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: 267

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-267 A Williamsburg MI WLBGMIWBRSA  9323 MICHIGAN BELL TEL CO 348      
231-267 0 Williamsburg MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-267 1 Williamsburg MI GDRPMIBQ1MD  4632 TELNET WORLDWIDE, INC. 348   2005-09-02   
231-267 2 Williamsburg MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-05-10   
231-267 3 Williamsburg MI GFTPMIEF1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2007-02-25   
231-267 4 Williamsburg MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2009-12-01   
231-267 5 Williamsburg MI WLBGMIWBRSA  9323 MICHIGAN BELL TEL CO 348      
231-267 6 Williamsburg MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-11-14   
231-267 7 Williamsburg MI GDRPMIBL54Z  0975 LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI 348   2004-02-12   
231-267 8 Williamsburg MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2011-12-30   
231-267 9 Williamsburg MI WLBGMIWBRSA  9323 MICHIGAN BELL TEL CO 348      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.