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: CRDFMDCDRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-399 A Bel Air MD 9212 VERIZON MARYLAND, INC. 238      
410-399 0 Bel Air MD 9212 VERIZON MARYLAND, INC. 238      
410-452 A Cardiff MD 9212 VERIZON MARYLAND, INC. 238      
410-452 0 Cardiff MD 9212 VERIZON MARYLAND, INC. 238      
410-452 5 Cardiff MD 9212 VERIZON MARYLAND, INC. 238      
410-452 8 Cardiff MD 9212 VERIZON MARYLAND, INC. 238      
410-452 9 Cardiff MD 9212 VERIZON MARYLAND, INC. 238      
410-983 A Fork MD 9212 VERIZON MARYLAND, INC. 238      
410-983 0 Fork MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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