The DISN Customer Contact Center is available twenty four hours a day to assist DISN Customers with questions, escalations, or service issues.
DISN Global Service Center (DGSC)
(800) 554-DISN (3476)
(614) 692-4790
DSN (510) 376-3222
DSN (312) 850-4790
DGSC@csd.disa.mil
DSN Connection Approval Process Inquiries
(703) 882-2086 DSN (312) 381-2086
UCAO-DSN@disa.mil
General DSN Inquiries
(301) 225-2793, DSN 375-2793
(703) 882-0440, DSN 381-0440
Phonedsn@disa.mil
DSN Directory Changes
Contact phonedsn@disa.mil to include your organization in the directory, or to notify us of any changes.