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: 890G INTRADO COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
520-372 0 Tucson AZ TCSNAZMAX0Y  668   2019-10-25   
520-372 1 Tucson AZ TCSNAZMAX0Y  668   2019-11-22   
520-372 9 Tucson AZ TCSNAZMAX0Y  668   2019-11-22   
520-416 0 Tucson AZ TCSNAZMAX0Y  668   2019-11-22   
520-416 8 Tucson AZ TCSNAZMAX0Y  668   2019-11-22   
520-416 9 Tucson AZ TCSNAZMAX0Y  668   2019-11-22   
520-809 A Tucson AZ TCSNAZMAX0Y  668      
520-809 9 Tucson AZ TCSNAZMAX0Y  668   2015-02-21   
520-965 6 Tucson AZ TCSNAZMAX0Y  668   2016-08-19   
602-554 A Phoenix AZ PHNXAZMAXHY  666      
602-554 0 Phoenix AZ PHNXAZMAXHY  666   2015-02-21   
602-554 9 Phoenix AZ PHNXAZMAXHY  666   2015-02-21   
602-563 8 Phoenix AZ PHNXAZMAXHY  666   2018-11-22   
602-585 A Phoenix AZ PHNXAZMAXHY  666      
602-585 0 Phoenix AZ PHNXAZMAXHY  666   2015-10-25   
602-585 9 Phoenix AZ PHNXAZMAXHY  666   2015-10-25   
602-691 0 Phoenix AZ PHNXAZMAXHY  666   2019-11-25   
602-691 1 Phoenix AZ PHNXAZMAXHY  666   2019-11-25   
602-691 2 Phoenix AZ PHNXAZMAXHY  666   2019-11-25   

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

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