WHOIS API

API Overview

Our WHOIS API allows developers to programmatically query domain registration information and receive structured JSON responses. This is useful for building domain research tools, monitoring systems, SEO applications, or any software that needs to access domain WHOIS data at scale.

The API returns comprehensive domain information including registration dates, expiry dates, registrar details, nameservers, and domain status codes. All data is retrieved from official WHOIS databases in real-time to ensure accuracy and freshness.

API Endpoint

Send a POST request with a JSON body containing the domain name to query:

{
  "domain": "example.com"
}

Response Format

The API returns a JSON object with the following fields:

{
  "domain": "example.com",
  "createdDate": "1995-08-14T00:00:00",
  "updatedDate": "2023-08-14T00:00:00",
  "expiryDate": "2024-08-13T00:00:00",
  "age": {
    "years": 28,
    "months": 4,
    "days": 20
  },
  "daysUntilExpiry": 223,
  "registrar": "RESERVED-Internet Assigned Numbers Authority",
  "nameServers": ["a.iana-servers.net", "b.iana-servers.net"],
  "status": ["clientDeleteProhibited", "clientTransferProhibited"],
  "dnssec": "signedDelegation"
}

Fields include domain age calculated in years, months, and days; ISO 8601 formatted dates; registrar name; an array of nameservers; domain status codes; and DNSSEC status. For invalid domains or lookup errors, the API returns an error message with an appropriate HTTP status code.