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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-318 A Tucson AZ 9636 QWEST CORPORATION 668      
520-319 A Tucson AZ 9636 QWEST CORPORATION 668      
520-320 A Tucson AZ 9636 QWEST CORPORATION 668      
520-321 A Tucson AZ 9636 QWEST CORPORATION 668      
520-322 A Tucson AZ 9636 QWEST CORPORATION 668      
520-323 A Tucson AZ 9636 QWEST CORPORATION 668      
520-324 A Tucson AZ 9636 QWEST CORPORATION 668      
520-325 A Tucson AZ 9636 QWEST CORPORATION 668   2024-01-27   
520-326 A Tucson AZ 9636 QWEST CORPORATION 668      
520-327 A Tucson AZ 9636 QWEST CORPORATION 668      
520-396 5 Tucson AZ 9636 QWEST CORPORATION 668   2006-11-20   
520-396 6 Tucson AZ 9636 QWEST CORPORATION 668   2006-11-20   
520-396 7 Tucson AZ 9636 QWEST CORPORATION 668   2006-11-20   
520-784 A Tucson AZ 9636 QWEST CORPORATION 668      
520-784 0 Tucson AZ 9636 QWEST CORPORATION 668      
520-784 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-784 5 Tucson AZ 9636 QWEST CORPORATION 668      
520-784 6 Tucson AZ 9636 QWEST CORPORATION 668      
520-784 7 Tucson AZ 9636 QWEST CORPORATION 668      
520-795 A Tucson AZ 9636 QWEST CORPORATION 668      
520-874 A Tucson AZ 9636 QWEST CORPORATION 668      
520-874 0 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 1 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 2 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 3 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 4 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 5 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 6 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 7 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 8 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-874 9 Tucson AZ 9636 QWEST CORPORATION 668   2003-12-01   
520-881 A Tucson AZ 9636 QWEST CORPORATION 668      

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

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