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: 518

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-518 A Severna Park MD SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-518 0 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-518 1 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-518 2 Severna Park MD   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 3 Severna Park MD   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 4 Severna Park MD   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 5 Severna Park MD   624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 6 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-518 7 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-518 8 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      
410-518 9 Severna Park MD   9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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