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.

Switch: NWORLAMA90Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
504-264 A New Orleans LA 516C AT&T CORP. 490      
504-475 A New Orleans LA 516C AT&T CORP. 490      
504-510 A New Orleans LA 516C AT&T CORP. 490      
601-875 A Crossroads MS 516C AT&T CORP. 490      
985-238 A Pine LA 516C AT&T CORP. 490      
985-256 A Pearl River LA 516C AT&T CORP. 490      
985-261 A Angie LA 516C AT&T CORP. 490      
985-284 A Amite City LA 516C AT&T CORP. 490      
985-293 A Houma LA 516C AT&T CORP. 490      
985-551 A Hammond LA 516C AT&T CORP. 490      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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