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.

Turtle Lake, ND

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
701-448 A HAZNNDXADS1  4413 WEST RIVER TELECOMMUNICATIONS COOP. - ND 638      
701-531 A BSMRNDBCXDX  6568 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 638      
701-531 0 BSMRNDBCXDX  6568 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 638      
701-531 1 BSMRNDBCX7X  073H TELNYX LLC 638   2023-10-20   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.