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: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-387 A Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 0 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 1 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 2 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 3 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 4 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 5 Decorah IA DCRHIACODS0  9631 QWEST CORPORATION 635      
563-387 6 Decorah IA   593K MCC TELEPHONY LLC 635      
563-387 7 Decorah IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
563-387 8 Decorah IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
563-387 9 Decorah IA CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.