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: 214 [Rate centres in NPA 214] [Dial plan for NPA 214]

NXX: 434

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
214-434 A Dallas TX RCSNTXHVBMD  516C AT&T CORP. 552      
214-434 0 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 1 Dallas TX RCSNTXHVBMD  516C AT&T CORP. 552   2005-08-12   
214-434 2 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 3 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 4 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 5 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 6 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 7 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 8 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   
214-434 9 Dallas TX DLLTTXID1MD  5562 METROPCS, INC. 552   2005-12-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.