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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-440 A Brunswick MO KSCYMO55X2Y  938F MCC TELEPHONY OF MISSOURI, LLC - MO 524      
660-440 0 Brunswick MO KSCYMO55X2Y  938F MCC TELEPHONY OF MISSOURI, LLC - MO 524   2010-08-09   
660-440 1 Brunswick MO KSCYMO55DSG  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524   2014-04-10   
660-440 5 Brunswick MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524   2021-03-16   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.