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.

Delft, MN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
507-678 A DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 0 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 1 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 2 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 3 ROCHMNROUMD  184D ONVOY, LLC - MN 620   2017-05-29   
507-678 4 OWTNMNOWYMD  508J CENTURYLINK COMMUNICATIONS, LLC 620   2017-05-10   
507-678 5 ROCHMNROUMD  184D ONVOY, LLC - MN 620   2015-06-18   
507-678 6 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 7 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 8 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-678 9 DLFTMNXDRS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.