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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Switch: TCSNAZXGDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-725 A Sierra Vista AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2024-02-22   
520-729 3 Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2015-07-29   
520-809 6 Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2015-02-24   
520-833 5 Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2015-10-26   
520-917 A Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668      
520-918 A Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668      
520-987 4 Nogales AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2017-08-04   
520-988 3 Nogales AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2006-08-11   
520-989 5 Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2017-06-08   
520-999 4 Tucson AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2013-10-17   
928-235 3 Safford AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2010-08-20   
928-961 8 Globe AZ 7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2018-02-22   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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