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: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-840 A Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 0 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 1 Reisterstown MD   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
410-840 2 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 3 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 4 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 5 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 6 Reisterstown MD   829J PAETEC ITEL, LLC 238   2005-12-15   
410-840 7 Reisterstown MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
410-840 8 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      
410-840 9 Reisterstown MD WMNSMDWMDS0  9212 VERIZON MARYLAND, INC. 238      

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

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