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.

Holbrook, NE

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
308-481 A GDISNEASGMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 646      
308-481 9 GDISNEASGMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 646   2021-07-31   
308-493 A HLBKNEXSRS0  1516 ARAPAHOE TEL. CO. 646      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.