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apiverve / routinglookup

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Routing Number Lookup is a bank routing number lookup and validation API for US ABA numbers. It checks the check digit, finds the bank name and state, and identifies the routing type and Federal Reserve district, while paid plans add full street addresses, branch details, and replacement numbers.

Package info

github.com/apiverve/routinglookup-api

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Language:C#

pkg:composer/apiverve/routinglookup

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Installs: 2

Dependents: 0

Suggesters: 0

Stars: 0

Open Issues: 0

1.2.3 2026-10-26 14:44 UTC

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MIT c58661e4275ee77748e9304fcdf30bf8b17369ee

apiapiververoutinglookuprouting number lookup apibank routing number lookup apirouting number validation apirouting number apibank routing number api

Published on Packagist.org on 2026-10-26 17:29 UTC

This package is auto-updated.

Last update: 2026-10-26 17:29:50 UTC

README

Routing Number Lookup is a bank routing number lookup and validation API for US ABA numbers. It checks the check digit, finds the bank name and state, and identifies the routing type and Federal Reserve district, while paid plans add full street addresses, branch details, and replacement numbers.

The Routing Number Lookup API provides a simple, reliable way to integrate routing number lookup functionality into your applications. Built for developers who need production-ready routing number lookup capabilities without the complexity of building from scratch.

View API Details →

License: MIT API Status Method Platform

Available on: npm NuGet PyPI RubyGems Packagist Go Dart JitPack

Quick Start

Using JavaScript

async function callRoutingNumberLookupAPI() {
    try {
        const params = new URLSearchParams({
            routing: '121000358'
        });

        const response = await fetch(`https://api.apiverve.com/v1/routinglookup?${params}`, {
            method: 'GET',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE'
            }
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callRoutingNumberLookupAPI();

Using cURL

curl -X GET "https://api.apiverve.com/v1/routinglookup?routing=121000358" \
  -H "x-api-key: YOUR_API_KEY_HERE"

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

Installation

Choose your preferred programming language:

📦 NPM (JavaScript/Node.js)

npm install @apiverve/routinglookup

View NPM Package → | Package Code →

🔷 NuGet (.NET/C#)

dotnet add package APIVerve.API.RoutingNumberLookup

View NuGet Package → | Package Code →

🐍 Python (PyPI)

pip install apiverve-routinglookup

View PyPI Package → | Package Code →

💎 Ruby (RubyGems)

gem install apiverve_routinglookup

View RubyGems Package → | Package Code →

🐘 PHP (Packagist)

composer require apiverve/routinglookup

View Packagist Package → | Package Code →

🎯 Dart (pub.dev)

dart pub add apiverve_routinglookup

View pub.dev Package → | Package Code →

🤖 Android (JitPack)

implementation 'com.github.apiverve:routinglookup-api:1.0.0'

Package Code →

🐹 Go

go get github.com/apiverve/routinglookup-api/go

Package Code →

Why Use This API?

Feature Benefit
Multi-language SDKs Native packages for JavaScript, Python, C#, Go, and Android
Simple Integration Single API key authentication, consistent response format
Production Ready 99.9% uptime SLA, served from 24 global regions
Comprehensive Docs Full examples, OpenAPI spec, and dedicated support

Documentation

What Can You Build?

The Routing Number Lookup API is commonly used for:

  • Web Applications - Add routing number lookup features to your frontend or backend
  • Mobile Apps - Native SDKs for Android development
  • Automation - Integrate with n8n, Zapier, or custom workflows
  • SaaS Products - Enhance your product with routing number lookup capabilities
  • Data Pipelines - Process and analyze data at scale

API Reference

Authentication

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Response Format

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

Example Response

A real response from the Routing Number Lookup API:

{
  "status": "ok",
  "error": null,
  "data": {
    "routing_number": "121000358",
    "office_code": "O",
    "record_type_code": "1",
    "new_routing_number": "000000000",
    "bank": "BANK OF AMERICA, N.A.",
    "address": "8001 VILLA PARK DRIVE",
    "city": "HENRICO",
    "state": "VA",
    "zip": "23228",
    "zip_extension": "0000",
    "country": "US",
    "federal_reserve_district": "San Francisco",
    "federal_reserve_district_number": 12,
    "federal_reserve_states": [
      "AK",
      "AS",
      "AZ",
      "CA",
      "GU",
      "HI",
      "ID",
      "MP",
      "NV",
      "OR",
      "UT",
      "WA"
    ],
    "address_in_district": false,
    "states_served": [
      "CA"
    ],
    "routing_type": "primary",
    "is_valid_checksum": true,
    "routing_analysis": {
      "is_head_office": true,
      "is_branch": false,
      "is_federal_reserve_bank": false,
      "is_active": true,
      "replaced_by": null
    }
  }
}

Support & Community

Contributing

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

Security

For security concerns, please review our Security Policy.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

Built with ❤️ by APIVerve

Copyright © 2026 APIVerve. All rights reserved.