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.

Switch: FLNGILXADS0

Remotes:

Switch Switch name Switch type
GRMTILXARS0  GRAYMONT  DC1 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-796 A Flanagan IL 1073 FRONTIER COMMUNICATIONS-PRAIRIE, INC. 366      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.