Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Tinian, MP

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
670-433 A TNINNNXADS1  3700 MICRONESIAN TELECOMMUNICATIONS CORPORATION 870      
670-488 A CHLONN01DS0  4974 GUAM WIRELESS TELEPHONE COMPANY, LLC 870      

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

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