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

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-314 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-328 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-453 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-567 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2006-08-26   
240-773 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-777 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
240-826 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236   2007-06-06   
301-217 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-251 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-279 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-294 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-309 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-315 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-340 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-398 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-424 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-517 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-544 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-545 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      
301-610 A 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      
301-838 A Washington Zone 10 MD 9212 VERIZON MARYLAND, INC. 236      

Last updated: Fri, 17 May 2019 00:49:52 UTC

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