Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 407

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-407 A Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 0 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 1 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 2 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 3 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 4 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 5 Tucson AZ   829J PAETEC ITEL, LLC 668   2005-05-05   
520-407 6 Tucson AZ   829J PAETEC ITEL, LLC 668   2005-09-17   
520-407 7 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 8 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      
520-407 9 Tucson AZ TCSNAZFWDS0  9636 QWEST CORPORATION 668      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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