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: HMPSMDHERS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-239 A Reisterstown MD 9212 VERIZON MARYLAND, INC. 238      
410-374 A Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 0 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 1 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 2 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 3 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 4 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 5 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 6 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 8 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
410-374 9 Hampstead MD 9212 VERIZON MARYLAND, INC. 238      
443-507 0 Hampstead MD 9212 VERIZON MARYLAND, INC. 238   2003-10-17   
443-507 5 Hampstead MD 9212 VERIZON MARYLAND, INC. 238   2005-05-27   
443-508 4 Hampstead MD 9212 VERIZON MARYLAND, INC. 238   2004-10-07   

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

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