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: 964H BARR TELL USA, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-302 2 Laurel MD   236   2016-11-30   
240-530 5 Waldorf MD   236   2016-11-30   
240-557 7 Washington Zone 6 MD   236   2018-05-08   
240-563 5 Washington Zone 5 MD   236   2018-05-08   
240-590 0 Washington Zone 12 MD   236   2018-06-01   
240-661 2 Lexington Park-Great Mills MD   236   2016-11-30   
240-805 9 Gaithersburg MD   236   2016-11-30   
240-906 5 Washington Zone 4 MD   236   2018-05-08   
301-235 5 Washington Zone 16 MD   236   2018-05-08   
301-545 3 Washington Zone 10 MD   236   2018-05-08   
301-578 3 Washington Zone 3 MD   236   2018-05-08   
301-603 5 Washington Zone 11 MD   236   2018-05-08   
301-941 5 Washington Zone 2 MD   236   2018-05-08   
410-204 0 Arbutus MD   238   2016-12-17   
410-406 4 Essex MD   238   2016-12-17   
410-421 2 Severna Park MD   238   2016-12-17   
410-781 5 Ellicott City MD   238   2016-12-17   
410-816 1 Towson MD   238   2016-12-17   
443-450 0 Pikesville MD   238   2016-12-17   
443-490 8 Edgewood MD   238   2016-12-17   
443-495 8 Parkville MD   238   2016-12-17   
443-549 5 Dundalk MD   238   2016-12-17   
443-590 8 Reisterstown MD   238   2016-12-17   
443-645 7 Millersville MD   238   2016-12-17   
443-675 5 Randallstown MD   238   2016-12-17   
443-689 3 Cockeysville MD   238   2016-12-17   
443-698 0 Odenton MD   238   2016-12-17   
443-775 4 Annapolis MD   238   2016-12-17   
443-780 7 Woodlawn MD   238   2016-12-17   
443-795 7 Severn MD   238   2016-12-17   
667-215 1 Elkton MD   238   2016-12-17   
667-240 A Columbia MD   238      
667-240 1 Columbia MD   238   2017-01-21   
667-307 3 Crofton MD   238   2016-12-17   
667-314 A Westminster MD   238      
667-314 1 Westminster MD   238   2016-12-17   
667-352 1 Aberdeen MD   236   2017-01-14   
667-400 A Baltimore MD   238      
667-400 1 Baltimore MD   238   2017-01-08   
667-701 7 Elkridge MD   238   2016-12-17   
667-802 3 Catonsville MD   238   2016-12-17   
667-967 A Glen Burnie MD   238      
667-967 1 Glen Burnie MD   238   2017-01-21   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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