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.

NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-388 A Dexter MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-388 0 Dexter MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-01-05   
734-388 1 Dexter MI SFLDMIBV3MD  508J CENTURYLINK COMMUNICATIONS, LLC 340   2014-03-20   
734-388 2 Dexter MI DTRTMIBHMMD  8685 US XCHANGE OF MICHIGAN LLC DBA CHOICE ONE COMM MI 340   2009-10-27   
734-388 3 Dexter MI   145J TERRA NOVA TELECOM INC. 340   2022-08-16   
734-388 4 Dexter MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2012-07-22   
734-388 5 Dexter MI   3535 ACD TELECOM, INC. - MI 340   2005-12-09   
734-388 6 Dexter MI DTRTMIBASMD  516C AT&T CORP. 340   2006-06-30   
734-388 7 Dexter MI DTRTMIBHJMD  506J TWILIO INTERNATIONAL, INC. 340   2021-07-15   
734-388 8 Dexter MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2005-11-08   
734-388 9 Dexter MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2005-11-08   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.