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.

Monroe, MI

1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
734-227 A TROYMIMNXPX  6630 USA MOBILITY WIRELESS, INC. 340      
734-230 A FMHLMIDWDS0  7701 PHONE MICHIGAN 340      
734-230 0   7701 PHONE MICHIGAN 340      
734-230 1   7701 PHONE MICHIGAN 340      
734-230 2   991E BANDWIDTH.COM CLEC, LLC - MI 340   2010-06-27   
734-230 3   7421 AT&T LOCAL 340   2003-11-10   
734-230 4   7701 PHONE MICHIGAN 340      
734-230 5   7701 PHONE MICHIGAN 340      
734-230 6   3535 ACD TELECOM, INC. - MI 340   2005-05-02   
734-230 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2007-08-21   
734-230 8   7701 PHONE MICHIGAN 340      
734-230 9   7701 PHONE MICHIGAN 340      
734-240 A MONRMIMNDS0  9323 AMERITECH MICHIGAN 340      
734-241 A MONRMIMNDS0  9323 AMERITECH MICHIGAN 340      
734-242 A MONRMIMNDS0  9323 AMERITECH MICHIGAN 340      
734-243 A MONRMIMNDS0  9323 AMERITECH MICHIGAN 340      
734-244 A SFLDMIBVDS0  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
734-244 0   2550 123 NET, INC. 340   2003-01-24   
734-244 1   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
734-244 2   6664 SPRINT SPECTRUM L.P. 340   2007-09-11   
734-244 3   6664 SPRINT SPECTRUM L.P. 340   2007-09-11   
734-244 4   351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 340   2009-06-03   
734-244 5   8935 COMCAST PHONE OF MICHIGAN, LLC - MI 340   2005-03-23   
734-244 6   6664 SPRINT SPECTRUM L.P. 340   2005-07-09   
734-244 7   1200 TALK AMERICA INC. - MI 340   2005-07-07   
734-244 8   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2007-07-27   
734-244 9   473D CMC TELECOM, INC. - MI 340   2008-01-11   
734-264 A SFLDMIWKDS0  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 0   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 1   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 2   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 3   543C ONVOY, LLC - MI 340   2020-09-07   
734-264 4   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 5   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 6   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340      
734-264 7   543C ONVOY, LLC - MI 340   2020-09-07   
734-264 8   5562 METRO PCS, INC. 340   2020-07-02   
734-264 9   543C ONVOY, LLC - MI 340   2021-01-08   
734-265 A SFLDMIQJDS1  7279 MCI WORLDCOM COMMUNICATIONS, INC. - MI 340      
734-265 0   991E BANDWIDTH.COM CLEC, LLC - MI 340   2009-03-07   
734-265 1   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-10-09   
734-265 2   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-10-09   
734-265 3   9323 AMERITECH MICHIGAN 340   2003-11-14   
734-265 4   9323 AMERITECH MICHIGAN 340   2003-11-14   
734-265 5   9323 AMERITECH MICHIGAN 340   2003-11-14   
734-265 6   6664 SPRINT SPECTRUM L.P. 340   2004-08-13   
734-265 7   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2015-08-19   
734-265 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2014-10-13   
734-265 9   7279 MCI WORLDCOM COMMUNICATIONS, INC. - MI 340      
734-289 A MONRMINERSA  9323 AMERITECH MICHIGAN 340      

1 2 3 4 5 >>

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.