WhatsMyInfo / FIELD NOTES

Your public IP, without the page

A terminal request to the home page returns your connection IP and one newline.

Plain text

curl -fsS https://whatsmyinfo.org
wget -qO- https://whatsmyinfo.org
Invoke-RestMethod https://whatsmyinfo.org/ip

/ip always returns plain text, regardless of user agent. Use curl -4 or curl -6 if your connection supports that family. It is the source address seen for the request, which may belong to a VPN or NAT gateway.

JSON

curl -fsS https://whatsmyinfo.org/api/ip

The response has ip and version fields. No API key is required. Personalized responses are not cacheable.

Be a considerate caller

There is a 200-request limit per source IP per minute and a separate limit of six live-lookup requests per minute where applicable. Shared NAT users share these limits. When you receive 429, wait for the Retry-After interval. Do not poll in a tight loop. These free endpoints have no uptime commitment.