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: 531 [Rate centres in NPA 531] [Dial plan for NPA 531]

NXX: 200

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-200 A Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-200 0 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-02-26   
531-200 1 Omaha NE CRRLIAAF0MD  6263 UNITED STATES CELLULAR - NE 644   2016-04-14   
531-200 2 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-02-26   
531-200 3 Omaha NE OMAHNENWXGY  318J COMCAST IP PHONE, LLC 644   2016-04-05   
531-200 4 Omaha NE OMAHNENWXGY  318J COMCAST IP PHONE, LLC 644   2016-04-05   
531-200 5 Omaha NE OMAHNENWXGY  318J COMCAST IP PHONE, LLC 644   2016-04-22   
531-200 6 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-05-06   
531-200 7 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-01-15   
531-200 8 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-05-06   
531-200 9 Omaha NE OMAHNENWXPX  549E ONVOY, LLC - NE 644   2016-07-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.