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.

Armstrong, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-273 A ARMSMOCRRS0  9533 SOUTHWESTERN BELL 524      
660-273 0 KSCYKSJOSMD  993E BANDWIDTH.COM CLEC, LLC - MO 524      
660-273 1 ARMSMOCRRS0  9533 SOUTHWESTERN BELL 524      
660-273 2 ARMSMOCRRS0  9533 SOUTHWESTERN BELL 524      
660-273 3 KSCYMO55DSG  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 524      
660-273 4 KSCYMO55XXX  093F ONVOY, LLC - MO 524      
660-273 7 KSCAMO961MD  508J CENTURYLINK COMMUNICATIONS, LLC 524      
660-273 8 KSCYMO55XNY  073H TELNYX LLC 524      
660-273 9 ARMSMOCRRS0  9533 SOUTHWESTERN BELL 524      
660-677 A KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-677 2 KSCYMO55XXX  093F ONVOY, LLC - MO 524      
660-677 4 KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      
660-677 6 KSCYMO55XXX  093F ONVOY, LLC - MO 524      
660-677 7 KSCYMO55X0Z  965H FRACTEL, LLC 524      
660-677 8 KSCYMO09QMD  516C AT&T CORP. 524      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.