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.

Ralston, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-667 A RLTNIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 1 RLTNIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 2 RCCYIAXCHMD  221F ONVOY, LLC - IA 644      
712-667 3 RLTNIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 644      
712-667 6 RCCYIAXCHMD  221F ONVOY, LLC - IA 644      
712-667 8 OMAKNEYW8MD  516J TON80 COMMUNICATIONS, LLC 644      
712-667 9 DESMIAITGT5  444G AUREON COMMUNICATIONS, LLC 644      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.