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: 606

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
939-606 A Mayaguez PR BYMNPRCO0MD  8645 SUNCOM DBA T-MOBILE USA 820      
939-606 0 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2021-11-25   
939-606 1 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2021-11-25   
939-606 2 Mayaguez PR   091J LUMEN TECHNOLOGIES PUERTO RICO, LLC 820   2020-03-08   
939-606 3 Mayaguez PR   559F NEUTRAL TANDEM - PR 820   2021-07-31   
939-606 4 Mayaguez PR   559F NEUTRAL TANDEM - PR 820   2021-07-31   
939-606 5 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2021-11-25   
939-606 6 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2021-11-25   
939-606 7 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2022-12-23   
939-606 9 Mayaguez PR   8645 SUNCOM DBA T-MOBILE USA 820   2018-06-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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