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: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-374 A Hampstead MD HMPSMDHERS1  9212 VERIZON MARYLAND, INC. 238      
410-374 0 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 1 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 2 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 3 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 4 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 5 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 6 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 7 Hampstead MD   829J PAETEC ITEL, LLC 238   2008-03-13   
410-374 8 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      
410-374 9 Hampstead MD   9212 VERIZON MARYLAND, INC. 238      

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

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