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: BLTMMDLBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-367 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-466 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-542 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-578 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 0 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-601 9 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-664 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-735 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238   2003-10-18   
410-735 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238   2003-09-26   
410-735 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238   2003-09-26   

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

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