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.

Three Oaks, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
269-237 A GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
269-237 0   543C ONVOY, LLCV - MI 348   2016-05-02   
269-237 1   543C ONVOY, LLCV - MI 348   2016-05-02   
269-237 2   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2020-03-19   
269-237 3   624H ONVOY SPECTRUM, LLC 348   2021-06-20   
269-237 4   624H ONVOY SPECTRUM, LLC 348   2021-11-22   
269-237 5   624H ONVOY SPECTRUM, LLC 348   2021-11-22   
269-237 6   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2020-08-27   
269-237 8   516J TON80 COMMUNICATIONS, LLC 348   2022-02-03   
269-398 A GDRPMIBL57Z  7421 AT&T - LOCAL 348      
269-398 9   7421 AT&T - LOCAL 348   2022-10-21   
269-645 A   817J INTERACTIVE SERVICES NETWORK, INC. 348      
269-756 A THOKMIMNRSA  9323 MICHIGAN BELL TEL CO 348      
269-756 0   2550 123.NET, LLC 348   2002-12-01   
269-756 1   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2004-07-17   
269-756 2   9323 MICHIGAN BELL TEL CO 348      
269-756 3   9323 MICHIGAN BELL TEL CO 348      
269-756 4   829J PAETEC ITEL, LLC 348   2004-03-02   
269-756 6   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-06   
269-756 7   9323 MICHIGAN BELL TEL CO 348      
269-756 8   3535 ACD TELECOM, INC. - MI 348   2004-10-04   
269-756 9   9323 MICHIGAN BELL TEL CO 348      
269-820 A GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
269-820 0   543C ONVOY, LLCV - MI 348   2013-01-05   
269-820 1   991E BANDWIDTH.COM CLEC, LLC - MI 348   2014-10-19   
269-820 2   318J COMCAST IP PHONE, LLC 348   2006-10-08   
269-820 3   543C ONVOY, LLCV - MI 348   2012-05-27   
269-820 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-01-05   
269-820 5   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2012-12-10   
269-820 6   516C AT&T CORP. 348   2013-11-08   
269-820 7   508J CENTURYLINK COMMUNICATIONS, LLC 348   2015-09-19   
269-820 8   543C ONVOY, LLCV - MI 348   2013-03-18   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.