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Routing Number API

The Routing Number API allows you to look up bank information using routing numbers. Our database contains over 28,000 routing numbers from banks across the United States.

Looking up bank codes in other countries? See our Canada Routing Number API, Sort Code API (UK), and BSB API (Australia).

Available endpoints:

(4.4)

From 3,358 users

3,800+

Applications using this API

API Status

Online - All Systems Operational

API Response Times

Average
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/v1/routingnumber GET

https://api.api-ninjas.com/v1/routingnumber

Returns detailed information about a bank based on its routing number.

Parameters

  • routing_number  required

    The 9-digit routing number of the bank to look up.

Headers

  • X-Api-Key  required

    API Key associated with your account.

Response

A JSON array of objects, each containing the following fields, or an error if the request is unsuccessful.

  • bank_name premium only

    The name of the bank.

  • routing_number

    The 9-digit routing number of the bank.

  • street_address premium only

    The street address of the bank.

  • city

    The city of the bank.

  • state

    The state of the bank.

  • zip_code

    The ZIP code of the bank.

  • country

    The country of the bank.

  • county

    The county of the bank.

  • timezone

    The timezone of the bank.

  • latitude

    The latitude of the bank.

  • longitude

    The longitude of the bank.

  • phone_number premium only

    The phone number of the bank.

  • swift_code premium only

    The SWIFT/BIC code of the bank, useful for international wire transfers. May be null if the bank does not participate in SWIFT. See our SWIFT Code API for full SWIFT lookups.

  • ach_supported premium only

    Whether the bank processes FedACH (Automated Clearing House) transactions for this routing number.

  • fedwire_supported premium only

    Whether the bank supports Fedwire (wire transfer) for this routing number.

  • checksum_valid

    Whether the routing number passes ABA routing number checksum validation. This uses the standard Mod 10 checksum algorithm to verify the routing number is structurally valid.

Sample Request Live Demo!

routing_number

Try our APIs in the API playground

Sign up for a free API key to get started — no credit card required.

https://api.api-ninjas.com/v1/routingnumber?routing_number=111000012

Headers

X-Api-KeyLog in or sign up to get your API Key

Sample Response

JSON
[
    {
      bank_name:"BANK OF AMERICA, N.A.",
      routing_number:"111000012",
      street_address:"8001 Villa Park Dr",
      city:"Henrico",
      state:"VA",
      zip_code:"23228",
      country:"USA",
      county:"Henrico",
      timezone:"EST",
      latitude:"37.6255",
      longitude:"-77.4923",
      phone_number:"(800) 446-0135",
      swift_code:"BOFAUS3N",
      ach_supported:true,
      fedwire_supported:true,
      checksum_valid:true
    }
]

Code Examples

1 2 curl -X GET "https://api.api-ninjas.com/v1/routingnumber?routing_number=021000021" \ -H "X-Api-Key: YOUR_API_KEY"

If your programming language is not listed in the Code Example above, you can still make API calls by using a HTTP request library written in your programming language and following the above documentation.

/v1/routingnumbersearch GETPremium Only

https://api.api-ninjas.com/v1/routingnumbersearch

Search for banks and their routing numbers based on location. Returns a list of banks matching the search criteria.

At least one of the parameters listed below is required. Results are ordered by routing number in ascending order. Each request can only return up to 10 results - use the offset parameter to paginate through results.

Bank name matching is not case-sensitive and ignores punctuation, spacing, and a leading "The" (e.g. Bank of America N.A. and BANK OF AMERICA, NA return the same results).

Parameters

  • bank_name  optional

    Bank name to search for.

  • city  optional

    City name to search for banks.

  • state  optional

    Two-letter state code (e.g. CA, NY).

  • zip_code  optional

    5-digit ZIP code to search for banks.

  • swift_code  optional Business and Professional only

    8 or 11 character SWIFT/BIC code (e.g. BOFAUS3N). Returns the US routing numbers of the bank identified by the code. Matching is done at the institution level (first 8 characters). See our SWIFT Code API for the reverse lookup.

  • offset  optional annual subscriptions only

    Number of results to offset for pagination.

Headers

  • X-Api-Key  required

    API Key associated with your account.

Response

A JSON array of objects, each containing the same fields as the previous response , or an error if the request is unsuccessful.

Sample Search Request Live Demo!

bank_name
city
state
zip_code
swift_code
offset

Try our APIs in the API playground

Sign up for a free API key to get started — no credit card required.

https://api.api-ninjas.com/v1/routingnumbersearch?bank_name=Bank+of+America

Headers

X-Api-KeyLog in or sign up to get your API Key

Sample Search Response

JSON
[
    {
      bank_name:"BANK OF AMERICA, N.A.",
      routing_number:"011000138",
      street_address:"8001 Villa Park Dr",
      city:"Henrico",
      state:"VA",
      zip_code:"23228",
      country:"USA",
      county:"Henrico",
      timezone:"EST",
      latitude:"37.6255",
      longitude:"-77.4923",
      phone_number:"(800) 446-0135",
      swift_code:"BOFAUS3N",
      ach_supported:true,
      fedwire_supported:false,
      checksum_valid:true
    },
    {
      bank_name:"BANK OF AMERICA N.A",
      routing_number:"011000206",
      street_address:"PO BOX 27025",
      city:"RICHMOND",
      state:"VA",
      zip_code:"23261",
      country:"USA",
      county:"Richmond City",
      timezone:"EST",
      latitude:"37.5490",
      longitude:"-77.4581",
      phone_number:"(800) 446-0135",
      swift_code:"BOFAUS3N",
      ach_supported:true,
      fedwire_supported:false,
      checksum_valid:true
    },
    {
      bank_name:"BANK OF AMERICA N.A",
      routing_number:"011000390",
      street_address:"PO BOX 27025",
      city:"RICHMOND",
      state:"VA",
      zip_code:"23261",
      country:"USA",
      county:"Richmond City",
      timezone:"EST",
      latitude:"37.5490",
      longitude:"-77.4581",
      phone_number:"(800) 446-0135",
      swift_code:"BOFAUS3N",
      ach_supported:true,
      fedwire_supported:false,
      checksum_valid:true
    },
    "..."
]

Frequently Asked Questions

  • Yes, but you must have a premium subscription. Commercial use of the Routing Number API is not permitted on the free tier. See our pricing page to choose a plan that fits your needs.
  • Sign up for a free account to instantly get your API key, then pass it in the X-Api-Key header on every request. The documentation above includes ready-to-run examples in cURL, Python, JavaScript, Node.js, and more.
  • Your API requests will simply be denied once you hit your monthly quota — you will never be charged more than the plan you signed up for. To increase your quota, you can upgrade your plan any time on our pricing page.
  • The API responds with a standard HTTP status code and a JSON error message describing the problem. See our error codes reference for the full list of codes and how to resolve each one, or contact support if you need help.
  • The Routing Number API offers two GET endpoints: /v1/routingnumber looks up a single bank using a 9-digit routing_number, while /v1/routingnumbersearch (premium only) finds banks by location using parameters like bank_name, city, state, and zip_code. The search endpoint returns up to 10 results per request, and you can paginate with the offset parameter on annual subscriptions.
  • Use the premium /v1/routingnumbersearch endpoint and pass at least one of bank_name, city, state (a two-letter code such as CA or NY), or zip_code (5 digits). Each call returns up to 10 matching banks; see pricing for access to this endpoint and the offset pagination parameter.
  • Each result includes fields such as routing_number, city, state, zip_code, county, timezone, latitude, longitude, and checksum_valid (verified with the standard ABA Mod 10 algorithm), plus premium fields like bank_name, street_address, phone_number, swift_code, ach_supported, and fedwire_supported. The swift_code may be null if the bank does not participate in SWIFT, so use our SWIFT Code API for full SWIFT lookups.
  • No, the Routing Number API covers over 28,000 US bank routing numbers only. For other countries, see our Canada Routing Number API, Sort Code API (UK), BSB API (Australia), or IBAN API.