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: 326 [Rate centres in NPA 326] [Dial plan for NPA 326]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
326-231 A Springfield OH DYTNOH22XGY  464C ONVOY, LLC - OH 328   2024-08-05   
326-231 0 Springfield OH DYTNOH22XGY  464C ONVOY, LLC - OH 328   2024-08-05   
326-231 8 Springfield OH DYTNOH22X8Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 328   2024-10-07   
326-231 9 Springfield OH DYTNOH22X8Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 328   2024-10-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.