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: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 514

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-514 A Huron SD SXFLSDCHDS3  078J NATIVE WIRELESS, LLC 640      
605-514 0 Huron SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2023-08-20   
605-514 1 Huron SD SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2024-12-20   
605-514 2 Huron SD   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2025-01-12   
605-514 3 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 4 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 5 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 6 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 7 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 8 Huron SD   078J NATIVE WIRELESS, LLC 640   2025-09-22   
605-514 9 Huron SD SXFLSDCHDS3  078J NATIVE WIRELESS, LLC 640   2023-05-15   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.