Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: RIO ILXDRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
309-872 A Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 0 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 1 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 2 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 3 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 4 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 5 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 8 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 9 Rio IL 1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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