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: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-531 A Whitinsville MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-03-17   
774-531 6 Whitinsville MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2026-01-15   
774-531 7 Whitinsville MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2026-01-14   
774-531 8 Whitinsville MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-07   
774-531 9 Whitinsville MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2024-03-17   

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

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