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  4. IPinfo
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IPinfo

The IPinfo API offers a free service for retrieving comprehensive information about IP addresses, making it suitable for various applications requiring IP-related data.

Developed by IPinfo

Live API
99.95%Uptime
120msLatency
750Stars
API KeyAuth
NoCredit Card
RESTStyle
v2Version

Reference

API Endpoints

Endpoints

Available routes, request structures, and code examples.

Retrieves geolocation data for an IP address

Endpoint URL
https://ipinfo.io/{ip}
Code Example
curl -X GET 'https://ipinfo.io/{ip}'
Request Payload
{
  "ip": "8.8.8.8"
}
Expected Response
{
  "ip": "8.8.8.8",
  "city": "Mountain View",
  "region": "California",
  "country": "US"
}
Version:v1
Limit:50,000 requests/month

Integration

Quick Start

cURL ExampleREST
curl -X GET "https://ipinfo.io/ip/8.8.8.8/json"

Docs

Technical Documentation

What this API does

The IPinfo API provides developers with the ability to look up detailed information about IP addresses. This includes geographic location, Internet Service Provider (ISP) details, Autonomous System Number (ASN), timezone, and company data. It enables the integration of IP intelligence into applications, enhancing user experience and functionality.

How it works

This API supports simple HTTP GET requests to retrieve IP data. Developers can easily obtain information using endpoints designed to handle queries for both individual IPs and ASN details. The responses are returned in JSON format, ensuring compatibility with various programming languages and environments.

Authentication

No authentication is required to access the basic features of the IPinfo API. Developers can make requests without needing an API key, facilitating easy integration into applications.

Example usage

  • https://ipinfo.io/{ip} - Retrieve information about a specific IP address.
  • https://ipinfo.io/asn/{asn} - Get details about an Autonomous System based on its ASN.
  • https://ipinfo.io/geo - Retrieve geographical information about the requestor's own IP address.

Limits

IPinfo offers a free tier without the need for a credit card, allowing up to 50,000 requests per month. Further details on rate limits can be found in the documentation.

Ideal use cases

  • Incorporating IP geolocation into web applications for personalized user experiences.
  • Implementing fraud detection mechanisms by analyzing user IP addresses.
  • Enhancing content localization based on geographical IP data.
  • Developing analytics tools that require detailed ISP and ASN data.

Examples

Real-World Applications

  • Geolocation for website visitors to tailor content and UX
  • Fraud detection by analyzing IP and ASN data
  • Enriching customer data with ISP and company info
  • Network monitoring and security with ASN tracking
  • Localizing services and pricing based on timezone and location

Evaluation

Advantages & Limitations

Advantages
  • ✓ Extensive detailed IP data including company and ASN info
  • ✓ Generous free tier with 50,000 monthly requests without credit card
  • ✓ Easy to integrate with simple REST API and JSON responses
  • ✓ Wide language SDK support and active developer community
Limitations
  • ✗ Free tier has rate limits that may not suit very high traffic apps
  • ✗ No built-in AI-driven predictive analytics
  • ✗ Primarily focused on IP intelligence, lacking wider network analysis features
  • ✗ Some advanced features require paid plans

Support

Frequently Asked Questions

Important Notice

Verify Before You Decide

Last verified · Apr 30, 2026

The details on this page — including pricing, features, and availability — are based on our last review and may not reflect the provider's current offering. Providers update their products frequently, sometimes without prior notice.

What may have changed

Pricing Plans
Features & Limits
Availability
Terms & Policies

Always visit the official provider website to confirm the latest pricing, terms, and feature availability before subscribing or integrating.

Check official site

External Resources

Documentation Official Website Pricing Details Postman Collection

API Specifications

v2
Pricing Model
Tiered subscription plans based on request volume
Credit Card
Not Required
Response Formats
JSON
Supported Languages
8 Languages
SDK Support
Python, JavaScript, Ruby, Go, Java, PHP
Rate Limit

50,000 requests per month on free tier, with scalable paid plans

Time to Hello World

Minutes to integrate with API key and example requests

Free Tier

Up to 50,000 requests per month with no credit card required

Best For

Developers needing reliable IP geolocation, ASN, and ISP data for apps

Not Ideal For

Applications requiring AI analysis or non-IP network data

Tags

#fraud-detection#isp#asn#ipinfo#ip-geolocation#privacy#networking#location

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