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: 701 [Rate centres in NPA 701] [Dial plan for NPA 701]

NXX: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
701-603 A Watford City ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2024-08-06   
701-603 8 Watford City ND BSMRNDBCQMD  8054 LEVEL 3 COMMUNICATIONS, LLC - ND 638   2024-08-06   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.