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ip.app

Geocoding

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IP, ASN, geolocation, timezone, security, user-agent in plain text, JSON or HTTP headers.

About ip.app

ip.app is a free API for retrieving a client's public IP address and related request metadata. It supports GET, POST, and HEAD methods and returns data in plain text, JSON, or HTTP header formats, with the detected IP address and IP version always included via the x-ipapp-ip and x-ipapp-ip-version headers regardless of endpoint or format used.

The service exposes multiple endpoints beyond the root IP lookup: /asn for the ASN and organization associated with the requesting IP, /headers for echoing back the HTTP headers sent by the client, /loc for location details, /sec for security and bot-detection information, /tz for timezone, /ua for the user-agent string, and /whereami for geolocation coordinates compatible with the Mozilla Location Service API. Usage examples are provided for cURL, wget, Python, JavaScript, PHP, Perl, Ruby, PowerShell, C#, Swift, Dart/Flutter, Rust, HTTPie, and raw netcat/HTTP requests.

The product is aimed at developers who need a simple, ad-free and tracker-free way to programmatically determine an IP address or inspect request metadata from scripts, servers, or applications, and it also documents an OpenAPI specification, an MCP server, and a Python package for integration.

Key features

Returns the requesting client's public IPv4 or IPv6 address
Provides ASN lookup for the current IP address
Returns location, timezone, and geolocation coordinates (whereami endpoint)
Bot detection and security information via the /sec endpoint
Returns HTTP headers and User-Agent sent by the client
Supports plain text, JSON, and HTTP header response formats via GET, POST, and HEAD

Frequently asked questions

Is ip.app free to use?

Yes, it is described as a free and easy way to check your current IP address and related information with no ads or trackers.

What response formats and HTTP methods does the API support?

It supports plain text and JSON responses, and can be queried using GET, POST, or HEAD methods, with the IP address always available in HTTP headers.

What data can I retrieve besides the IP address?

You can retrieve ASN, location, timezone, security/bot detection info, User-Agent, HTTP headers, and geolocation coordinates via dedicated endpoints.

Does it offer client libraries or an OpenAPI spec?

Yes, it provides an OpenAPI Specification, an MCP server, and a Python package.

Who is this API for?

It is for developers who need to programmatically check public IP addresses and related network/client information, usable from languages like Python, JavaScript, PHP, Ruby, and more via simple HTTP requests.

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