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: WASHDC126MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-855 A Washington Zone 1 DC 879H BARR TELL USA, INC. - DC 236      
202-855 5 Washington Zone 1 DC 879H BARR TELL USA, INC. - DC 236      
240-302 2 Laurel MD 964H BARR TELL USA, INC. 236      
240-530 5 Waldorf MD 964H BARR TELL USA, INC. 236      
240-557 7 Washington Zone 6 MD 964H BARR TELL USA, INC. 236      
240-563 5 Washington Zone 5 MD 964H BARR TELL USA, INC. 236      
240-590 0 Washington Zone 12 MD 964H BARR TELL USA, INC. 236      
240-661 2 Lexington Park-Great Mills MD 964H BARR TELL USA, INC. 236      
240-805 9 Gaithersburg MD 964H BARR TELL USA, INC. 236      
240-906 5 Washington Zone 4 MD 964H BARR TELL USA, INC. 236      
301-235 5 Washington Zone 16 MD 964H BARR TELL USA, INC. 236      
301-545 3 Washington Zone 10 MD 964H BARR TELL USA, INC. 236      
301-578 3 Washington Zone 3 MD 964H BARR TELL USA, INC. 236      
301-603 5 Washington Zone 11 MD 964H BARR TELL USA, INC. 236      
301-941 5 Washington Zone 2 MD 964H BARR TELL USA, INC. 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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