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.

NPA: 620 [Rate centres in NPA 620] [Dial plan for NPA 620]

NXX: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-328 A Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 0 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 1 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 2 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 3 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 4 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 5 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 6 Mound Valley KS WCHTKSMBX2X  2240 LEVEL 3 COMMUNICATIONS, LLC - KS 532   2014-03-04   
620-328 7 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 8 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      
620-328 9 Mound Valley KS MNVYKSXARS0  1842 UNITED TEL. CO. OF KANSAS DBA CENTURYLINK 532      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.