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: 816 [Rate centres in NPA 816] [Dial plan for NPA 816]

NXX: 335

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-335 A Liberty MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2024-12-17   
816-335 0 Liberty MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
816-335 1 Liberty MO   7589 LEVEL 3 TELECOM OF KANSAS CITY, LLC - MO 524   2005-05-19   
816-335 2 Liberty MO   7589 LEVEL 3 TELECOM OF KANSAS CITY, LLC - MO 524   2005-05-19   
816-335 3 Liberty MO   093F ONVOY, LLC - MO 524   2025-05-11   
816-335 4 Liberty MO   829J PAETEC ITEL, LLC 524   2009-08-31   
816-335 5 Liberty MO   5562 METROPCS, INC. 524   2005-08-06   
816-335 6 Liberty MO   7589 LEVEL 3 TELECOM OF KANSAS CITY, LLC - MO 524   2006-04-29   
816-335 7 Liberty MO   5562 METROPCS, INC. 524   2014-07-28   
816-335 8 Liberty MO   5562 METROPCS, INC. 524   2014-08-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.