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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
847-996 7 Libertyville IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-25   
847-996 8 Libertyville IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2005-08-25   
872-249 4 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-11-12   
872-249 5 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-11-12   
872-249 6 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-11-12   
872-249 7 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2019-11-12   
872-345 7 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2021-04-28   
872-345 8 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2021-04-28   
872-899 3 Chicago Zone 01-Calumet IL 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2021-10-22   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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