Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   2016-08-18   
240-302 2 Laurel MD 964H BARR TELL USA, INC. 236   2016-11-30   
240-530 5 Waldorf MD 964H BARR TELL USA, INC. 236   2016-11-30   
240-557 7 Washington Zone 6 MD 964H BARR TELL USA, INC. 236   2018-05-08   
240-563 5 Washington Zone 5 MD 964H BARR TELL USA, INC. 236   2018-05-08   
240-590 0 Washington Zone 12 MD 964H BARR TELL USA, INC. 236   2018-06-01   
240-661 2 Lexington Park-Great Mills MD 964H BARR TELL USA, INC. 236   2016-11-30   
240-805 9 Gaithersburg MD 964H BARR TELL USA, INC. 236   2016-11-30   
240-906 5 Washington Zone 4 MD 964H BARR TELL USA, INC. 236   2018-05-08   
301-235 5 Washington Zone 16 MD 964H BARR TELL USA, INC. 236   2018-05-08   
301-545 3 Washington Zone 10 MD 964H BARR TELL USA, INC. 236   2018-05-08   
301-578 3 Washington Zone 3 MD 964H BARR TELL USA, INC. 236   2018-05-08   
301-603 5 Washington Zone 11 MD 964H BARR TELL USA, INC. 236   2018-05-08   
301-941 5 Washington Zone 2 MD 964H BARR TELL USA, INC. 236   2018-05-08   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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