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: TCSNAZNODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-218 A Tucson AZ 9636 QWEST CORPORATION 668      
520-219 A Tucson AZ 9636 QWEST CORPORATION 668      
520-225 A Tucson AZ 9636 QWEST CORPORATION 668      
520-225 1 Tucson AZ 9636 QWEST CORPORATION 668      
520-225 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-225 3 Tucson AZ 9636 QWEST CORPORATION 668      
520-225 4 Tucson AZ 9636 QWEST CORPORATION 668      
520-225 5 Tucson AZ 9636 QWEST CORPORATION 668      
520-225 6 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 A Tucson AZ 9636 QWEST CORPORATION 668      
520-229 0 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 1 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 3 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 4 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 5 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 6 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 8 Tucson AZ 9636 QWEST CORPORATION 668      
520-229 9 Tucson AZ 9636 QWEST CORPORATION 668      
520-291 A Tucson AZ 9636 QWEST CORPORATION 668      
520-297 A Tucson AZ 9636 QWEST CORPORATION 668      
520-410 A Tucson AZ 9636 QWEST CORPORATION 668      
520-469 A Tucson AZ 9636 QWEST CORPORATION 668      
520-489 A Tucson AZ 9636 QWEST CORPORATION 668      
520-498 A Tucson AZ 9636 QWEST CORPORATION 668      
520-516 A Tucson AZ 9636 QWEST CORPORATION 668      
520-531 A Tucson AZ 9636 QWEST CORPORATION 668      
520-544 A Tucson AZ 9636 QWEST CORPORATION 668      
520-566 A Tucson AZ 9636 QWEST CORPORATION 668      
520-575 A Tucson AZ 9636 QWEST CORPORATION 668      
520-712 A Tucson AZ 9636 QWEST CORPORATION 668      
520-742 A Tucson AZ 9636 QWEST CORPORATION 668      
520-793 A Tucson AZ 9636 QWEST CORPORATION 668      
520-797 A Tucson AZ 9636 QWEST CORPORATION 668      
520-877 A Tucson AZ 9636 QWEST CORPORATION 668      
520-878 A Tucson AZ 9636 QWEST CORPORATION 668      
520-878 0 Tucson AZ 9636 QWEST CORPORATION 668      
520-878 1 Tucson AZ 9636 QWEST CORPORATION 668      
520-878 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-878 4 Tucson AZ 9636 QWEST CORPORATION 668      
520-878 9 Tucson AZ 9636 QWEST CORPORATION 668      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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