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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Switch: PKTNMDPKRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-329 2 Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-329 6 Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-343 A Sparks-Glencoe MD 9212 VERIZON MARYLAND, INC. 238      
410-343 0 Sparks-Glencoe MD 9212 VERIZON MARYLAND, INC. 238      
410-343 1 Sparks-Glencoe MD 9212 VERIZON MARYLAND, INC. 238      
410-343 2 Sparks-Glencoe MD 9212 VERIZON MARYLAND, INC. 238      
410-343 3 Sparks-Glencoe MD 9212 VERIZON MARYLAND, INC. 238      
410-357 A Parkton MD 9212 VERIZON MARYLAND, INC. 238      
410-357 0 Parkton MD 9212 VERIZON MARYLAND, INC. 238      
410-357 4 Parkton MD 9212 VERIZON MARYLAND, INC. 238      
410-357 5 Parkton MD 9212 VERIZON MARYLAND, INC. 238      
410-357 8 Parkton MD 9212 VERIZON MARYLAND, INC. 238      
410-357 9 Parkton MD 9212 VERIZON MARYLAND, INC. 238      

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

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