Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 360

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-360 A Mason City IL SPFDILMB0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374      
217-360 0 Mason City IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374      
217-360 1 Mason City IL   145J TERRA NOVA TELECOM INC. 374   2025-12-15   
217-360 2 Mason City IL   224C ONVOY, LLC 374   2020-05-21   
217-360 3 Mason City IL   224C ONVOY, LLC 374   2018-07-30   
217-360 4 Mason City IL   224C ONVOY, LLC 374   2020-05-21   
217-360 5 Mason City IL   224C ONVOY, LLC 374   2020-05-21   
217-360 6 Mason City IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 374   2016-01-22   
217-360 7 Mason City IL   224C ONVOY, LLC 374   2020-05-21   
217-360 8 Mason City IL   224C ONVOY, LLC 374   2019-04-15   
217-360 9 Mason City IL   224C ONVOY, LLC 374   2019-04-15   

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

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