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: 334

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-334 A Gallatin MO INDPMOXCGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524      
660-334 0 Gallatin MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524      
660-334 1 Gallatin MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524   2007-09-13   
660-334 4 Gallatin MO   145J TERRA NOVA TELECOM INC. 524   2025-07-26   
660-334 5 Gallatin MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2020-06-23   
660-334 8 Gallatin MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524   2012-12-13   
660-334 9 Gallatin MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 524   2024-12-22   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.