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.

Holcomb, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-371 A STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520      
573-371 0 STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-09   
573-371 1 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-06   
573-371 2 STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-09   
573-371 3 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-28   
573-371 5 STLSMO09WMD  516C AT&T CORP. 520   2011-05-20   
573-371 6 STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-06   
573-371 7 STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2017-09-03   
573-371 8 STLSMOGZ6MD  073H TELNYX LLC 520   2019-09-30   
573-371 9   515J IP HORIZON LLC 520   2013-12-19   
573-792 A HLCMMOSWRSE  9533 SOUTHWESTERN BELL 520      
573-792 1 HLCMMOSWRSE  9533 SOUTHWESTERN BELL 520      
573-792 2 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-792 3 HLCMMOSWRSE  9533 SOUTHWESTERN BELL 520      
573-792 9   145J TERRA NOVA TELECOM INC. 520   2021-01-20   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.