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: 812 [Rate centres in NPA 812] [Dial plan for NPA 812]

NXX: 513

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
812-513 A Oaktown IN OKTWINXBRS0  0779 FRONTIER NORTH, INC. - IN 338      
812-513 0 Oaktown IN   0779 FRONTIER NORTH, INC. - IN 338      
812-513 1 Oaktown IN   105F BANDWIDTH.COM CLEC, LLC - IN 338   2021-01-11   
812-513 5 Oaktown IN   097D ONVOY, LLC - IN 338   2021-12-04   
812-513 6 Oaktown IN   097D ONVOY, LLC - IN 338   2021-12-04   
812-513 7 Oaktown IN   508J CENTURYLINK COMMUNICATIONS, LLC 338   2014-07-02   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.