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: FIVLMDFRRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-746 A Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 4 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 5 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 6 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 7 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 8 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      
301-746 9 Friendsville MD 9212 VERIZON MARYLAND, INC. 240      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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