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: 217 [Rate centres in NPA 217] [Dial plan for NPA 217]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
217-439 A Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      
217-439 0 Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      
217-439 1 Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      
217-439 2 Modesto IL SPFDILES7MD  224C ONVOY, LLC 374   2019-04-21   
217-439 3 Modesto IL SPFDILES7MD  224C ONVOY, LLC 374   2019-04-21   
217-439 4 Modesto IL SPFDILES7MD  224C ONVOY, LLC 374   2018-07-30   
217-439 5 Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      
217-439 6 Modesto IL SPFDILES7MD  224C ONVOY, LLC 374   2020-08-07   
217-439 7 Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      
217-439 8 Modesto IL SPFDILES7MD  224C ONVOY, LLC 374   2020-08-07   
217-439 9 Modesto IL MDSTILXCDS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 374      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.