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: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-837 A Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 0 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 1 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 2 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 3 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 4 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 5 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 6 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 7 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      
309-837 8 Macomb IL   6265 UNITED STATES CELLULAR - IL 977   2025-02-11   
309-837 9 Macomb IL MCMBILXDDS0  1015 FRONTIER NORTH, INC. - IL 977      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.