SIMPLE · FAST · FREE

Public IP API

Get the public address observed by WANIP. No API key required for basic endpoints.

Plain text

Best for shell scripts, cron jobs and monitoring.

curl -4 -fsS https://wanip.ztech.dev/ip

curl -6 -fsS https://wanip.ztech.dev/ip

JSON response

curl -sS https://wanip.ztech.dev/api/ip

{
  "ip": "203.0.113.10",
  "version": 4
}

The example IP is reserved for documentation. Real responses contain the address observed for the current request. Responses use no-store caching. Basic endpoints may be rate limited to protect service availability.

Endpoints

Endpoint	Response	Purpose
`/ip`	text/plain	Detected client IP
`/api/ip`	JSON	IP and address family
`/api/health`	JSON	Basic service health
`/api/ipv4`	text/plain	Address observed over IPv4
`/api/ipv6`	text/plain	Address observed over IPv6

JavaScript

const ip = await fetch('https://wanip.ztech.dev/api/ip', {
  cache: 'no-store'
}).then(r => r.json());
console.log(ip.ip);

Response headers

Cache-Control: no-store — avoids shared caching of personal IP results.
Content-Type reflects plain text or JSON.
Cross-origin access is available for public endpoints; sensitive tools should not be built on this API.