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: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-644 A Decorah IA IWCYIA70AMD  516J TON80 COMMUNICATIONS, LLC 635      
563-644 1 Decorah IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2024-11-12   
563-644 2 Decorah IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2024-12-20   
563-644 6 Decorah IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2021-08-03   
563-644 7 Decorah IA IWCYIA70AMD  516J TON80 COMMUNICATIONS, LLC 635   2021-08-02   
563-644 8 Decorah IA CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2022-12-07   
563-644 9 Decorah IA IWCYIA702MD  939H COMMIO, LLC 635   2022-09-05   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.