API docs

curl -s https://api.nestip.net/v1/ip/1.1.1.1 \
  -H 'X-API-Key: nip_your_key'

const res = await fetch('https://api.nestip.net/v1/ip/1.1.1.1', {
  headers: { 'X-API-Key': 'nip_your_key' },
});
const body = await res.json();

import requests

r = requests.get(
    'https://api.nestip.net/v1/ip/1.1.1.1',
    headers={'X-API-Key': 'nip_your_key'},
    timeout=5,
)
print(r.json())

<?php
$ch = curl_init('https://api.nestip.net/v1/ip/1.1.1.1');
curl_setopt_array($ch, [
    CURLOPT_HTTPHEADER => ['X-API-Key: nip_your_key'],
    CURLOPT_RETURNTRANSFER => true,
]);
echo curl_exec($ch);

req, _ := http.NewRequest(http.MethodGet, "https://api.nestip.net/v1/ip/1.1.1.1", nil)
req.Header.Set("X-API-Key", "nip_your_key")
res, err := http.DefaultClient.Do(req)