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.

Cadillac, MI

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
231-876 4   9323 MICHIGAN BELL TEL CO 348      
231-876 5   9323 MICHIGAN BELL TEL CO 348      
231-876 6   9323 MICHIGAN BELL TEL CO 348      
231-876 7   9323 MICHIGAN BELL TEL CO 348      
231-876 8   543C ONVOY, LLCV - MI 348   2012-12-29   
231-876 9   9323 MICHIGAN BELL TEL CO 348      
231-878 A GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-884 A WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-884 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-884 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-884 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-884 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-09-13   
231-884 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-10-07   
231-884 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-06-21   
231-884 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2009-10-12   
231-884 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2010-09-11   
231-884 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2011-03-14   
231-884 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2010-02-10   
231-920 A WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348      
231-942 A GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-942 0   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2018-12-03   
231-942 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2006-05-21   
231-942 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2009-10-19   
231-942 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2009-10-19   
231-942 4   991E BANDWIDTH.COM CLEC, LLC - MI 348   2011-08-15   
231-942 5   516C AT&T CORP. 348   2011-08-23   
231-942 6   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2011-09-12   
231-942 7   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2008-09-19   
231-942 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2007-02-01   
231-942 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2007-02-01   
231-968 A GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      
231-968 0   991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-11-18   
231-968 1   991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-11-18   
231-968 2   145J TERRA NOVA TELECOM INC. 348   2024-05-27   
231-968 3   5562 METROPCS, INC. 348   2021-11-19   
231-968 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2025-04-24   
231-968 8   5562 METROPCS, INC. 348   2021-11-19   

<< 1 2

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.