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.

Rio, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-805 A HMPNILXDAMD  495J STRATUS NETWORKS 634      
309-805 1 HMPNILXDAMD  495J STRATUS NETWORKS 634      
309-805 5 RCISILRIX3X  224C ONVOY, LLC 634      
309-872 A RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 0 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 1 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 2 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 3 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 4 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 5 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 6 RCISILRIX3X  224C ONVOY, LLC 634      
309-872 7 RCISILRIX0X  508J CENTURYLINK COMMUNICATIONS, LLC 634      
309-872 8 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-872 9 RIO ILXDRS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 634      
309-972 A RIO ILABRS0  4624 ONEIDA NETWORK SERVICES, INC. 634      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.