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: BRKLMDBKRP0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-350 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-350 0 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-350 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-350 3 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-350 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-350 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-354 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-355 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-609 A Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-609 0 Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-609 1 Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-609 2 Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-636 A Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-789 A Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
410-851 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
443-792 A Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238      
443-792 2 Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238   2007-11-17   
443-792 3 Brooklyn Park-Linthicum MD 9212 VERIZON MARYLAND, INC. 238   2007-11-17   

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

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