What is my IP address?

CLI examples

$ curl ip.t3st.uk
216.73.216.146

$ http -b ip.t3st.uk
216.73.216.146

$ wget -qO- ip.t3st.uk
216.73.216.146

$ fetch -qo- https://ip.t3st.uk
216.73.216.146

$ bat -print=b ip.t3st.uk/ip
216.73.216.146

Country lookup

$ http ip.t3st.uk/country
United States

$ http ip.t3st.uk/country-iso
US

City lookup

$ http ip.t3st.uk/city
Panorama City

JSON output

$ http ip.t3st.uk/json
{
  "ip": "216.73.216.146",
  "ip_decimal": 3628718226,
  "country": "United States",
  "country_eu": false,
  "country_iso": "US",
  "city": "Panorama City",
  "latitude": 34.2278,
  "longitude": -118.442,
  "user_agent": {
    "product": "Mozilla",
    "version": "5.0",
    "comment": "AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "raw_value": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
  }
}

Setting the Accept: application/json header also works as expected.

Plain output

Always returns the IP address including a trailing newline, regardless of user agent.

$ http ip.t3st.uk/ip
216.73.216.146

Port testing

$ http ip.t3st.uk/port/8080
{
  "ip": "216.73.216.146",
  "port": 8080,
  "reachable": false
}

Map

FAQ

How do I force IPv4 or IPv6 lookup?

IPv4 or IPv6 still can be forced by passing the appropiate flag to your client, e.g curl -4 or curl -6. If you cannot use command-line flags, such as with a Web Browser, use v4.ip.n3t.uk or v6.ip.n3t.uk as protocol-specific endpoints.

Is automated use of this service permitted?

Yes, as long as the rate limit is respected. The rate limit is in place to ensure a fair service for all, and although not currently enabled, this may be enabled at any time for any reason.

Please limit automated requests to 1 request per minute. No guarantee is made for requests that exceed this limit. They may be rate-limited, with a 429 status code, or dropped entirely.

Can I run my own service?

Yes, the source code and documentation is available on GitHub.