Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 671 [Rate centres in NPA 671] [Dial plan for NPA 671]

NXX: 858

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
671-858 A Agana GU HRMNGUAACM0  387C PTI PACIFICA INC. 871      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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