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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-239 0 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 1 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 2 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 5 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 6 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 7 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-239 8 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-241 A Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236      
202-241 0 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 1 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 2 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 3 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 4 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 5 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 6 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 7 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 8 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-241 9 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-01-07   
202-280 7 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-506 8 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
202-506 9 Washington Zone 1 DC 280E YMAX COMMUNICATIONS CORP. - DC 236   2007-06-05   
240-200 6 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-12-03   
240-200 7 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-12-03   
240-200 8 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-12-03   
240-200 9 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-12-03   
240-330 6 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
240-383 4 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
240-479 3 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
240-582 1 Washington Zone 4 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
240-627 7 Washington Zone 11 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
240-627 8 Washington Zone 11 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
240-654 5 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-07-24   
240-654 6 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-07-24   
240-654 8 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-08   
240-654 9 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-08   
240-686 8 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-07-28   
240-706 8 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-11-30   
240-706 9 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-11-30   
240-720 5 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-04-16   
240-765 7 Washington Zone 5 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
240-880 7 Washington Zone 11 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
240-880 8 Washington Zone 11 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-08-31   
301-202 5 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-06-08   
301-202 6 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-06-08   
301-202 7 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-01-15   
301-202 8 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-01-15   
301-202 9 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-01-15   
301-328 2 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 3 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 4 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-328 9 Washington Zone 3 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-355 9 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-02-02   
301-375 5 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-433 4 Washington Zone 5 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-458 7 Washington Zone 4 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-534 A Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236      
301-534 0 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 1 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 2 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 3 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 4 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 5 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 6 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 7 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 8 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-534 9 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-01-06   
301-569 8 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-09-02   
301-618 9 Washington Zone 4 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-684 1 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-684 3 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-684 7 Indian Head MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-09-25   
301-740 6 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-09-02   
301-778 3 Washington Zone 5 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-10-10   
301-836 5 Washington Zone 5 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-02   
301-836 6 Washington Zone 5 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-02   
301-892 7 Washington Zone 4 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-01   
301-892 8 Washington Zone 4 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-01   
301-956 7 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
301-956 8 Gaithersburg MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
301-968 7 Washington Zone 2 MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2010-09-01   
410-705 1 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 3 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 8 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2007-07-28   
410-824 4 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
410-888 7 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
443-329 3 Waterloo (Washington DC LATA) MD 281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
571-210 8 Arcola VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2010-11-30   
571-210 9 Arcola VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2010-11-30   
571-255 1 Washington Zone 8 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-255 2 Washington Zone 8 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-255 3 Washington Zone 8 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-255 5 Washington Zone 8 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-266 7 Herndon VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2008-10-10   
571-266 8 Herndon VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2008-10-10   
571-281 6 Braddock VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-01-19   
571-281 9 Braddock VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-01-19   
571-286 4 Washington Zone 17 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-299 3 Herndon VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2008-10-10   
571-308 7 Washington Zone 19 VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-02-10   
571-339 7 Engleside VA 367E YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA 236   2009-01-19   

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

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