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: 515 [Rate centres in NPA 515] [Dial plan for NPA 515]

NXX: 983

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
515-983 A Ames IA   515J IP HORIZON LLC 632   2025-09-18   
515-983 0 Ames IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 632   2025-09-19   
515-983 1 Ames IA   515J IP HORIZON LLC 632   2025-09-18   
515-983 2 Ames IA   6529 T-MOBILE USA, INC. 632   2025-10-06   
515-983 3 Ames IA   6529 T-MOBILE USA, INC. 632   2025-10-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.