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: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-837 A Fredericksburg IA IWCYIA70AMD  516J TON80 COMMUNICATIONS, LLC 635      
563-837 0 Fredericksburg IA   6529 T-MOBILE USA, INC. 635      
563-837 2 Fredericksburg IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
563-837 4 Fredericksburg IA IWCYIA70AMD  516J TON80 COMMUNICATIONS, LLC 635      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.