A free tool from Shifter

Free IP geolocation
and ASN API.

Country, city, ISP and ASN data for your apps,
scripts and AI agents. No signup. No API key.

Free, on us. Built for developers, teams and AI agents.

LIVE LOOKUP

Get to know an IP.

IPv4 + IPv6
IP Info is maintained and supported by

IP intelligence

Everything you need.
Nothing to subscribe to.

Useful location and network data.
A single request. A straightforward response.

LOCATION DATA
USUnited StatesCalifornia · Mountain View
37.4220° N122.0850° W

Know where an IP belongs.

Country, region, city and approximate coordinates. Check proxy locations against the data source used by Shifter.

NETWORK DATA
ASNAS15169
ConnectionCorporate
AnycastTrue

Look beyond the location.

ASN, ISP, organization and connection type. Separate, predictable fields that fit straight into your application.

PUBLIC ACCESS
GET /json 200 OK
✓ No signup✓ No API key✓ Free to use

Make a request. That’s it.

HTTP or HTTPS. IPv4 or IPv6. Free access for your application, your scripts and your AI agents.

Developer friendly

Integrate in seconds.

Check your network exit or pass a specific IP.
Use the language you already work in.

Your data. Any stack.

Use /json for full IP data or /json_lite for only country code, region, city and timezone. No SDK, signup or API key needed.

  • Full or lite JSON, two lookup modes
  • Consistent JSON, explicit null values
  • Public CORS for browser applications
Read the documentation
curl --fail --max-time 10 "https://ip-info.com/json"

Ready for agents

Your agent already
knows how to use this.

Ordinary HTTP. Structured JSON. No authentication flow.
Give your agent the docs and let it get to work.

The team behind IP Info

Check an IP here.
Build more with Shifter.

From proxy infrastructure to ready-to-use data APIs, Shifter helps you collect the web. IP Info gives you a free way to check the IPs behind your workflow.

PROXY INFRASTRUCTURE

Residential Proxies

From precise local targeting to a worldwide mix. Choose the residential pool that fits your workflow.

Full GeoCountry, state, city & ASN targeting
Country GeoCountry-level targeting
Non-GeoA worldwide mix, without location targeting
Explore Residential Proxies ↗
PRECISE NETWORK SELECTION

ISP Proxies

Choose static residential IPs by country, city and ISP (ASN). Build workflows around the locations and networks that matter to you.

CountryCityISP / ASN
Explore ISP Proxies ↗
WEB DATA

Web Scraping API

Turn web pages into useful data. Proxy management and JavaScript rendering are handled for you.

Explore Web Scraping API ↗
SEARCH INTELLIGENCE

SERP API

Structured search results for rank tracking, SEO research and search analysis. Ready for your application.

Explore SERP API ↗

A practical check for your proxy workflow.

IP Info uses the same IP intelligence data source as Shifter. Send a request to /json through your proxy to inspect its exit, or pass an IP to check its country, city, ISP and ASN. It’s a simple way to validate your setup using familiar data.

See the Shifter proxy example →
  1. 01
    Choose your target

    Select the location or network in your Shifter proxy configuration.

  2. 02
    Check the exit

    Request IP Info through the proxy and read the returned IP data.

  3. 03
    Compare and build

    Compare the reported country and ASN with your intended target.

IP Info is free to use, whether or not you’re a Shifter customer. Shifter’s proxy and data API products have their own plans.

Frequently asked questions

A few things
worth knowing.

Still have a question?
Talk to the Shifter team ↗

Is IP Info really free?

Yes. IP Info is free to use, with no signup, API key or subscription. Shifter maintains and supports the service. There is no application quota; service capacity and acceptable-use terms still apply.

What can I look up?

Public IPv4 and IPv6 addresses. Results include location, country, city, ISP, ASN, organization and network classifications where the database has them. Missing attributes are returned as null.

Can I get just the location fields?

Yes. Use /json_lite for compact JSON containing only country_code, region, city and timezone. Add ?ip=ADDRESS to look up a supplied public IPv4 or IPv6 address. All four keys are always present, with null for unavailable values.

How do I check my proxy location?

Make a request to /json through your proxy. It returns the IP seen by our service, which should be the proxy exit. You can also supply a known exit IP with /json?ip=ADDRESS. See the proxy example in the documentation.

Can I use HTTP as well as HTTPS?

Yes. Both protocols support the same API routes, with no forced HTTP redirect. HTTPS protects the connection. HTTP avoids a TLS handshake, but is not necessarily faster on reused connections.

How accurate and fresh is the data?

Geolocation is approximate, not a street address or a person’s live location. Data may be incomplete or outdated.

Can AI agents use the API?

Yes. No authentication flow is needed. An agent can read our OpenAPI schema and llms.txt. A call to /json identifies the agent’s network exit; to check a human user’s IP, the agent must supply that IP explicitly.

Is this the same database Shifter uses?

This service uses the same IP location and network data source as Shifter. Independently running systems may return different results.

Does the API detect VPNs or proxies?

No. ASN, ISP, connection type and anycast are database attributes. They should not be treated as proof that an IP is a VPN, proxy or residential connection.

One less subscription.
One more thing you can build.

Premium IP intelligence. Zero subscription cost.