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.

Dow City, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
712-412 A OMAHNENWXPX  221F ONVOY, LLC - IA 644      
712-412 1 PHLAPAFGD2S  221F ONVOY, LLC - IA 644      
712-412 2 OMAHNENWXPX  221F ONVOY, LLC - IA 644      
712-412 3 OMAHNENWX2Y  624H ONVOY SPECTRUM, LLC 644      
712-412 4 OMAHNENWXPX  221F ONVOY, LLC - IA 644      
712-412 5 OMAHNENWXPX  221F ONVOY, LLC - IA 644      
712-412 6 OMAHNENWXPX  221F ONVOY, LLC - IA 644      
712-412 8 OMAHNENWX2Y  624H ONVOY SPECTRUM, LLC 644      
712-674 A DWCYIAXORS6  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.