Returns bank and location information for a given USA bank routing number. Supply the nine-digit ABA routing number to receive institution name, location, and related details for payment validation and form prefill.

API Features

US institution routing data Returns financial institution name, city, state, and routing details for any valid nine-digit ABA

Single-parameter ABA input Standard nine-digit ABA as one query parameter; minimal integration surface for server or client

Structured JSON response Machine-readable output for validation logic, form prefill, and payment rail checks

One-request lookup Single GET returns institution and location data with no extra round-trips

Pre-transfer checks Confirm institution and location before initiating ACH or wire to cut failed transactions

Live API Demo

API Response (JSON)

{}

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Use Cases

Pre-ACH and direct deposit institution and routing checks
Pre-send wire transfer institution verification
Onboarding and payment forms with institution name prefill
Payroll and accounting systems—institution lookup by ABA
Fintech and banking apps—ABA number verification
Fewer failed ACH and wire transactions via upfront checks

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Lookup Routing Number

API Features

Live API Demo

API Response (JSON)

Use Cases