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.

Washington MCA5, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
636-432 A WASHMOBERS0  9533 SOUTHWESTERN BELL 520      
636-432 0 WASHMOBERS0  9533 SOUTHWESTERN BELL 520   2006-03-03   
636-432 1 OLVEMOAXCA0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2006-07-20   
636-432 2 NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2009-03-05   
636-432 3 NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2009-12-22   
636-432 4 NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2010-08-07   
636-432 5 OLVEMOAXCA0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2012-10-14   
636-432 6 NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2012-12-28   
636-432 7   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2025-05-15   
636-432 8 NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2013-11-11   
636-432 9 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2006-09-05   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.