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: 694

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-694 A Calhoun MO CLHNMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-694 0 Calhoun MO CLHNMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-694 3 Calhoun MO CLHNMOXARS0  1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO 524      
660-694 4 Calhoun MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2019-12-14   
660-694 5 Calhoun MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2019-12-14   
660-694 8 Calhoun MO   145J TERRA NOVA TELECOM INC. 524   2025-07-21   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.