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: DNDLMDDNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-282 A Dundalk MD 9212 VERIZON MARYLAND, INC. 238      
410-284 A Dundalk MD 9212 VERIZON MARYLAND, INC. 238      
410-285 A Dundalk MD 9212 VERIZON MARYLAND, INC. 238      
410-288 A Dundalk MD 9212 VERIZON MARYLAND, INC. 238      
410-631 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 0 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-631 9 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-633 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-879 A Dundalk MD 9212 VERIZON MARYLAND, INC. 238      
443-879 5 Dundalk MD 9212 VERIZON MARYLAND, INC. 238   2003-08-09   

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

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