EXHIBIT 21 FIRST NATIONAL OF NEBRASKA. INC. State or Other Jurisdiction of Incorporation or Organization First National Bank of Omaha United States (pursuant to the National Bank Act) Wholly-owned subsidiaries: EFC, Inc. Nebraska SPC, Inc. (doing business as First of Omaha Merchant Processing) Nebraska RPSI, Inc. (doing business as Retreiver Payment Systems, Inc.) Nebraska FIS, Inc. Nebraska First National of Nebraska Community Development Corporation Nebraska First National Credit Corporation Nebraska First National Bank South Dakota United States (pursuant to the National Bank Act) MCV Acceptance Corporation Nebraska Credit Card Finance Corporation Nebraska Data Management Products, Inc. Nebraska First National Bank and Trust Company of United States (pursuant to the National Bank Act) Columbus First National Bank (doing business as United States (pursuant to the National Bank Act) First National Bank of Alliance-Chadron- Gering-North Platte-Scottsbluff) Collection Corporation of America Nebraska Platte Valley State Bank & Trust Company Nebraska (state-chartered bank) The Fremont National Bank and Trust Company United States (pursuant to the National Bank Act) Wholly-owned subsidiary: Nebraska Trust Company, National Association United States (pursuant to the National Bank Act) First National Services Corporation Nebraska First National Bank of Kansas United States (pursuant to the National Bank Act) First National of Colorado, Inc. Delaware Wholly-owned subsidiaries: First National Bank (Fort Collins, Colorado) United States (pursuant to the National Bank Act) Union Colony Bank (Greeley, Colorado) Colorado (state-chartered bank) The Bank in Boulder Colorado (state-chartered bank) Professional Career Services, Inc. Colorado FNC Trust Group, National Association United States (pursuant to the National Bank Act) Platte Valley Finance Company Nebraska First Technology Solutions, Inc. Nebraska Insync Investments, Ltd. (doing business as Information Nebraska Systems, Inc.) First National Buildings, Inc. Nebraska