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: 656 [Rate centres in NPA 656] [Dial plan for NPA 656]

NXX: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
656-258 A Tampa Central FL   515J IP HORIZON LLC 952   2025-06-27   
656-258 0 Tampa Central FL   937C ONVOY, LLC - FL 952   2025-07-04   
656-258 1 Tampa Central FL   515J IP HORIZON LLC 952   2025-06-27   
656-258 2 Tampa Central FL   515J IP HORIZON LLC 952   2025-06-27   
656-258 7 Tampa Central FL   732J NUSO, LLC 952   2025-07-04   
656-258 8 Tampa Central FL   732J NUSO, LLC 952   2025-07-04   
656-258 9 Tampa Central FL   732J NUSO, LLC 952   2025-07-04   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.