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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
645-223 A Miami FL MIAUFLWSZMD  490J DISH WIRELESS, LLC 46017   2024-09-16   
645-223 0 Miami FL MIAUFLWSZMD  490J DISH WIRELESS, LLC 46017   2024-09-16   
645-223 1 Miami FL MIAUFLWSZMD  490J DISH WIRELESS, LLC 46017   2024-10-24   
645-223 3 Miami FL MIAUFLWSZMD  490J DISH WIRELESS, LLC 46017   2024-09-26   
645-223 4 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   
645-223 5 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   
645-223 6 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   
645-223 7 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   
645-223 8 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   
645-223 9 Miami FL PRRNFLAEGT2  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 46017   2024-09-17   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.