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.

NPA: 225 [Rate centres in NPA 225] [Dial plan for NPA 225]

NXX: 566

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
225-566 A Maringouin LA BTRGLA12XMZ  516J TON80 COMMUNICATIONS, LLC 492      
225-566 0 Maringouin LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 492   2025-01-26   
225-566 5 Maringouin LA   145J TERRA NOVA TELECOM INC. 492   2025-05-28   
225-566 6 Maringouin LA   516J TON80 COMMUNICATIONS, LLC 492   2022-03-16   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.