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: 993

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
813-993 A Tampa East FL TAMSFLDEDSG  937C ONVOY, LLC - FL 952      
813-993 0 Tampa East FL   937C ONVOY, LLC - FL 952   2016-02-08   
813-993 1 Tampa East FL   937C ONVOY, LLC - FL 952   2016-02-08   
813-993 2 Tampa East FL   5562 METROPCS, INC. 952   2016-03-09   
813-993 3 Tampa East FL   5562 METROPCS, INC. 952   2016-03-18   
813-993 4 Tampa East FL   937C ONVOY, LLC - FL 952   2016-04-23   
813-993 5 Tampa East FL   6701 AERIAL COMMUNICATIONS, INC. 952   2016-02-09   
813-993 6 Tampa East FL   6701 AERIAL COMMUNICATIONS, INC. 952   2016-02-09   
813-993 7 Tampa East FL   4802 LEVEL 3 COMMUNICATIONS, LLC - FL 952   2016-02-09   
813-993 8 Tampa East FL   6701 AERIAL COMMUNICATIONS, INC. 952   2016-02-09   
813-993 9 Tampa East FL   6701 AERIAL COMMUNICATIONS, INC. 952   2016-02-09   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.