Official client Libraries

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IPinfo Developer Resource

The quickest and easiest way to get started with IPinfo is to use one of our official libraries, which are available for many popular programming languages and frameworks. If you'd like to write your own library or interact directly with our API, then the documentation below can help you.

Authentication

Your API token is used to authenticate you with our API and can be provided either as an HTTP Basic Auth username, a bearer token, or alternatively as a token URL parameter.

# With Basic Auth
$ curl -u $TOKEN: ipinfo.io

# With Bearer token
$ curl -H "Authorization: Bearer $TOKEN" ipinfo.io

# With token query parameter
$ curl ipinfo.io?token=$TOKEN

It's also possible to use the API without authentication in a more limited capacity.

JSON Response

We try to automatically detect when someone wants to call our API versus view our website, and then we send back the appropriate JSON response rather than HTML. We do this based on the user agent for known popular programming languages, tools, and frameworks. However, there are a couple of other ways to force a JSON response when it doesn't happen automatically.

One is to append /json at the end of any request:

$ curl ipinfo.io/json
$ curl ipinfo.io/8.8.8.8/json

The other is to set the Accept header to application/json:

$ curl -H "Accept: application/json" ipinfo.io
$ curl -H "Accept: application/json" ipinfo.io/8.8.8.8

IP Address Parameter

The API supports passing in a single IPv4 or IPv6 IP address. Alternatively, if you do not pass in any IP address, we'll return details for the calling address. This allows you to look up your own (or a visitor to your site) IP address details without knowing the IP address in advance.

# Get details for 8.8.8.8
$ curl ipinfo.io/8.8.8.8?token=$TOKEN

# Get details for 2001:4860:4860::8888
$ curl ipinfo.io/2001:4860:4860::8888?token=$TOKEN

# Get details for your own IP address, which'll be included in the response
$ curl ipinfo.io?token=$TOKEN

HTTPS/ SSL

Our API is available over a secure HTTPS connection for all users. Simply add https:// to the request URLs to make the requests secure.

# Get details for your own IP address over HTTPS
$ curl https://ipinfo.io?token=$TOKEN

Rate Limits

Free usage of our API is limited to 50,000 API requests per month. If you exceed that limit, we'll return a 429 HTTP status code to you.

Paid plans come with higher monthly limits, and configurable alerts.

Filtering Responses

You can filter the API response down to specific fields or objects by adding the field or object name to the URL. In the case of a field you'll get it returned in plaintext, and an object will get returned as JSON.

# Get json the org field as plaintext
$ curl ipinfo.io/8.8.8.8/org?token=$TOKEN
AS15169 Google Inc.

# Get just the city as plaintext
$ curl ipinfo.io/8.8.8.8/city?token=$TOKEN
Mountain View

# Get country ISO code as plaintext
$ curl ipinfo.io/8.8.8.8/country?token=$TOKEN
US

JSONP/ CORS Requests

JSONP and CORS are supported, allowing you to use ipinfo.io entirely in client-side code. For JSONP you just need to specify the callback parameter, e.g. http://ipinfo.io/?callback=callback&token=$TOKEN.

Request visitor data using Fetch API (Promise)

fetch("https://ipinfo.io/json?token=$TOKEN").then(
  (response) => response.json()
).then(
  (jsonResponse) => console.log(jsonResponse.ip, jsonResponse.country)
)

Request visitor data using Fetch API (Async/Await)

const request = await fetch("https://ipinfo.io/json?token=$TOKEN")
const jsonResponse = await request.json()

console.log(jsonResponse.ip, jsonResponse.country)

Request visitor data using JSONP

<script>
  function recordData (data) {
    console.log(data.ip, data.country)
  }
</script>
<script src="https://ipinfo.io/json?callback=recordData"></script>

IPv6 API endpoint

IPinfo's API ensures seamless support for both IPv4 and IPv6 connection. However, for technical reasons, we use distinct API endpoints:

If you're on an IPv6 address, use the v6.ipinfo.io API endpoint, which functions identically to the standard IPv4 API. All API parameters and arguments are supported as usual.

Example:

curl https://v6.ipinfo.io

Our website, however, is fully dual-stacked, supporting both IPv4 and IPv6 natively through the ipinfo.io domain. Our IP data download product always includes both IPv4 and IPv6 IP addresses in each individual database download. If you are looking up IPv6 addresses as an API parameter or input, you can do so simply as well. Usage of v6.ipinfo.io only applies to IPv6 traffic visiting our API service.

Why Separate API Endpoints?

By separating the API endpoints, we prevent unintended behavior when tools default to IPv6 (via AAAA records). This ensures you receive the expected address type for your query. Because if we have A and AAAA records for the domain (supporting both v4 and v6), the users would get their v6 address back when they go to ipinfo.io's API (internet services usually default to v6 if it’s available), which is not usually what they expect.