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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: DRCRMDDCDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-514 A Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-514 7 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-514 9 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 A Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 0 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 1 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 2 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 3 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 4 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 5 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 7 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 8 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-729 9 Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-923 A Millersville MD 9212 VERIZON MARYLAND, INC. 238      
410-987 A Severn MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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