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: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-242 A Montrose MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-242 2 Montrose MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2018-10-28   
660-242 4 Montrose MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-242 5 Montrose MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-02-28   
660-242 6 Montrose MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-02-28   
660-242 7 Montrose MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-02-28   
660-242 8 Montrose MO WRBGMOXAXCX  093F ONVOY, LLC - MO 524   2021-02-28   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.