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: 770

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-770 A Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 0 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 1 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 2 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 3 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 4 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 5 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 6 Tucson AZ TCSMAZSJAMD  7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 668      
520-770 7 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 8 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      
520-770 9 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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