Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Morris, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
815-710 2   7421 AT&T - LOCAL 358      
815-710 3   224C ONVOY, LLC 358   2016-03-18   
815-710 4   224C ONVOY, LLC 358   2016-03-18   
815-710 5   516C AT&T CORP. 358   2011-10-28   
815-710 6   6529 T-MOBILE USA, INC. 358   2016-06-24   
815-710 7   6529 T-MOBILE USA, INC. 358   2014-11-03   
815-710 8   6529 T-MOBILE USA, INC. 358   2014-11-03   
815-710 9   145J TERRA NOVA TELECOM INC. 358   2021-01-15   
815-941 A MRRSILMSDS0  9329 ILLINOIS BELL TEL CO 358      
815-942 A MRRSILMSDS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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