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: 992

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-992 A Big Stone City SD STCDMNTOXEY  516J TON80 COMMUNICATIONS, LLC 626      
605-992 7 Big Stone City SD STCDMNTOXEY  516J TON80 COMMUNICATIONS, LLC 626   2022-04-25   
605-992 8 Big Stone City SD STCDMNTOX0X  5180 LEVEL 3 COMMUNICATIONS, LLC - SD 626   2023-01-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.