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.

Falmouth, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-310 A GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-310 0 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-310 1 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-310 2 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 3 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 4 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 5 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2018-11-24   
231-310 6 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 7 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-310 8 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-310 9 GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-406 A GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-406 0 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-12   
231-406 1   351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 348   2024-04-21   
231-406 5 GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-04-09   
231-826 A FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 0 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 1 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 2 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 3 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 4 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 5 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 6 GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2015-10-18   
231-826 7 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 8 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      
231-826 9 FLMOMIXIDS0  0705 CENTURY TEL CO NORTHERN MICHIGAN DBA CENTURYLINK 348      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.