Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 774 [Rate centres in NPA 774] [Dial plan for NPA 774]

NXX: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-599 A Marlboro MA SOVLMAABAMD  965H FRACTEL, LLC 128      
774-599 5 Marlboro MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-27   
774-599 7 Marlboro MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2022-01-27   
774-599 9 Marlboro MA SOVLMAABAMD  965H FRACTEL, LLC 128   2021-09-17   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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