Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 339 [Rate centres in NPA 339] [Dial plan for NPA 339]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
339-399 A Sharon MA SOVLMAABAMD  965H FRACTEL, LLC 128      
339-399 0 Sharon MA   624H ONVOY SPECTRUM, LLC 128   2021-11-27   
339-399 1 Sharon MA   624H ONVOY SPECTRUM, LLC 128   2021-11-27   
339-399 3 Sharon MA   624H ONVOY SPECTRUM, LLC 128   2021-09-09   
339-399 4 Sharon MA   892D ONVOY, LLC - MA 128   2021-11-13   
339-399 5 Sharon MA   892D ONVOY, LLC - MA 128   2021-11-13   
339-399 8 Sharon MA   490J DISH WIRELESS, LLC 128   2023-06-05   
339-399 9 Sharon MA   965H FRACTEL, LLC 128   2021-06-13   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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