Bank routing number ยท Antlers, Oklahoma
FirstBank Routing Number (ABA): 103103396
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The FirstBank routing number is 103103396. It is the primary ABA routing transit number on the bank's FFIEC National Information Center record, refreshed here on October 27, 2026.
FirstBank at a glance
It reports no CET1 ratio; its Tier 1 leverage ratio was 10.81% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.
- Total assets, Q2 2026
- $684.3M
- Tier 1 leverage ratio, Q2 2026
- 10.81%
- Deposit insurance
- FDIC
- Regulator
- Federal Reserve
- Domestic offices
- 10 FDIC institution directory, current count
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1901
Full financial profile · Is FirstBank safe? · FirstBank call report · Branch locations
FirstBank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 103103396 | Primary ABA | Active | FFIEC NIC |
Record refreshed here on October 27, 2026. NIC holds one primary number per bank; FirstBank publishes any other numbers it uses itself.
What the digits mean
The first two digits, 10, place this number in the Federal Reserve Bank of Kansas City's district (District 10). Digits five through eight, 0339, identify the institution within that district. The last digit, 6, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.
Before you send money to FirstBank
A routing number tells the payment network which financial institution holds an account. You give it with an account number for ACH transfers through the automated clearing house, such as direct deposit, bill pay and transfers from a checking account, which usually settle in one to two business days. An international wire to a US account normally needs the bank's SWIFT code as well.
Match this number against the one on your FirstBank checks or in its online banking. Ask the bank for wire instructions (www.firstbank-ok.com). Our record does not show whether this number receives wires. The Federal Reserve's E-Payments Routing Directory shows it: its Fedwire participant search lists the numbers that can receive Fedwire transfers, and its FedACH search lists those that receive ACH payments. How to confirm any routing number.
About FirstBank
FirstBank is headquartered in Antlers, Oklahoma and was established in 1901. It reported $684.3M in total assets and $598.3M in deposits for Q2 2026, the 40th largest of the 169 banks headquartered in Oklahoma. It reports 10 domestic offices. Its deposits have been FDIC insured since 1934. Its primary federal regulator is the Federal Reserve.
What the digits in 103103396 mean
The first four digits, 1031, are the Federal Reserve routing symbol. The prefix 10 places the number in the 10th Federal Reserve District (Kansas City). That is also the district where the bank is headquartered. Digits five through eight, 0339, identify the institution within its Federal Reserve district. The last digit, 6, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 5 + 7 x 9 + 12 = 90, a multiple of 10, so 103103396 is a well-formed routing number. A mistyped digit almost always breaks that sum.
What is the FirstBank routing number?
The FirstBank routing number is 103103396. It is the primary ABA routing transit number registered to FirstBank, headquartered in Antlers, OK. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 27, 2026.
What is the FirstBank wire routing number?
This page lists the primary routing number registered to FirstBank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with FirstBank before sending a wire.
Is ABA number 103103396 the routing number for FirstBank?
Yes. It is the primary routing number registered to FirstBank.
Which bank uses routing number 103103396?
It belongs to FirstBank, headquartered in Antlers, OK. It is the bank's primary ABA routing number (FDIC certificate 14331).
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View FirstBank's full profile →
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Regulator records: FDIC BankFind (cert 14331) · FFIEC NIC profile (RSSD 296456)