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: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
645-237 A North Dade FL NDADFLGGXYY  6889 OMNIPOINT MIAMI E LICENSE, LLC 46017   2024-12-27   
645-237 9 North Dade FL NDADFLGGXYY  6889 OMNIPOINT MIAMI E LICENSE, LLC 46017   2025-01-15   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.