DOMAINS - CHECK AVAILABILITY

Domains - Check Availability API Endpoints

Complete documentation for all Domains - Check Availability related endpoints.

POST

Check Domain Availability

Check if one or more domains are available for registration. Supports multiple suffixes in a single request.

Endpoint Details

HTTP Request

POST https://0xhost.com/API/domains/check_availability

Parameters

Parameter	Type	Required	Description
`query`	string	Yes	Domain name to check (without suffix)
`suffixes`	array	Yes	Array of domain suffixes to check (e.g. ["io","com","net"])

Authentication

API Key Required in header

Headers

Header	Value	Required	Description
`x-api-key`	`your_api_key_here`	Yes	Your unique API key for authentication
`Content-Type`	`application/json`	Optional	Recommended for consistent response handling

Response Fields

Field	Type	Description
`success`	boolean	Indicates if the operation was successful
`message`	string	Response message describing the result
`data`	object/array	Contains the response data

Success Response

API Response Example

{
    "success": true,
    "data": [
        {
            "domain": "exampledomain.io",
            "available": true,
            "status": "available",
            "premium": false,
            "message": "Domain is available for registration"
        },
        {
            "domain": "exampledomain.com",
            "available": false,
            "status": "registered",
            "premium": false,
            "message": "Domain is already registered"
        }
    ],
    "meta": {
        "total_checked": 2,
        "available_count": 1,
        "checked_at": "2025-11-24T19:08:32+01:00"
    }
}

Code Examples

Programming Languages

JavaScript (Fetch API)

async function makeRequest() {
  try {
    const response = await fetch('https://0xhost.com/API/domains/check_availability', {
      method: 'POST',
      headers: {
        'x-api-key': 'your_api_key_here',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
          "query": "exampledomain",
          "suffixes": "[\"io\",\"com\",\"net\"]"
      })
    });

    const data = await response.json();
    console.log('Response:', data);
    return data;
  } catch (error) {
    console.error('Error:', error);
  }
}

Python (Requests)

import requests
import json

def make_request(api_key):
    url = 'https://0xhost.com/API/domains/check_availability'
    headers = {
        'x-api-key': api_key,
        'Content-Type': 'application/json'
    }
    data = {
        "query": "exampledomain",
        "suffixes": "[\"io\",\"com\",\"net\"]"
    }

    response = requests.POST(
        url,
        headers=headers,
        json=data
    )

    if response.status_code == 200:
        return response.json()
    else:
        print(f'Error: {response.status_code}')
        return None

PHP (cURL)

function makeRequest($apiKey) {
    $url = 'https://0xhost.com/API/domains/check_availability';
    $data = {
        "query": "exampledomain",
        "suffixes": "[\"io\",\"com\",\"net\"]"
    };

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'x-api-key: ' . $apiKey,
        'Content-Type: application/json'
    ]);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));

    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    return json_decode($response, true);
}

cURL Command

curl -X POST \
  'https://0xhost.com/API/domains/check_availability' \
  -H 'x-api-key: your_api_key_here' \
  -H 'Content-Type: application/json' \
  -d '{    "query": "exampledomain",    "suffixes": "[\"io\",\"com\",\"net\"]"}'

0xHost API