Whois API

REST API for domain WHOIS lookups. Returns registrar info, registration dates, nameservers, and DNSSEC status in structured JSON.

Features

• Single endpoint for all domain lookups
• Returns structured JSON (no raw WHOIS parsing needed)
• Supports 1,000+ TLDs including .com, .net, .org, .io, .co, .ai
• Real-time data from official WHOIS servers
• 850ms average response time
• 5,000 requests/month on free tier
• Example Response:

{
  "domain": "github.com",
  "registration": {
    "registrar": "markmonitor, inc.",
    "whois_server": "whois.markmonitor.com",
    "created_at": "2007-10-09T18:20:50Z",
    "updated_at": "2024-09-07T09:16:33Z",
    "expires_at": "2026-10-09T18:20:50Z"
  },
  "dns": {
    "name_servers": [
      "ns-1283.awsdns-32.org",
      "ns-1707.awsdns-21.co.uk",
      "dns1.p08.nsone.net",
      "dns2.p08.nsone.net"
    ],
    "dnssec_status": "unsigned",
    "dnssec_enabled": false
  }
}

Authentication

• Create account at omkar.cloud
• Get API key from omkar.cloud/api-key
• Include API-Key header in requests

Note: 5,000 requests/month free.

Quick Start

curl -X GET "https://whois-api.omkar.cloud/whois?domain=github.com" \
  -H "API-Key: YOUR_API_KEY"

{
  "domain": "github.com",
  "registration": {
    "registrar": "markmonitor, inc.",
    "whois_server": "whois.markmonitor.com",
    "created_at": "2007-10-09T18:20:50Z",
    "updated_at": "2024-09-07T09:16:33Z",
    "expires_at": "2026-10-09T18:20:50Z"
  },
  "dns": {
    "name_servers": ["ns-1283.awsdns-32.org", "ns-1707.awsdns-21.co.uk"],
    "dnssec_status": "unsigned",
    "dnssec_enabled": false
  }
}

Installation

Python

pip install requests

import requests

response = requests.get(
    "https://whois-api.omkar.cloud/whois",
    params={"domain": "github.com"},
    headers={"API-Key": "YOUR_API_KEY"}
)

whois_data = response.json()

Node.js

npm install axios

import axios from "axios";

const response = await axios.get("https://whois-api.omkar.cloud/whois", {
  params: { domain: "github.com" },
  headers: { "API-Key": "YOUR_API_KEY" }
});

const whoisData = response.data;

API Reference

Endpoint

GET https://whois-api.omkar.cloud/whois

Headers

Header	Required	Description
API-Key	Yes	API key from omkar.cloud/api-key

Parameters

Parameter	Required	Description
domain	Yes	Domain name to lookup

Response

{
  "domain": "string",
  "registration": {
    "registrar": "string",
    "whois_server": "string",
    "created_at": "ISO 8601 datetime",
    "updated_at": "ISO 8601 datetime",
    "expires_at": "ISO 8601 datetime"
  },
  "dns": {
    "name_servers": ["string"],
    "dnssec_status": "string",
    "dnssec_enabled": "boolean"
  }
}

Field	Type	Description
domain	string	Domain name
registration.registrar	string	Domain registrar
registration.whois_server	string	WHOIS server used
registration.created_at	string	Domain registration date
registration.updated_at	string	Last modification date
registration.expires_at	string	Domain expiration date
dns.name_servers	array	List of nameservers
dns.dnssec_status	string	DNSSEC status (signed/unsigned)
dns.dnssec_enabled	boolean	Whether DNSSEC is enabled

Examples

Check domain expiration

response = requests.get(
    "https://whois-api.omkar.cloud/whois",
    params={"domain": "example.com"},
    headers={"API-Key": "YOUR_API_KEY"}
)

data = response.json()
print(f"Expires: {data['registration']['expires_at']}")

Get registrar info

response = requests.get(
    "https://whois-api.omkar.cloud/whois",
    params={"domain": "stripe.com"},
    headers={"API-Key": "YOUR_API_KEY"}
)

data = response.json()
print(f"Registrar: {data['registration']['registrar']}")

Monitor multiple domains

const domains = ["github.com", "stripe.com", "vercel.com"];

const results = await Promise.all(
  domains.map(domain =>
    axios.get("https://whois-api.omkar.cloud/whois", {
      params: { domain },
      headers: { "API-Key": "YOUR_API_KEY" }
    })
  )
);

results.forEach(r => {
  const { domain, registration } = r.data;
  console.log(`${domain} expires: ${registration.expires_at}`);
});

Error Handling

response = requests.get(
    "https://whois-api.omkar.cloud/whois",
    params={"domain": "invalid"},
    headers={"API-Key": "YOUR_API_KEY"}
)

if response.status_code == 200:
    data = response.json()
elif response.status_code == 401:
    # Invalid API key
    pass
elif response.status_code == 429:
    # Rate limit exceeded
    pass

Rate Limits

Plan	Price	Requests/Month
Free	$0	5,000
Starter	$25	100,000
Grow	$75	1,000,000
Scale	$150	10,000,000

Support

• Email: happy.to.help@omkar.cloud
• WhatsApp: Chat with us

Love It? Star It ⭐!

If this tool has been helpful, please give us a star ⭐ on GitHub.