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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-420 A Bel Air MD BLARMDBLDS0  9212 VERIZON MARYLAND, INC. 238      
410-420 0 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 1 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 2 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 3 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 4 Bel Air MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-420 5 Bel Air MD   318J COMCAST IP PHONE, LLC 238   2020-05-29   
410-420 6 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 7 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 8 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      
410-420 9 Bel Air MD   9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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