Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 413 [Rate centres in NPA 413] [Dial plan for NPA 413]

NXX: 933

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-933 A Monroe Bridge MA SPFDMAOIAMD  516J TON80 COMMUNICATIONS, LLC 126      
413-933 1 Monroe Bridge MA   793K TWC IP ENABLED SERVICES, LLC 126   2023-01-06   
413-933 3 Monroe Bridge MA SPFDMAOIAMD  516J TON80 COMMUNICATIONS, LLC 126   2022-04-29   

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

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