README

Subdomain Finder discovers active subdomains and their resolved IP addresses for any target domain. It checks certificate transparency logs and common hostnames, returning matched hostnames, root A records, and scan completion status.

The Subdomain Finder API provides a simple, reliable way to integrate subdomain finder functionality into your applications. Built for developers who need production-ready subdomain finder capabilities without the complexity of building from scratch.

View API Details →

Available on:

Quick Start

Using JavaScript

async function callSubdomainFinderAPI() {
    try {
        const params = new URLSearchParams({
            domain: 'google.com'
        });

        const response = await fetch(`https://api.apiverve.com/v1/subdomainfinder?${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);
    }
}

callSubdomainFinderAPI();

Using cURL

curl -X GET "https://api.apiverve.com/v1/subdomainfinder?domain=google.com" \
  -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/subdomainfinder

View NPM Package → | Package Code →

🔷 NuGet (.NET/C#)

dotnet add package APIVerve.API.SubdomainFinder

View NuGet Package → | Package Code →

🐍 Python (PyPI)

pip install apiverve-subdomainfinder

View PyPI Package → | Package Code →

💎 Ruby (RubyGems)

gem install apiverve_subdomainfinder

View RubyGems Package → | Package Code →

🐘 PHP (Packagist)

composer require apiverve/subdomainfinder

View Packagist Package → | Package Code →

🎯 Dart (pub.dev)

dart pub add apiverve_subdomainfinder

View pub.dev Package → | Package Code →

🤖 Android (JitPack)

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

Package Code →

🐹 Go

go get github.com/apiverve/subdomainfinder-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

🏠 API Home: Subdomain Finder API
📚 API Reference: docs.apiverve.com/ref/subdomainfinder
📖 OpenAPI Spec: openapi.yaml
💡 Examples: examples/

What Can You Build?

The Subdomain Finder API is commonly used for:

Web Applications - Add subdomain finder 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 subdomain finder 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 Subdomain Finder API:

{
  "status": "ok",
  "error": null,
  "data": {
    "rootDomain": {
      "domain": "paypal.com",
      "records": [
        "151.101.3.1",
        "151.101.195.1",
        "162.159.141.96"
      ]
    },
    "subDomains": [
      {
        "host": "api.paypal.com",
        "records": [
          "66.211.168.123"
        ]
      },
      {
        "host": "mail.paypal.com",
        "records": [
          "159.127.187.12"
        ]
      },
      {
        "host": "admin.paypal.com",
        "records": [
          "173.0.88.10"
        ]
      },
      {
        "host": "smtp.paypal.com",
        "records": [
          "64.4.244.68"
        ]
      },
      {
        "host": "ns2.paypal.com",
        "records": [
          "64.4.244.71"
        ]
      },
      {
        "host": "test.paypal.com",
        "records": [
          "156.59.125.88"
        ]
      },
      {
        "host": "ns1.paypal.com",
        "records": [
          "64.4.244.70"
        ]
      },
      {
        "host": "mx.paypal.com",
        "records": [
          "10.190.3.55"
        ]
      },
      {
        "host": "demo.paypal.com",
        "records": [
          "151.101.1.21",
          "151.101.193.21",
          "151.101.129.21",
          "151.101.65.21"
        ]
      },
      {
        "host": "shop.paypal.com",
        "records": [
          "54.148.26.111",
          "35.80.170.143",
          "54.212.145.128"
        ]
      },
      {
        "host": "www.paypal.com",
        "records": [
          "151.101.193.21",
          "151.101.65.21",
          "151.101.129.21",
          "151.101.1.21"
        ]
      },
      {
        "host": "m.paypal.com",
        "records": [
          "151.101.129.21",
          "151.101.1.21",
          "151.101.193.21",
          "151.101.65.21"
        ]
      },
      {
        "host": "stage.paypal.com",
        "records": [
          "64.4.241.16"
        ]
      },
      {
        "host": "ssl.paypal.com",
        "records": [
          "151.101.65.21",
          "151.101.129.21",
          "151.101.193.21",
          "151.101.1.21"
        ]
      },
      {
        "host": "i.paypal.com",
        "records": [
          "63.140.38.107",
          "63.140.39.244",
          "63.140.39.114",
          "63.140.38.116",
          "63.140.39.254",
          "63.140.39.146",
          "63.140.38.213",
          "63.140.39.214",
          "63.140.39.87",
          "63.140.39.123"
        ]
      },
      {
        "host": "news.paypal.com",
        "records": [
          "192.243.228.1"
        ]
      },
      {
        "host": "autodiscover.paypal.com",
        "records": [
          "52.96.79.120",
          "52.96.79.200",
          "52.96.163.40",
          "52.96.79.248"
        ]
      },
      {
        "host": "dl.paypal.com",
        "records": [
          "216.113.188.115"
        ]
      },
      {
        "host": "connect.paypal.com",
        "records": [
          "151.101.65.21",
          "151.101.129.21",
          "151.101.1.21",
          "151.101.193.21"
        ]
      },
      {
        "host": "sandbox.paypal.com",
        "records": [
          "151.101.195.1",
          "162.159.141.96",
          "151.101.3.1"
        ]
      },
      {
        "host": "training.paypal.com",
        "records": [
          "64.4.254.252"
        ]
      },
      {
        "host": "c.paypal.com",
        "records": [
          "151.101.129.21",
          "151.101.65.21",
          "151.101.193.21",
          "151.101.1.21"
        ]
      },
      {
        "host": "business.paypal.com",
        "records": [
          "104.18.6.168",
          "104.18.7.168"
        ]
      },
      {
        "host": "service.paypal.com",
        "records": [
          "192.243.228.1"
        ]
      },
      {
        "host": "login.paypal.com",
        "records": []
      },
      {
        "host": "t.paypal.com",
        "records": [
          "151.101.3.1",
          "151.101.131.1",
          "151.101.67.1",
          "151.101.195.1"
        ]
      },
      {
        "host": "status.paypal.com",
        "records": [
          "20.69.68.249"
        ]
      },
      {
        "host": "shopping.paypal.com",
        "records": [
          "208.76.140.165"
        ]
      },
      {
        "host": "newsletter.paypal.com",
        "records": [
          "192.243.228.1"
        ]
      },
      {
        "host": "reports.paypal.com",
        "records": [
          "173.0.93.28"
        ]
      },
      {
        "host": "forms.paypal.com",
        "records": [
          "216.113.190.190"
        ]
      },
      {
        "host": "labs.paypal.com",
        "records": [
          "173.0.88.135"
        ]
      },
      {
        "host": "p.paypal.com",
        "records": [
          "151.101.131.1",
          "151.101.67.1",
          "151.101.195.1",
          "151.101.3.1"
        ]
      },
      {
        "host": "transfer.paypal.com",
        "records": [
          "151.101.193.21",
          "151.101.129.21",
          "151.101.65.21",
          "151.101.1.21"
        ]
      },
      {
        "host": "xmpp.paypal.com",
        "records": [
          "173.224.160.144",
          "173.224.160.141",
          "185.97.80.137",
          "185.97.80.136"
        ]
      },
      {
        "host": "manager.paypal.com",
        "records": [
          "173.0.93.191"
        ]
      },
      {
        "host": "developer.paypal.com",
        "records": [
          "151.101.1.21",
          "151.101.193.21",
          "151.101.129.21",
          "151.101.65.21"
        ]
      },
      {
        "host": "account.paypal.com",
        "records": [
          "192.243.228.1"
        ]
      },
      {
        "host": "history.paypal.com",
        "records": [
          "151.101.129.21",
          "151.101.193.21",
          "151.101.65.21",
          "151.101.1.21"
        ]
      },
      {
        "host": "pics.paypal.com",
        "records": [
          "151.101.131.1",
          "151.101.195.1",
          "151.101.67.1",
          "151.101.3.1"
        ]
      },
      {
        "host": "registration.paypal.com",
        "records": [
          "173.0.93.135"
        ]
      },
      {
        "host": "mcp.paypal.com",
        "records": [
          "104.18.7.170",
          "104.18.6.170"
        ]
      },
      {
        "host": "accounts.paypal.com",
        "records": [
          "173.0.93.28"
        ]
      },
      {
        "host": "hotspot.paypal.com",
        "records": [
          "64.4.240.12"
        ]
      },
      {
        "host": "bm.paypal.com",
        "records": [
          "130.211.16.153"
        ]
      },
      {
        "host": "rms.paypal.com",
        "records": [
          "173.0.82.166"
        ]
      },
      {
        "host": "cb.paypal.com",
        "records": [
          "173.0.88.142"
        ]
      }
    ],
    "count": 47,
    "totalFound": 47,
    "complete": true
  }
}

Support & Community

🏠 API Home: Subdomain Finder API
💬 Support: https://apiverve.com/contact
🐛 Issues: GitHub Issues
📖 Documentation: https://docs.apiverve.com
🌐 Website: https://apiverve.com

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

apiverve / subdomainfinder

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README

Quick Start

Using JavaScript

Using cURL

Installation

📦 NPM (JavaScript/Node.js)

🔷 NuGet (.NET/C#)

🐍 Python (PyPI)

💎 Ruby (RubyGems)

🐘 PHP (Packagist)

🎯 Dart (pub.dev)

🤖 Android (JitPack)

🐹 Go

Why Use This API?

Documentation

What Can You Build?

API Reference

Authentication

Response Format

Example Response

Support & Community

Contributing

Security

License

Acknowledgments