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.

Switch: CHCHMDBE1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-270 9 Waldorf MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
240-466 0 Mechanicsville MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
240-901 1 La Plata MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-200 6 Indian Head MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-242 2 Brandywine MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-246 5 Nanjemoy MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-448 4 Washington Zone 3 MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-658 0 Ashton MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-690 3 Leonardtown MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-691 6 Poolesville MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-875 0 Laurel MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
301-886 3 Washington Zone 13 MD 8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      

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

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