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: ARTNVAARXDY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-808 A Washington Zone 1 DC 318J COMCAST IP PHONE, LLC 236      
240-262 A Lexington Park-Great Mills MD 318J COMCAST IP PHONE, LLC 236      
240-280 A Laurel MD 318J COMCAST IP PHONE, LLC 236      
240-467 A Washington Zone 4 MD 318J COMCAST IP PHONE, LLC 236      
240-483 A Washington Zone 2 MD 318J COMCAST IP PHONE, LLC 236      
240-619 A Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
240-669 A Washington Zone 11 MD 318J COMCAST IP PHONE, LLC 236      
240-770 A Washington Zone 4 MD 318J COMCAST IP PHONE, LLC 236      
240-830 A Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
240-903 A Indian Head MD 318J COMCAST IP PHONE, LLC 236      
301-328 A Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236      
301-377 A Laurel MD 318J COMCAST IP PHONE, LLC 236      
301-383 A Washington Zone 14 MD 318J COMCAST IP PHONE, LLC 236      
301-448 A Washington Zone 3 MD 318J COMCAST IP PHONE, LLC 236      
301-456 A Washington Zone 5 MD 318J COMCAST IP PHONE, LLC 236      
301-477 A Washington Zone 13 MD 318J COMCAST IP PHONE, LLC 236      
301-484 A Washington Zone 4 MD 318J COMCAST IP PHONE, LLC 236      
301-485 A Washington Zone 6 MD 318J COMCAST IP PHONE, LLC 236      
540-628 A Stafford VA 318J COMCAST IP PHONE, LLC 236      
540-699 A Stafford VA 318J COMCAST IP PHONE, LLC 236      
571-208 A Manassas VA 318J COMCAST IP PHONE, LLC 236      
571-308 A Washington Zone 19 VA 318J COMCAST IP PHONE, LLC 236      
571-313 A Herndon VA 318J COMCAST IP PHONE, LLC 236      
571-319 A Washington Zone 8 VA 318J COMCAST IP PHONE, LLC 236      
571-379 A Manassas VA 318J COMCAST IP PHONE, LLC 236      
571-407 A Washington Zone 19 VA 318J COMCAST IP PHONE, LLC 236      
571-527 A Washington Zone 8 VA 318J COMCAST IP PHONE, LLC 236      
571-659 A Dale City VA 318J COMCAST IP PHONE, LLC 236      
571-970 A Washington Zone 8 VA 318J COMCAST IP PHONE, LLC 236      
703-498 A Occoquan VA 318J COMCAST IP PHONE, LLC 236      
703-566 A Washington Zone 8 VA 318J COMCAST IP PHONE, LLC 236      
703-567 A Washington Zone 8 VA 318J COMCAST IP PHONE, LLC 236      
703-635 A Washington Zone 17 VA 318J COMCAST IP PHONE, LLC 236      
703-638 A Washington Zone 19 VA 318J COMCAST IP PHONE, LLC 236      
703-743 A Haymarket VA 318J COMCAST IP PHONE, LLC 236      
703-774 A Herndon VA 318J COMCAST IP PHONE, LLC 236      
703-789 A Manassas VA 318J COMCAST IP PHONE, LLC 236      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.