In the vast landscape of the internet, understanding the ownership and details of a domain can be crucial. This is where WHOIS comes in. WHOIS is a protocol used to query databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system. It provides valuable information about domain registration and ownership, which is essential for various purposes, including network troubleshooting, verifying domain ownership, and resolving trademark disputes.

What is WHOIS JSON API?

WHOIS JSON APIs provide a simplified way to access WHOIS information in JSON format. By offering WHOIS information in JSON format, developers can easily integrate this data into their applications and services, making it more accessible and usable.

Key Features of WHOIS JSON APIs:

Free and Paid Plans: WHOIS JSON APIs offer both free and paid plans to suit your needs. The free plan allows you to get started without requiring a credit card.

Domain Information at Your Fingertips: With WHOIS JSON APIs, you can quickly retrieve precise domain information, including registration and expiration dates, registrar details, and domain status.

No Credit Card Required: The free plan of WHOIS JSON APIs does not require a credit card, making it easy to get started with querying domain information.

User-Friendly Documentation: WHOIS JSON APIs provide comprehensive documentation to help you integrate the API into your applications with ease.

Bulk WHOIS Lookup: The API supports bulk WHOIS lookup, allowing you to query multiple domains at once, making your research or investigation faster and more efficient.

Why Use WHOIS JSON APIs?

Tackle Online Misbehavior: WHOIS information can help identify the owners of websites involved in online misbehavior, such as spamming or phishing.

Check Domain Availability: Quickly check the availability of a domain name to see if it is already registered.

Access Important Ownership & Date Records: Obtain important details about a domain, such as creation and expiration dates, as well as information about the registrar and nameservers.

Benefit from User Geolocation Services: Use WHOIS information to determine the geographical location of a domain owner.

Research Internet Infrastructure: WHOIS information can be used to research internet infrastructure and usage patterns, providing valuable insights into the internet's structure and evolution.

Sample response:

This sample response provides detailed WHOIS information for the domain "facebook.com." It includes data such as the registrar, registration and expiration dates, domain status, registrant details (name, organization, contact information), administrative and technical contact information, name servers, and more. This structured JSON format makes it easy for developers to extract and use this information in their applications or services.

{
  "facebook.com": {
    "domainName": "FACEBOOK.COM",
    "registryDomainId": "2320948_DOMAIN_COM-VRSN",
    "registrarWhoisServer": "whois.registrarsafe.com",
    "registrarUrl": "https://www.registrarsafe.com",
    "updatedDate": "2024-04-24T19:06:13Z",
    "creationDate": "1997-03-29T05:00:00Z",
    "registrarRegistrationExpirationDate": "2033-03-30T04:00:00Z",
    "registrar": "RegistrarSafe, LLC",
    "registrarIanaId": "3237",
    "registrarAbuseContactEmail": "abusecomplaints@registrarsafe.com",
    "registrarAbuseContactPhone": "+1.6503087004",
    "domainStatus": [
      "clientDeleteProhibited",
      "clientTransferProhibited",
      "clientUpdateProhibited",
      "serverDeleteProhibited",
      "serverTransferProhibited",
      "serverUpdateProhibited"
    ],
    "registrantName": "Domain Admin",
    "registrantOrganization": "Meta Platforms, Inc.",
    "registrantStreet": "1601 Willow Rd",
    "registrantCity": "Menlo Park",
    "registrantStateProvince": "CA",
    "registrantPostalCode": "94025",
    "registrantCountry": "US",
    "registrantPhone": "+1.6505434800",
    "registrantEmail": "domain@fb.com",
    "adminName": "Domain Admin",
    "adminOrganization": "Meta Platforms, Inc.",
    "adminStreet": "1601 Willow Rd",
    "adminCity": "Menlo Park",
    "adminStateProvince": "CA",
    "adminPostalCode": "94025",
    "adminCountry": "US",
    "adminPhone": "+1.6505434800",
    "adminEmail": "domain@fb.com",
    "techName": "Domain Admin",
    "techOrganization": "Meta Platforms, Inc.",
    "techStreet": "1601 Willow Rd",
    "techCity": "Menlo Park",
    "techStateProvince": "CA",
    "techPostalCode": "94025",
    "techCountry": "US",
    "techPhone": "+1.6505434800",
    "techEmail": "domain@fb.com",
    "nameServer": "D.NS.FACEBOOK.COM A.NS.FACEBOOK.COM B.NS.FACEBOOK.COM C.NS.FACEBOOK.COM",
    "dnssec": "unsigned",
    "urlOfTheIcannWhoisDataProblemReportingSystem": "http://wdprs.internic.net/",
    "lastUpdateOfWhoisDatabase": "2024-05-08T22:48:00Z <<<"
  }
}

Conclusion:

In conclusion, WHOIS JSON APIs provide a simple and efficient way to access domain information, making it easier for developers to integrate this data into their applications. Whether you're a developer looking to check domain availability or a researcher studying internet infrastructure, WHOIS JSON APIs offer a valuable resource for accessing and utilizing domain information.