC. 560   2019-11-18   
346-390 5 Barker TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2020-06-15   
346-390 6 Barker TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2020-06-15   
346-390 7 Barker TX   5562 METROPCS, INC. 560   2019-10-10   
346-390 8 Barker TX   6701 AERIAL COMMUNICATIONS, INC. 560   2019-10-10   
346-390 9 Barker TX   5562 METROPCS, INC. 560   2019-10-10   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.