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: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-258 A Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 1 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 2 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 3 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 4 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 5 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 6 Brookfield MO   145J TERRA NOVA TELECOM INC. 524   2023-06-24   
660-258 7 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 8 Brookfield MO BRFDMOCLRS0  9533 SOUTHWESTERN BELL 524      
660-258 9 Brookfield MO MACNMOBBDS0  250A CHARITON VALLEY COMMUNICATIONS CORPORATION 524   2013-12-23   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.