Routing Number: 103112675

Contact Us at FSNB

Contact Us

At FSNB, we are available to our customers all across the world in the way you feel most comfortable contacting us. Feel free to contact us about any questions, needs or concerns you may have.

Live Customer Service


1-800-749-4583 or
1-580-357-9880
Monday – Friday 7:00 am – 7:00 pm CST
Saturdays 7:00 am – 1:00 pm CST
Closed on Sunday and Federal Holidays

Secure Messaging


1. Log in to your Online Banking
2. Click on the Menu bar at the top left corner of the page
3. Click on Messages icon
4. Click on “create a message”

Live Chat


1. Log in to your Online Banking
2. Click on the Menu bar at the top left corner of the page
3. Click on the Chat icon
4. Fill out the required fields and click on submit
Monday – Friday 7:00 am – 7:00 pm CST
Saturdays 7:00 am – 1:00 pm CST
Closed on Sunday and Federal Holidays

Bank by Phone

IVR (Interactive Voice Response)
1-800-355-2140 or
1-580-355-2184
• Hear account balances
• Hear account transactions
• Hear of impending deposits
• Set up a new PIN #
• Report your Visa checkcard lost or stolen
• Transfer funds between your FSNB accounts
• Increase your daily card spending limit and so much more!

Veterans


A personal military assistant is ready to assist you! Please do not send account number, social security number, or other sensitive account information. For account information please log in to your online banking session and choose the Secure message option.
Email: veterans@fsnb.com
Phone: 1-866-807-9848

Email


General inquiries only. Please do not send account number, social security number, or other sensitive account information. For account information please log in to your online banking session and choose the Secure message option.
fsnb@fsnb.com

By Mail


FSNB N.A.
Box 33009
Fort Sill, Oklahoma 73503-009

Phone Numbers

United States:
1 (580) 357-9880
1 (800) 749-4583
Fax: 1 (580) 355-0641

United Kingdom: 08-082346114
Germany: 0800-1821262
Korea: 00798-14-800-1195
Japan: 0066-33-813302