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: 645 [Rate centres in NPA 645] [Dial plan for NPA 645]

NXX: 933

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
645-933 A Miami FL   883K AHOI LLC 46017   2026-07-30   
645-933 4 Miami FL   883K AHOI LLC 46017   2026-07-30   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.