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: SXCYIADTQMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-843 7 Albert City IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-23   
712-845 7 Laurens IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-24   
712-848 7 Rolfe IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-27   
712-864 6 Armstrong IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-23   
712-865 7 Dolliver IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-23   
712-883 7 Danbury IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-23   
712-938 5 Merrill IA 508J CENTURYLINK COMMUNICATIONS, LLC 630   2016-12-24   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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