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: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-556 A Wyandotte MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-556 0 Wyandotte MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2006-08-13   
734-556 1 Wyandotte MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-556 2 Wyandotte MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2008-07-17   
734-556 3 Wyandotte MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-556 4 Wyandotte MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-556 5 Wyandotte MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-04-03   
734-556 6 Wyandotte MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-05-26   
734-556 7 Wyandotte MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-05-26   
734-556 8 Wyandotte MI SFLDMIMK9MD  145J TERRA NOVA TELECOM INC. 340   2024-10-16   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.