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: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 449

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-449 A Pierz MN LTFLMNLF5MD  6701 AERIAL COMMUNICATIONS, INC. 626      
320-449 1 Pierz MN   624H ONVOY SPECTRUM, LLC 626      
320-449 6 Pierz MN STCDMNTOXUX  8405 TELEPORT COMMUNICATIONS AMERICA, LLC - MN 626      
320-449 7 Pierz MN STCDMNTOX0X  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626      
320-449 9 Pierz MN LTFLMNLF5MD  6701 AERIAL COMMUNICATIONS, INC. 626      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.