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: 813 [Rate centres in NPA 813] [Dial plan for NPA 813]

NXX: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
813-524 A Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952      
813-524 0 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-02-10   
813-524 1 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-02-10   
813-524 2 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-02-10   
813-524 3 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-02-10   
813-524 4 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-02-10   
813-524 5 Tampa Central FL TAMRFLWSDS2  4802 LEVEL 3 COMMUNICATIONS, LLC - FL 952   2019-02-23   
813-524 6 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-03-21   
813-524 7 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-03-21   
813-524 8 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-03-21   
813-524 9 Tampa Central FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952   2019-03-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.