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: 218 [Rate centres in NPA 218] [Dial plan for NPA 218]

NXX: 721

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
218-721 A Duluth MN ISLKMNILRS1  9631 QWEST CORPORATION 624      
218-721 0 Duluth MN ISLKMNILRS1  9631 QWEST CORPORATION 624      
218-721 1 Duluth MN DLTHMNEHFMD  145J TERRA NOVA TELECOM INC. 624   2022-10-08   
218-721 2 Duluth MN DLTHMNMEX5X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 624   2007-12-13   
218-721 3 Duluth MN ISLKMNILRS1  9631 QWEST CORPORATION 624      
218-721 4 Duluth MN ISLKMNILRS1  9631 QWEST CORPORATION 624      
218-721 5 Duluth MN ISLKMNILRS1  9631 QWEST CORPORATION 624      
218-721 6 Duluth MN DLTHMNMEX5X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 624   2014-03-19   
218-721 7 Duluth MN DLTHMNMEX5X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 624   2014-03-19   
218-721 8 Duluth MN DLTHMNMEX5X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 624   2014-03-19   
218-721 9 Duluth MN DLTHMNEHFMD  145J TERRA NOVA TELECOM INC. 624   2023-04-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.