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: 239 [Rate centres in NPA 239] [Dial plan for NPA 239]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
239-521 A Fort Myers FL   704G WIDE VOICE, LLC - FL 93902   2025-10-06   
239-521 0 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 1 Fort Myers FL   704G WIDE VOICE, LLC - FL 93902   2025-10-06   
239-521 2 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 3 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 4 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 5 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 8 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   
239-521 9 Fort Myers FL   624H ONVOY SPECTRUM, LLC 93902   2025-10-14   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.