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.

Southfield, MI

1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
248-200 A FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
248-200 0   829J PAETEC ITEL, LLC 340   2003-11-24   
248-200 1   3535 ACD TELECOM, INC. - MI 340   2005-07-16   
248-200 2   829J PAETEC ITEL, LLC 340   2005-10-04   
248-200 3   829J PAETEC ITEL, LLC 340   2006-04-28   
248-200 4   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2005-03-10   
248-200 5   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-06-01   
248-200 6   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-10-28   
248-200 7   516C AT&T CORP. 340   2006-06-30   
248-200 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-10-28   
248-200 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-10-28   
248-201 A SFLDMIMKMMD  733J WIRETAP TELECOM, LLC. 340      
248-201 0   733J WIRETAP TELECOM, LLC. 340   2023-10-16   
248-201 1   543C ONVOY, LLCV - MI 340   2023-10-18   
248-201 2   624H ONVOY SPECTRUM, LLC 340   2024-05-31   
248-201 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-12-26   
248-201 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-12-26   
248-201 5   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-12-26   
248-201 6   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-12-26   
248-201 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-12-26   
248-201 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-11-29   
248-201 9   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2023-11-29   
248-204 A SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-208 A SFLDMIMNDS1  9323 MICHIGAN BELL TEL CO 340      
248-208 0   9323 MICHIGAN BELL TEL CO 340      
248-208 1   9323 MICHIGAN BELL TEL CO 340      
248-208 2   9323 MICHIGAN BELL TEL CO 340      
248-208 3   9323 MICHIGAN BELL TEL CO 340      
248-208 4   9323 MICHIGAN BELL TEL CO 340      
248-208 5   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-10-19   
248-208 6   9323 MICHIGAN BELL TEL CO 340      
248-208 7   9323 MICHIGAN BELL TEL CO 340      
248-208 8   9323 MICHIGAN BELL TEL CO 340      
248-208 9   9323 MICHIGAN BELL TEL CO 340      
248-213 A SFLDMIMNDS1  9323 MICHIGAN BELL TEL CO 340      
248-213 0   9323 MICHIGAN BELL TEL CO 340      
248-213 1   9323 MICHIGAN BELL TEL CO 340      
248-213 2   9323 MICHIGAN BELL TEL CO 340      
248-213 3   9323 MICHIGAN BELL TEL CO 340      
248-213 4   9323 MICHIGAN BELL TEL CO 340      
248-213 5   9323 MICHIGAN BELL TEL CO 340      
248-213 6   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2008-01-29   
248-213 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2013-07-20   
248-213 8   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2012-10-21   
248-213 9   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2014-03-09   
248-223 A SFLDMIMNDS1  9323 MICHIGAN BELL TEL CO 340      
248-223 0   9323 MICHIGAN BELL TEL CO 340      
248-223 1   9323 MICHIGAN BELL TEL CO 340      
248-223 2   9323 MICHIGAN BELL TEL CO 340      
248-223 3   9323 MICHIGAN BELL TEL CO 340      
248-223 4   9323 MICHIGAN BELL TEL CO 340      
248-223 5   9323 MICHIGAN BELL TEL CO 340      
248-223 6   9323 MICHIGAN BELL TEL CO 340      
248-223 7   046L CLEAR RATE COMMUNICATIONS, LLC 340   2014-08-28   
248-223 8   9323 MICHIGAN BELL TEL CO 340      
248-223 9   9323 MICHIGAN BELL TEL CO 340      
248-226 A SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2018-10-19   
248-226 1   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 2   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 3   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2017-09-04   
248-226 4   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 5   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 6   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 7   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-226 8   9323 MICHIGAN BELL TEL CO 340   2008-12-02   
248-226 9   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-228 A SFLDMIDICA0  2550 123.NET, LLC 340      
248-228 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-10-28   
248-228 1   460K FIRST COMMUNICATIONS, LLC 340   2008-07-11   
248-228 2   991E BANDWIDTH.COM CLEC, LLC - MI 340   2004-03-18   
248-228 3   2550 123.NET, LLC 340   2003-01-24   
248-228 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2006-10-28   
248-228 5   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2007-04-06   
248-228 6   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2007-04-06   
248-228 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2007-05-23   
248-228 8   2550 123.NET, LLC 340   2006-11-24   
248-228 9   2550 123.NET, LLC 340      
248-233 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-234 A SFLDMIBV3MD  508J CENTURYLINK COMMUNICATIONS, LLC 340      
248-234 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2013-05-23   
248-234 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2013-05-23   
248-234 2   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2013-05-23   
248-234 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2013-05-23   
248-234 4   543C ONVOY, LLCV - MI 340   2013-02-04   
248-234 5   961J WOW! INTERNET, CABLE AND PHONE 340   2013-06-28   
248-234 6   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2013-10-21   
248-234 7   508J CENTURYLINK COMMUNICATIONS, LLC 340   2012-10-30   
248-234 8   318J COMCAST IP PHONE, LLC 340   2013-11-18   
248-234 9   9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-03-15   
248-262 A SFLDMIMNDS1  9323 MICHIGAN BELL TEL CO 340      
248-262 0   9323 MICHIGAN BELL TEL CO 340      
248-262 1   9323 MICHIGAN BELL TEL CO 340      
248-262 2   9323 MICHIGAN BELL TEL CO 340      
248-262 3   9323 MICHIGAN BELL TEL CO 340      
248-262 4   9323 MICHIGAN BELL TEL CO 340      
248-262 5   046L CLEAR RATE COMMUNICATIONS, LLC 340   2008-07-12   
248-262 6   9323 MICHIGAN BELL TEL CO 340      
248-262 7   318J COMCAST IP PHONE, LLC 340   2011-08-19   
248-262 8   9323 MICHIGAN BELL TEL CO 340      

1 2 3 4 5 6 7 8 9 10 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.