The Office of Notary Commissions and Authentications (ONCA) will be closed Monday, October 12, 2026 due to a federal holiday.
Notary and Document Authentication Services: 9 am to 1 pm, Monday - Friday, except holidays. 
Address: 899 North Capitol Street, NE, Suite 8100, Washington, DC 20002
Phone: (202) 727-3117