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: 681

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-681 A Fruitport MI FRPRMIXGRS0  0695 FRONTIER NORTH, INC. - MI 348      
231-681 0 Fruitport MI   0695 FRONTIER NORTH, INC. - MI 348      
231-681 1 Fruitport MI   543C ONVOY, LLC - MI 348   2015-12-17   
231-681 2 Fruitport MI   543C ONVOY, LLC - MI 348   2015-12-17   
231-681 3 Fruitport MI   7157 BROOKS FIBER COMMUNICATIONS OF MICHIGAN - MI 348   2012-12-17   
231-681 4 Fruitport MI   543C ONVOY, LLC - MI 348   2020-11-27   
231-681 5 Fruitport MI   543C ONVOY, LLC - MI 348   2020-11-27   
231-681 7 Fruitport MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2015-09-17   
231-681 8 Fruitport MI   543C ONVOY, LLC - MI 348   2015-12-09   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.