Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-315 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-384 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-421 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-431 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-432 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-518 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-541 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-544 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-647 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      
410-975 A Severna Park MD 9212 VERIZON MARYLAND, INC. 238      

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

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