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: 396

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-396 A Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 0 Cadillac MI   515J IP HORIZON LLC 348      
231-396 1 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-396 2 Cadillac MI TRCYMIMNVMD  116F PENINSULA FIBER NETWORK, LLC - MI 348      
231-396 3 Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 4 Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 5 Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 6 Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 7 Cadillac MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-396 8 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-396 9 Cadillac MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.