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: 983

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-983 A Fork MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-983 0 Fork MD   9212 VERIZON MARYLAND, INC. 238      
410-983 1 Fork MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-11-04   
410-983 3 Fork MD   876D ONVOY, LLC - MD 238   2014-09-27   
410-983 6 Fork MD   876D ONVOY, LLC - MD 238   2014-09-27   
410-983 9 Fork MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-06-06   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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