Local Calling Guide

Area code/prefix search

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NPA: 939 [Rate centres in NPA 939] [Dial plan for NPA 939]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-579 A Caguas PR SNJOPRECCM0  639J LIBERTY MOBILE PUERTO RICO INC. 820      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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