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: TCSNAZMAX0Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-372 0 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-10-25   
520-372 1 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-11-22   
520-372 9 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-11-22   
520-416 0 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-11-22   
520-416 8 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-11-22   
520-416 9 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2019-11-22   
520-809 A Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668      
520-809 9 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2015-02-21   
520-965 6 Tucson AZ 890G INTRADO COMMUNICATIONS, LLC 668   2016-08-19   

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

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