Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-376 A Vienna MD VINNMDVNRS0  9212 VERIZON MARYLAND, INC. 242      
410-376 0 Vienna MD VINNMDVNRS0  9212 VERIZON MARYLAND, INC. 242      
410-376 1 Vienna MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-376 2 Vienna MD VINNMDVNRS0  9212 VERIZON MARYLAND, INC. 242      
410-376 3 Vienna MD VINNMDVNRS0  9212 VERIZON MARYLAND, INC. 242      
410-376 4 Vienna MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
410-376 5 Vienna MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2018-09-13   
410-376 6 Vienna MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
410-376 7 Vienna MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2006-11-07   
410-376 8 Vienna MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-376 9 Vienna MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2024-02-14   

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

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