Local Calling Guide

Area code/prefix search

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

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-557 A Ypsilanti MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-557 0 Ypsilanti MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2004-11-16   
734-557 1 Ypsilanti MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2004-11-16   
734-557 2 Ypsilanti MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2004-11-16   
734-557 3 Ypsilanti MI   145J TERRA NOVA TELECOM INC. 340   2025-10-04   
734-557 4 Ypsilanti MI SFLDMIMK9MD  145J TERRA NOVA TELECOM INC. 340   2024-10-16   
734-557 5 Ypsilanti MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2004-11-16   
734-557 6 Ypsilanti MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2004-11-16   
734-557 7 Ypsilanti MI   490J BOOST SUBSCRIBERCO L.L.C. 340   2026-03-05   
734-557 8 Ypsilanti MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-557 9 Ypsilanti MI   490J BOOST SUBSCRIBERCO L.L.C. 340   2026-08-01   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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