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: MNVYKSXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
620-328 A Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 0 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 1 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 2 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 3 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 4 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 5 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 7 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 8 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 9 Mound Valley KS 1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      

Last updated: Sun, 17 May 2026 03:26:51 UTC

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