Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Cromwell, MN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
218-644 A CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 0 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 1 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 2 DLTHMNMEXKX  073H TELNYX LLC 624   2020-07-12   
218-644 3 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 4 DLTHMNMEX7X  184D ONVOY, LLC - MN 624   2021-03-08   
218-644 5 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 6 DLTHMNMEX7X  184D ONVOY, LLC - MN 624   2015-06-18   
218-644 7 DLTHMNMEX7X  184D ONVOY, LLC - MN 624   2016-07-25   
218-644 8 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      
218-644 9 CRWLMNXCRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 624      

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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