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: 563 [Rate centres in NPA 563] [Dial plan for NPA 563]

NXX: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-657 A Walcott IA DVNPIAEAFMD  7421 AT&T - LOCAL 634      
563-657 0 Walcott IA   515J IP HORIZON LLC 634   2025-08-21   
563-657 1 Walcott IA   204A CS TECHNOLOGIES, INC. - IA 634   2017-03-12   
563-657 2 Walcott IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-657 3 Walcott IA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 634   2015-03-16   
563-657 5 Walcott IA   221F ONVOY, LLC - IA 634   2021-03-14   
563-657 6 Walcott IA   508J CENTURYLINK COMMUNICATIONS, LLC 634   2016-10-08   
563-657 7 Walcott IA   221F ONVOY, LLC - IA 634   2013-12-09   
563-657 8 Walcott IA   221F ONVOY, LLC - IA 634   2013-12-09   
563-657 9 Walcott IA   7421 AT&T - LOCAL 634   2012-03-03   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.