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
301-816 A Washington Zone 11 MD RKVLMDMRDS0  236    
301-817 A Washington Zone 5 MD STLDMDSLDS0  236    
301-819 A Washington Zone 3 MD SLSPMDSSDS0  236    
301-821 8 Laurel MD   236 2005-11-17   
301-824 A Smithsburg MD SMBGMDSMRS0  240    
301-824 1 Smithsburg MD   240    
301-824 2 Smithsburg MD   240    
301-824 3 Smithsburg MD   240    
301-824 4 Smithsburg MD   240    
301-824 5 Smithsburg MD   240    
301-824 6 Smithsburg MD   240    
301-824 7 Smithsburg MD   240    
301-825 7 Washington Zone 10 MD   236 2006-12-27   
301-826 A Lexington Park-Great Mills MD LXPKMDLXDS0  236    
301-827 A Washington Zone 2 MD BTHSMDRPDS0  236    
301-828 4 Washington Zone 2 MD   236 2005-04-22   
301-829 A Mount Airy MD MTARMDMARS1  240    
301-829 0 Mount Airy MD   240    
301-829 1 Mount Airy MD   240    
301-829 2 Mount Airy MD   240    
301-829 3 Mount Airy MD   240    
301-829 4 Mount Airy MD   240    
301-829 5 Mount Airy MD   240    
301-829 6 Mount Airy MD   240    
301-829 7 Mount Airy MD   240 2001-11-03   
301-829 8 Mount Airy MD   240    
301-829 9 Mount Airy MD   240    
301-831 A Damascus (Hagerstown LATA) MD NWMRMDNERS3  240    
301-834 A Brunswick MD BRWKMDBRRS0  240    
301-834 3 Brunswick MD   240    
301-834 4 Brunswick MD   240    
301-834 5 Brunswick MD   240    
301-834 6 Brunswick MD   240    
301-834 7 Brunswick MD   240    
301-834 8 Brunswick MD   240    
301-834 9 Brunswick MD   240    
301-836 A Washington Zone 5 MD TMHLMDTHDS0  236    
301-836 7 Washington Zone 5 MD   236    
301-838 A Washington Zone 10 MD RKVLMDRVDS1  236    
301-838 0 Washington Zone 10 MD   236    
301-838 2 Washington Zone 10 MD   236    
301-838 3 Washington Zone 10 MD   236    
301-838 4 Washington Zone 10 MD   236    
301-838 5 Washington Zone 10 MD   236    
301-838 6 Washington Zone 10 MD   236    
301-838 7 Washington Zone 10 MD   236    
301-838 8 Washington Zone 10 MD   236    
301-838 9 Washington Zone 10 MD   236    
301-839 A Washington Zone 6 MD OXHLMDOHDS0  236    
301-840 A Washington Zone 10 MD GTBGMDGBPS0  236    

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Last updated: Sat, 01 Dec 2018 01:51:37 UTC

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