Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-420 A Hagerstown MD HGTWMDHGDS0  9212 VERIZON MARYLAND, INC. 240      
240-420 0 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 1 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 2 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 3 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 4 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 5 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 6 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 7 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      
240-420 8 Hagerstown MD   9212 VERIZON MARYLAND, INC. 240      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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