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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-939 A Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
410-942 A Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
410-942 0 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
410-942 1 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
410-942 7 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
410-942 8 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
443-843 A Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
443-843 5 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
443-843 6 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
443-843 7 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      
443-843 8 Havre de Grace MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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