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: 575 [Rate centres in NPA 575] [Dial plan for NPA 575]

NXX: 327

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
575-327 A Cuba NM ALBQNM10X3X  516J TON80 COMMUNICATIONS, LLC 664      
575-327 0 Cuba NM ALBQNMMAXPY  624H ONVOY SPECTRUM, LLC 664   2025-01-22   
575-327 6 Cuba NM ALBQNM10X3X  516J TON80 COMMUNICATIONS, LLC 664   2022-03-17   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.