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: 861

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-861 A Tucson AZ TCSNAZMAX3X  6664 SPRINT SPECTRUM L.P. 668      

Last updated: Sun, 29 Nov 2020 13:13:58 UTC

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