ASN Lookup API

ASN Lookup resolves any Autonomous System Number to its registered organization name and numeric identifier. Paid plans add the registry handle, country code, and announced IP range statistics.

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

View API Details →

Method Platform

Available on: JitPack

Quick Start

Using JavaScript

async function callASNLookupAPI() {
    try {
        const params = new URLSearchParams({
            asn: 'AS15169'
        });

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

callASNLookupAPI();

Using cURL

curl -X GET "https://api.apiverve.com/v1/asnlookup?asn=AS15169" \
  -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/asnlookup

View NPM Package → | Package Code →

🔷 NuGet (.NET/C#)

dotnet add package APIVerve.API.ASNLookup

View NuGet Package → | Package Code →

🐍 Python (PyPI)

pip install apiverve-asnlookup

View PyPI Package → | Package Code →

💎 Ruby (RubyGems)

gem install apiverve_asnlookup

View RubyGems Package → | Package Code →

🐘 PHP (Packagist)

composer require apiverve/asnlookup

View Packagist Package → | Package Code →

🎯 Dart (pub.dev)

dart pub add apiverve_asnlookup

View pub.dev Package → | Package Code →

🤖 Android (JitPack)

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

Package Code →

🐹 Go

go get github.com/apiverve/asnlookup-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: ASN Lookup API
📚 API Reference: docs.apiverve.com/ref/asnlookup
📖 OpenAPI Spec: openapi.yaml
💡 Examples: examples/

What Can You Build?

The ASN Lookup API is commonly used for:

Web Applications - Add asn 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 asn 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 ASN Lookup API:

{
  "status": "ok",
  "error": null,
  "data": {
    "asn": "AS15169",
    "simple": "15169",
    "handle": "GOOGLE",
    "description": "Google LLC",
    "country": "US",
    "ipv4RangeCount": 152,
    "ipv6RangeCount": 33,
    "ipv4AddressCount": 1314816
  }
}

Support & Community

🏠 API Home: ASN Lookup 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_asnlookup

Runtime