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: WASHDCRKDS3

1 2 3 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-222 0 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2002-05-25   
202-249 3 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2002-10-21   
202-249 4 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2002-10-21   
202-249 5 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2002-10-21   
202-355 9 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2006-03-12   
202-464 A Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236      
202-489 0 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2006-03-12   
202-600 7 Washington Zone 1 DC 4937 ALLEGIANCE TELECOM OF THE DISTRICT OF COLUMBIA 236   2010-05-30   
240-200 1 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236   2011-05-13   
240-223 A Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 0 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 1 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 2 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 3 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 4 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 5 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 6 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 8 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-223 9 Washington Zone 2 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 A Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 0 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 1 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 2 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 4 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 5 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-243 9 Gaithersburg MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 A Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 0 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 1 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 2 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 3 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 4 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 5 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 6 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 8 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-247 9 Washington Zone 3 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 A Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 0 Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 1 Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 2 Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 4 Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-260 9 Washington Zone 14 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 A Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 0 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 1 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 2 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 3 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 5 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 6 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      
240-268 7 Washington Zone 10 MD 8992 ALLEGIANCE TELECOM, INC. - MD 236      

1 2 3 >>

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.