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: BTHSMDBDDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-299 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-365 A Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-469 A Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 0 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 1 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 3 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 5 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 6 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 8 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-765 9 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 A Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 0 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 1 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 2 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 3 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 4 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 8 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-767 9 Washington Zone 2 MD 9212 VERIZON MARYLAND, INC. 236      
301-983 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      

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

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