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.

Switch: OMAHNENWXGY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-566 0 Underwood IA 318J COMCAST IP PHONE, LLC 644   2005-02-20   
712-796 3 Council Bluffs IA 318J COMCAST IP PHONE, LLC 644   2019-04-24   
712-796 4 Council Bluffs IA 318J COMCAST IP PHONE, LLC 644   2019-12-04   
712-828 4 Council Bluffs IA 318J COMCAST IP PHONE, LLC 644   2018-04-07   
712-847 A Carter Lake IA 318J COMCAST IP PHONE, LLC 644      
712-847 0 Carter Lake IA 318J COMCAST IP PHONE, LLC 644      
712-890 5 Council Bluffs IA 318J COMCAST IP PHONE, LLC 644   2017-08-14   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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