Routing Number | Bank Name | Bank Address | Phone Number | Change Date |
| |
| | | |
| 251579319 | ONE COMMUNITY FEDERAL CREDIT UNION | 531 FIFTH STREET, PARKERSBURG, WV 26101-0000 | (304) 485-4066 | 2002-08-16 |
| 061020786 | ONE GEORGIA BANK | SUITE 2610, ATLANTA, GA 30309-0000 | (404) 522-2265 | 2008-06-03 |
| 082007830 | ONE NATIONAL BANK | P.O. BOX 34113, LITTLE ROCK, AR 72201-0000 | (501) 370-4595 | 1997-05-06 |
| 312080970 | ONE SOURCE FEDERAL CREDIT UNION | 8870 GAZELLE DR, EL PASO, TX 79925-5817 | (915) 791-4607 | 2009-07-01 |
| 063292855 | ONE SOUTH BANK | SUITE 4, CHIPLEY, FL 32428-0000 | (850) 415-6870 | 2008-10-30 |
| 307074810 | ONE THIRTEEN CREDIT UNION | 3505 N. CHESTNUT ST., COLORADO SPRINGS, CO 80907-0000 | (719) 632-7118 | 1993-10-20 |
| 283077669 | ONE VISION FEDERAL CREDIT UNION | 206 W LEWIS & CLARK PARKWAY, CLARKSVILLE, IN 47129-0000 | (812) 945-4600 | 2008-06-12 |
| 111025123 | ONE WORLD BANK | 2449 WALNUT HILL, DALLAS, TX 75229-0000 | (972) 243-7775 | 2005-03-29 |
| 121182056 | ONECALIFORNIA BANK FSB | 1438 WEBSTER STREET SUITE 100, OAKLAND, CA 94612-0000 | (510) 550-8412 | 2008-07-23 |
| 221380677 | ONEIDA COUNTY FEDERAL CREDIT UNION | 800 PARK AVENUE, UTICA, NY 13501-0000 | (315) 798-5503 | 2007-07-23 |