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: WASHDCSWXZZ

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-499 0 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-499 1 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-499 2 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-499 3 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-499 7 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-499 9 Washington Zone 10 MD 829J PAETEC ITEL, LLC 236      
240-507 1 Washington Zone 2 MD 829J PAETEC ITEL, LLC 236   2008-12-18   
240-514 A Washington Zone 11 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-514 0 Washington Zone 11 MD 829J PAETEC ITEL, LLC 236      
240-514 1 Washington Zone 11 MD 829J PAETEC ITEL, LLC 236      
240-514 2 Washington Zone 11 MD 829J PAETEC ITEL, LLC 236      
240-514 3 Washington Zone 11 MD 829J PAETEC ITEL, LLC 236      
240-514 5 Washington Zone 11 MD 829J PAETEC ITEL, LLC 236      
240-516 A Washington Zone 12 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-516 0 Washington Zone 12 MD 829J PAETEC ITEL, LLC 236      
240-516 1 Washington Zone 12 MD 829J PAETEC ITEL, LLC 236      
240-516 2 Washington Zone 12 MD 829J PAETEC ITEL, LLC 236      
240-516 3 Washington Zone 12 MD 829J PAETEC ITEL, LLC 236      
240-516 5 Washington Zone 12 MD 829J PAETEC ITEL, LLC 236      
240-523 1 La Plata MD 829J PAETEC ITEL, LLC 236   2004-02-05   
240-528 5 Hughesville MD 829J PAETEC ITEL, LLC 236   2010-11-29   
240-542 A Washington Zone 13 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-542 0 Washington Zone 13 MD 829J PAETEC ITEL, LLC 236      
240-542 1 Washington Zone 13 MD 829J PAETEC ITEL, LLC 236      
240-542 2 Washington Zone 13 MD 829J PAETEC ITEL, LLC 236      
240-542 3 Washington Zone 13 MD 829J PAETEC ITEL, LLC 236      
240-542 5 Washington Zone 13 MD 829J PAETEC ITEL, LLC 236      
240-544 A Washington Zone 14 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-544 0 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-544 1 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-544 2 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-544 3 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-544 5 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-545 A Washington Zone 15 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-545 0 Washington Zone 15 MD 829J PAETEC ITEL, LLC 236      
240-545 1 Washington Zone 15 MD 829J PAETEC ITEL, LLC 236      
240-545 2 Washington Zone 15 MD 829J PAETEC ITEL, LLC 236      
240-545 3 Washington Zone 15 MD 829J PAETEC ITEL, LLC 236      
240-545 4 Washington Zone 15 MD 829J PAETEC ITEL, LLC 236      
240-546 A Washington Zone 16 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-546 0 Washington Zone 16 MD 829J PAETEC ITEL, LLC 236      
240-546 1 Washington Zone 16 MD 829J PAETEC ITEL, LLC 236      
240-546 2 Washington Zone 16 MD 829J PAETEC ITEL, LLC 236      
240-546 3 Washington Zone 16 MD 829J PAETEC ITEL, LLC 236      
240-546 4 Washington Zone 16 MD 829J PAETEC ITEL, LLC 236      
240-554 6 Laurel MD 829J PAETEC ITEL, LLC 236   2012-06-22   
240-556 A Washington Zone 14 MD 829J PAETEC ITEL, LLC 236   2025-04-02   
240-556 0 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-556 1 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      
240-556 9 Washington Zone 14 MD 829J PAETEC ITEL, LLC 236      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >>

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.