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.

OCN: 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA

<< 1 2

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
712-454 A Sioux City IA SXCYIADTKMD  630      
712-454 6 Sioux City IA SXCYIADTKMD  630   2010-01-23   
712-539 4 Le Mars IA SXCYIADTKMD  630   2019-03-30   
712-581 6 Shenandoah IA OMAHNENWXEX  644   2017-08-17   
712-584 7 Spencer IA SXCYIADTKMD  630   2012-07-12   
712-631 8 Sheldon IA SXCYIADTKMD  630   2018-10-08   
712-642 0 Missouri Valley IA OMAHNENWXEX  644   2020-10-02   
712-666 3 Sioux City IA SXCYIADTKMD  630   2024-03-28   
712-682 4 South Bigelow IA ROCHMNROXAX  620   2018-10-12   
712-695 2 Clarinda IA OMAHNENWXEX  644   2017-03-20   
712-759 6 Spirit Lake IA SXCYIADTKMD  630   2012-03-12   
712-850 6 Clarinda IA OMAHNENWXEX  644   2017-11-10   
712-854 6 Denison IA OMAHNENWXEX  644   2019-09-20   
712-890 A Council Bluffs IA OMAHNEXODS0  644      
712-890 2 Council Bluffs IA OMAHNEXODS0  644      
712-890 3 Council Bluffs IA OMAHNEXODS0  644      

<< 1 2

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.