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
240-582 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
240-582 0 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
240-582 2 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-209 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-239 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-277 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-403 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-436 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 0 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 1 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 2 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 3 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 4 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 5 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 6 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 7 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-454 8 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-699 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-779 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-851 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-851 2 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-851 3 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-851 4 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-851 8 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-852 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-852 2 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-864 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 0 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 1 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 4 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 6 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 8 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-887 9 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-927 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 A Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 0 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 1 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 3 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 4 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 5 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 6 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 7 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 8 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      
301-985 9 Washington Zone 4 MD 9212 VERIZON MARYLAND, INC. 236      

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

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