2800 Shirlington Rd, Suite 1001 Arlington, VA 22206 Tel: 1-800-933-ASCD (2723) Fax: 703-575-5400
8:00 a.m. to 6:00 p.m. Eastern time, Monday through Friday
Local to the D.C. area,703-578-9600, press 2
Toll-free from U.S. and Canada,1-800-933-ASCD (2723), press 2
All other countries(International Access Code) + 1-703-578-9600, press 2