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: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 224

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-224 A Maryville MO INDPMOBHBMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524      
660-224 0 Maryville MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-224 1 Maryville MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524   2024-10-05   
660-224 2 Maryville MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2006-04-21   
660-224 4 Maryville MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2005-01-30   
660-224 7 Maryville MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2005-04-15   
660-224 9 Maryville MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 524   2022-01-16   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.