Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 939 [Rate centres in NPA 939] [Dial plan for NPA 939]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-420 A Vega Alta PR BYMNPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820   2025-11-30   
939-420 9 Vega Alta PR BYMNPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820   2025-11-30   

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

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