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.

OCN: 9323 MICHIGAN BELL TEL CO

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
989-964 2 Saginaw MI SGNWMIWSDS1  344      
989-964 4 Saginaw MI SGNWMIWSDS1  344      
989-964 5 Saginaw MI SGNWMIWSDS1  344      
989-964 6 Saginaw MI SGNWMIWSDS1  344      
989-964 7 Saginaw MI SGNWMIWSDS1  344      
989-984 A East Tawas MI ETWSMIMNRSA  344      
989-984 0 East Tawas MI ETWSMIMNRSA  344      
989-984 1 East Tawas MI ETWSMIMNRSA  344      
989-984 2 East Tawas MI ETWSMIMNRSA  344      
989-984 3 East Tawas MI ETWSMIMNRSA  344      

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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