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.

Switch: TCSNAZMADS1

Remotes:

Switch Switch name Switch type
TCSNAZMLRS2  MOUNT LEMMON  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-205 A Tucson AZ 9636 QWEST CORPORATION 668      
520-206 A Tucson AZ 9636 QWEST CORPORATION 668      
520-209 A Tucson AZ 9636 QWEST CORPORATION 668      
520-222 A Tucson AZ 9636 QWEST CORPORATION 668      
520-328 A Tucson AZ 9636 QWEST CORPORATION 668      
520-388 A Tucson AZ 9636 QWEST CORPORATION 668      
520-617 A Tucson AZ 9636 QWEST CORPORATION 668      
520-620 A Tucson AZ 9636 QWEST CORPORATION 668      
520-621 A Tucson AZ 9636 QWEST CORPORATION 668      
520-622 A Tucson AZ 9636 QWEST CORPORATION 668      
520-623 A Tucson AZ 9636 QWEST CORPORATION 668      
520-624 A Tucson AZ 9636 QWEST CORPORATION 668      
520-626 A Tucson AZ 9636 QWEST CORPORATION 668      
520-628 A Tucson AZ 9636 QWEST CORPORATION 668      
520-629 A Tucson AZ 9636 QWEST CORPORATION 668      
520-638 A Tucson AZ 9636 QWEST CORPORATION 668      
520-670 A Tucson AZ 9636 QWEST CORPORATION 668      
520-695 A Tucson AZ 9636 QWEST CORPORATION 668      
520-724 A Tucson AZ 9636 QWEST CORPORATION 668      
520-740 A Tucson AZ 9636 QWEST CORPORATION 668      
520-770 A Tucson AZ 9636 QWEST CORPORATION 668      
520-791 A Tucson AZ 9636 QWEST CORPORATION 668      
520-792 A Tucson AZ 9636 QWEST CORPORATION 668      
520-798 A Tucson AZ 9636 QWEST CORPORATION 668      
520-838 A Tucson AZ 9636 QWEST CORPORATION 668      
520-872 A Tucson AZ 9636 QWEST CORPORATION 668      
520-879 A Tucson AZ 9636 QWEST CORPORATION 668      
520-880 A Tucson AZ 9636 QWEST CORPORATION 668      
520-882 A Tucson AZ 9636 QWEST CORPORATION 668      
520-884 A Tucson AZ 9636 QWEST CORPORATION 668      
520-903 A Tucson AZ 9636 QWEST CORPORATION 668      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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