216.73.216.133

// Node.js 18 or later, saved as example.mjs
const res = await fetch('https://ip-fd.net/api/v1/ip/216.73.216.133', {
  headers: { 'X-API-Key': 'YOUR_KEY' },
});
const data = await res.json();
console.log(data);

import requests

r = requests.get(
    "https://ip-fd.net/api/v1/ip/216.73.216.133",
    headers={"X-API-Key": "YOUR_KEY"},
    timeout=10,
)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init("https://ip-fd.net/api/v1/ip/216.73.216.133");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['X-API-Key: YOUR_KEY'],
]);
$response = curl_exec($ch);
curl_close($ch);
print_r(json_decode($response, true));

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://ip-fd.net/api/v1/ip/216.73.216.133", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_KEY")
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()
	data, _ := io.ReadAll(res.Body)
	fmt.Println(string(data))
}