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: RKVLMDRVDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-610 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-610 8 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-610 9 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-738 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-762 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-825 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2006-12-27   
301-838 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 0 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 2 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 3 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 4 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 5 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 6 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 7 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 8 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-838 9 Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      

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

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