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.
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New Haven, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-237 A NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 1 NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 2 NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 3 NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 4 NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 5 NWHNMOXARS2  1882 FIDELITY TELEPHONE, LLC 520      
573-237 8 STLSMOGZHMD  516J TON80 COMMUNICATIONS, LLC 520   2022-02-22   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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