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: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
813-821 A Tampa Central FL TAMQFLSZDS0  7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952      
813-821 0 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 1 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 2 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 3 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 4 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 5 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 6 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 7 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 8 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   
813-821 9 Tampa Central FL   7448 MCI WORLDCOM COMMUNICATIONS, INC. - FL 952   2021-07-09   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.