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: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 743

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-743 A North Richland Hills TX   6529 T-MOBILE USA, INC. 552      
817-743 0 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-07-30   
817-743 1 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-07-30   
817-743 2 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-05-08   
817-743 3 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-05-08   
817-743 4 North Richland Hills TX   792K CHARTER IP ENABLED SERVICES, LLC 552      
817-743 5 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-07-30   
817-743 6 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-07-30   
817-743 7 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-07-30   
817-743 8 North Richland Hills TX   792K CHARTER IP ENABLED SERVICES, LLC 552      
817-743 9 North Richland Hills TX   6529 T-MOBILE USA, INC. 552   2025-05-08   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.