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: 787

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-787 A White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 0 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 1 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 2 White Cloud MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348      
231-787 3 White Cloud MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348      
231-787 4 White Cloud MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-787 5 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 6 White Cloud MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-787 7 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 8 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-787 9 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.