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: 834

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-834 A Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 0 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 1 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 2 Grant MI   279B CLEAR RATE COMMUNICATIONS, INC. - MI 348      
231-834 3 Grant MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-834 4 Grant MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-834 5 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 6 Grant MI   490J DISH WIRELESS, LLC 348      
231-834 7 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 8 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
231-834 9 Grant MI GRNTMIMNRSA  9323 MICHIGAN BELL TEL CO 348      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.