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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-204 A Arbutus MD ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-204 0 Arbutus MD   964H BARR TELL USA, INC. 238   2016-12-17   
410-204 1 Arbutus MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-21   
410-204 2 Arbutus MD   876D ONVOY, LLC - MD 238   2016-03-09   
410-204 3 Arbutus MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-18   
410-204 4 Arbutus MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-21   
410-204 5 Arbutus MD   876D ONVOY, LLC - MD 238   2016-03-31   
410-204 6 Arbutus MD   9212 VERIZON MARYLAND, INC. 238      
410-204 7 Arbutus MD   9212 VERIZON MARYLAND, INC. 238      
410-204 8 Arbutus MD   318J COMCAST IP PHONE, LLC 238   2015-11-27   
410-204 9 Arbutus MD   515J IP HORIZON LLC 238   2016-01-04   

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

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