The District of Columbia Office of Notary Commissions and Authentications (ONCA)
9 am to 1 pm, Monday-Friday, except holidays
899 North Capitol Street, NE, Suite 8100, Washington, DC 20002

202-727-3117

Please contact [email protected] for more information.

ONCA will be closed Monday, October 12, 2026 in observance of a federal holiday.