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
301-394 A Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-572 A Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 A Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 0 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 1 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 3 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 4 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 6 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 8 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-586 9 Washington Zone 3 MD 9212 VERIZON MARYLAND, INC. 236      
301-595 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-796 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 A Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 0 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 1 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 2 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 3 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 4 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 5 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 6 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 7 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-847 8 Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-890 A Washington Zone 12 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 1 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 2 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 3 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 8 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-902 9 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 0 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 1 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 2 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 3 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 4 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 6 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 7 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 8 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-931 9 Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      
301-937 A Washington Zone 13 MD 9212 VERIZON MARYLAND, INC. 236      

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

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