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: TWSNMDTWDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-249 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-296 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-307 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-321 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-324 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-337 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-339 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-494 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-512 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-583 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-716 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-769 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-821 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-823 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-825 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-828 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-830 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-832 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-847 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-853 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-887 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
410-938 A Towson MD 9212 VERIZON MARYLAND, INC. 238      
443-849 A Towson MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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