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1703 North Beauregard St. Alexandria, VA 22311-1714 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: 1-703-578-9600
Toll-free from U.S. and Canada: 1-800-933-ASCD (2723)
All other countries: (International Access Code) + 1-703-578-9600
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