Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 563 [Rate centres in NPA 563] [Dial plan for NPA 563]

NXX: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-550 A Calmar IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635      
563-550 0 Calmar IA IWCYIA702MD  939H COMMIO, LLC 635   2022-11-06   
563-550 1 Calmar IA CDRRIAAXQMD  444G AUREON COMMUNICATIONS, LLC 635   2023-12-23   
563-550 5 Calmar IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2021-08-21   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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