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: 402 [Rate centres in NPA 402] [Dial plan for NPA 402]

NXX: 878

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
402-878 A Winnebago NE WNNBNEXH0MD  1542 EASTERN NEBRASKA TEL. CO. 630      
402-878 2 Winnebago NE WNNBNEXH0MD  1542 EASTERN NEBRASKA TEL. CO. 630      
402-878 3 Winnebago NE WNNBNEXH0MD  1542 EASTERN NEBRASKA TEL. CO. 630      
402-878 4 Winnebago NE WNNBNEXH0MD  1542 EASTERN NEBRASKA TEL. CO. 630      
402-878 8 Winnebago NE   145J TERRA NOVA TELECOM INC. 630   2025-07-07   
402-878 9 Winnebago NE   145J TERRA NOVA TELECOM INC. 630   2026-03-30   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.