Where is first texoma national bank located? First Texoma National Bank is located in Durant, OK, United States and is part of the Depository Credit Intermediation Industry. First Texoma National Bank has 73 total employees across all of its locations and generates $10.56 million in sales (USD). There are 6 companies in the First Texoma National Bank corporate family.Why choose first texoma national bank for a personal loan? The ability to meet life's challenges and opportunities are yours with a personal loan from First Texoma National Bank. Designed to offer you affordable fixed monthly payments and low rates, our personal loans can be used to finance major purchases or cover unexpected expenses.How do i find my routing number for first national? You can find your routing number at the bottom of your checks on the left side. First National Bank Routing Number: 043318092 How do I report unauthorized transactions? Please contact your local branch or our Customer Service Center (1-800-555-5455) as quickly as possible during regular business hours to report fraudulent transactions.How do i contact first national bank fnb? Please contact our Call Center (1-800-555-5455) to determine if your branch has this ability. Notices & Disclosures. - For your convenience, First National Bank (FNB) provides links to third party service providers.