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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
402-257 A Guide Rock NE GDRKNEXLRS0  1568 WINDSTREAM NEBRASKA, INC. 958      
402-257 0 Guide Rock NE LNCLNEXLXEX  995E BANDWIDTH.COM CLEC, LLC - NE 958   2012-01-27   
402-257 1 Guide Rock NE LNCLNEXLXEX  995E BANDWIDTH.COM CLEC, LLC - NE 958   2015-05-31   
402-257 2 Guide Rock NE GDRKNEXLRS0  1568 WINDSTREAM NEBRASKA, INC. 958      
402-257 3 Guide Rock NE GDRKNEXLRS0  1568 WINDSTREAM NEBRASKA, INC. 958      
402-257 4 Guide Rock NE GDRKNEXLRS0  1568 WINDSTREAM NEBRASKA, INC. 958      
402-257 5 Guide Rock NE LNCLNEXLXEX  995E BANDWIDTH.COM CLEC, LLC - NE 958   2018-06-08   
402-257 6 Guide Rock NE LNCLNEXLXOX  508J CENTURYLINK COMMUNICATIONS, LLC 958   2014-07-28   
402-257 7 Guide Rock NE LNCLNEXLX3Y  5807 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 958      
402-257 8 Guide Rock NE GDRKNEXLRP0  1568 WINDSTREAM NEBRASKA, INC. 958      
402-257 9 Guide Rock NE GDRKNEXLRS0  1568 WINDSTREAM NEBRASKA, INC. 958      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.