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: ALXNVAGBPS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-808 A Washington Zone 1 DC 6135 COMCAST PHONE OF DC, LLC - DC 236   2012-04-09   
301-377 A Laurel MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-383 A Washington Zone 14 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-448 A Washington Zone 3 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-456 A Washington Zone 5 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-477 A Washington Zone 13 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-484 A Washington Zone 4 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
301-485 A Washington Zone 6 MD 107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236      
540-628 A Stafford VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236   2008-10-13   
571-308 A Washington Zone 19 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-313 A Herndon VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-319 A Washington Zone 8 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-379 A Manassas VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-527 A Washington Zone 8 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-659 A Dale City VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
571-970 A Washington Zone 8 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-498 A Occoquan VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-566 A Washington Zone 8 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-567 A Washington Zone 8 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-635 A Washington Zone 17 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-638 A Washington Zone 19 VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-743 A Haymarket VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-774 A Herndon VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      
703-789 A Manassas VA 7773 COMCAST PHONE OF VIRGINIA, INC. - VA 236      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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