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: FRDRMDFRDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-662 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-663 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-668 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 0 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 3 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 4 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 5 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 6 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 7 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 8 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-682 9 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-694 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-695 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-696 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-698 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-815 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 A Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 0 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 1 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 2 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 3 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 4 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 5 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 6 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 7 Frederick MD 9212 VERIZON MARYLAND, INC. 240      
301-846 9 Frederick MD 9212 VERIZON MARYLAND, INC. 240      

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

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