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: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-321 A Elmira MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-321 0 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-321 1 Elmira MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-321 3 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-321 4 Elmira MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348      
231-321 5 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-321 7 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.