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: ABRDMDABDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-272 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
410-273 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
410-278 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
410-297 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
410-306 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
410-575 A Fork MD 9212 VERIZON MARYLAND, INC. 238      
410-994 A Edgewood MD 9212 VERIZON MARYLAND, INC. 238      
443-395 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      
443-861 A Aberdeen MD 9212 VERIZON MARYLAND, INC. 236      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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