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: 989 [Rate centres in NPA 989] [Dial plan for NPA 989]

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
989-433 A Rosebush MI RSBHMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-433 0 Rosebush MI RSBHMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-433 1 Rosebush MI SGNWMIATX0X  516C AT&T CORP. 344   2013-02-22   
989-433 2 Rosebush MI RSBHMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-433 4 Rosebush MI MNPLMICFDS1  0127 WINN TELEPHONE COMPANY DBA WINN TELECOM - MI 344   2006-04-15   
989-433 5 Rosebush MI RSBHMIMNRS0  9323 MICHIGAN BELL TEL CO 344      
989-433 6 Rosebush MI SGNWMIECXQX  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 344   2004-11-14   
989-433 7 Rosebush MI SGNWMIFAZMD  2550 123.NET, INC. 344   2005-09-04   
989-433 8 Rosebush MI SGNWMIPA1MD  351D CHARTER FIBERLINK - MICHIGAN, LLC - MI 344   2007-02-25   
989-433 9 Rosebush MI   145J TERRA NOVA TELECOM INC. 344   2022-01-04   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.