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.

Switch: LNGDKSXARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
620-596 A Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 0 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 1 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 2 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 3 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 4 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 5 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 6 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 7 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-596 9 Langdon KS 1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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