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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 9212 VERIZON MARYLAND, INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
301-689 A Frostburg MD FSBGMDFSDS0  240      
301-689 0 Frostburg MD   240      
301-689 1 Frostburg MD   240      
301-689 2 Frostburg MD   240      
301-689 3 Frostburg MD   240      
301-689 5 Frostburg MD   240      
301-689 6 Frostburg MD   240      
301-689 7 Frostburg MD   240      
301-689 8 Frostburg MD   240      
301-689 9 Frostburg MD   240      
301-694 A Frederick MD FRDRMDFRDS1  240      
301-695 A Frederick MD FRDRMDFRDS1  240      
301-696 A Frederick MD FRDRMDFRDS1  240      
301-698 A Frederick MD FRDRMDFRDS1  240      
301-699 A Washington Zone 4 MD HYVLMDHYDS0  236      
301-702 A Washington Zone 5 MD TMHLMDTHDS0  236      
301-703 4 Mount Airy MD   240   2004-11-17   
301-705 A Waldorf MD WDRFMDWDDS0  236      
301-705 0 Waldorf MD   236      
301-705 2 Waldorf MD   236      
301-705 3 Waldorf MD   236      
301-705 4 Waldorf MD   236      
301-705 5 Waldorf MD   236      
301-705 6 Waldorf MD   236      
301-705 7 Waldorf MD   236      
301-705 8 Waldorf MD   236      
301-705 9 Waldorf MD   236      
301-713 A Washington Zone 3 MD SLSPMDSSDSS  236      
301-714 A Hagerstown MD HGTWMDHGDS0  240      
301-714 0 Hagerstown MD   240      
301-714 1 Hagerstown MD   240      
301-714 2 Hagerstown MD   240      
301-714 3 Hagerstown MD   240      
301-714 4 Hagerstown MD   240      
301-714 5 Hagerstown MD   240      
301-714 6 Hagerstown MD   240      
301-714 7 Hagerstown MD   240      
301-714 9 Hagerstown MD   240      
301-716 A Washington Zone 13 MD MRKKMDMKDS0  236      
301-718 A Washington Zone 2 MD CHCHMDBEDS0  236      
301-721 A Washington Zone 10 MD GTBGMDGBPS0  236      
301-722 A Cumberland MD CMLDMDCMDS0  240      
301-723 A Cumberland MD CMLDMDCMDS0  240      
301-723 2 Cumberland MD   240      
301-723 3 Cumberland MD   240      
301-723 4 Cumberland MD   240      
301-723 5 Cumberland MD   240      
301-723 6 Cumberland MD   240      
301-723 8 Cumberland MD   240      
301-723 9 Cumberland MD   240      

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

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