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: KSCYMO09DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
660-236 6 Marshall MO 7421 AT&T LOCAL 524   2009-09-18   
816-857 A Liberty MO 7421 AT&T LOCAL 524      
816-857 9 Liberty MO 7421 AT&T LOCAL 524      

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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