WHOIS Lookup API

Our service helps you quickly find accurate WHOIS details about domain names. This information is provided in JSON format, ensuring proper parsing and normalization for seamless integration into your business workflows.

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{
   "domain": {
      "id": "2320948_DOMAIN_COM-VRSN",
      "domain": "facebook.com",
      "punycode": "facebook.com",
      "name": "facebook",
      "extension": "com",
      "whois_server": "whois.registrarsafe.com",
      "status": [
         "clientdeleteprohibited",
         "clienttransferprohibited",
         "clientupdateprohibited",
         "serverdeleteprohibited",
         "servertransferprohibited",
         "serverupdateprohibited"
      ],
      "name_servers": [
         "a.ns.facebook.com",
         "b.ns.facebook.com",
         "c.ns.facebook.com",
         "d.ns.facebook.com"
      ],
      "created_date": "1997-03-29T05:00:00Z",
      "updated_date": "2022-01-26T16:45:06Z",
      "expiration_date": "2031-03-30T04:00:00Z"
   },
   "registrar": {
      "id": "3237",
      "name": "RegistrarSafe, LLC",
      "phone": "+1.6503087004",
      "email": "[email protected]",
      "referral_url": "https://www.registrarsafe.com"
   },
   "registrant": {
      "name": "Domain Admin",
      "organization": "Meta Platforms, Inc.",
      "street": "1601 Willow Rd",
      "city": "Menlo Park",
      "province": "CA",
      "postal_code": "94025",
      "country": "US",
      "phone": "+1.6505434800",
      "email": "[email protected]"
   },
   "administrative": {
      "name": "Domain Admin",
      "organization": "Meta Platforms, Inc.",
      "street": "1601 Willow Rd",
      "city": "Menlo Park",
      "province": "CA",
      "postal_code": "94025",
      "country": "US",
      "phone": "+1.6505434800",
      "email": "[email protected]"
   },
   "technical": {
      "name": "Domain Admin",
      "organization": "Meta Platforms, Inc.",
      "street": "1601 Willow Rd",
      "city": "Menlo Park",
      "province": "CA",
      "postal_code": "94025",
      "country": "US",
      "phone": "+1.6505434800",
      "email": "[email protected]"
   }
}

Why Developers choose our service?

Serving over 10 million requests every month, we help our customers build reliable applications.

Flexible use

Our WHOIS API offers the advantage of flexible use, allowing it to be seamlessly integrated into various internal systems using RESTful API.

With its user-friendly design and straightforward implementation process, businesses can quickly incorporate our API into their existing infrastructure.

Accurate and updated database

Our commitment to accuracy involves maintaining a regularly updated database, ensuring the latest domain ownership details are available.

With updates occurring multiple times per week, you can trust us to deliver reliable and current domain data for your needs.

99.9% Uptime SLA

With our robust and redundant infrastructure, we take pride in offering unparalleled reliability to our valued customers.

When you choose our paid plans, you can rest assured knowing that we provide a rock-solid 99.99% uptime SLA (Service Level Agreement).


Where to use whois data

WHOIS data can be helpful for various purposes, such as troubleshooting network issues, verifying domain ownership, combating spam or fraud, and enforcing intellectual property rights or trademark disputes.

1. Law enforcement

Whois data is a crucial tool for law enforcement, providing essential details about website ownership, creation dates, and contact information.

It aids in tracking cybercriminals involved in various illegal activities, linking online crimes, and gathering evidence necessary for legal actions, assisting law enforcement agencies in swiftly identifying and apprehending offenders.

2. Cyber security

Whois data plays a critical role in combating cybercrime by providing essential information about domain registrations, aiding in the identification of malicious actors, tracking fraudulent websites, and establishing connections between cyber incidents.

This data is crucial for cyber security professionals to detect and prevent online threats, enhancing overall online safety for individuals and organizations.

3. Marketing research

Whois data is a valuable asset for marketers, providing ownership details, contact information, and insights into competitors' online presence.

Marketers leverage this data to personalize campaigns, refine target audiences, optimize SEO strategies, and stay competitive in the dynamic digital market.

4. Brand protection

Whois data is crucial for brand protection, providing ownership details, registration dates, and contact information.

Brands utilize this data to swiftly identify and address trademark infringements, counterfeit websites, and brand abuse online, allowing for proactive protection of their reputation and intellectual property.

5. Enforcing intellectual property rights

Whois data aids in enforcing intellectual property rights by providing ownership details and registration information crucial for identifying trademark infringements and copyright violations online.

Rights holders use this data to take prompt legal actions, safeguarding their intellectual property from misuse or infringement, and preserving their brand integrity and market position.

6. Trademark disputes

Whois data is vital in trademark disputes, providing ownership details, registration dates, and contact information to swiftly identify infringements and gather evidence.

This data helps stakeholders validate trademark usage, strengthen their cases, and take legal actions to protect their brand identities effectively.

Pricing

We offer the best prices among all competitors. Choose the plan that's right for your business.

Basic

$50/mo.

Best for solo entrepreneurs and small startups

  • 2,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Regular support
  • Webhooks
  • Bulk WHOIS API
Start free trial

Premium most popular

$125/mo.

Good for small companies who works with a large number of domains

  • 5,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Webhooks (up to 30 domain names)
  • Bulk WHOIS API
  • Priority support
Start free trial

Enterprise

$290/mo.

Best for enterprise level companies and projects

  • 15,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Webhooks (up to 100 domain names)
  • Bulk WHOIS API
  • Priority support
Start free trial

Basic save 20%

$500/yr.

Best for solo entrepreneurs and small startups

  • 2,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Regular support
  • Webhooks
  • Bulk WHOIS API
Start free trial

Premium save 20%

$1,250/yr.

Good for small companies who works with a large number of domains

  • 5,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Webhooks (up to 30 domain names)
  • Bulk WHOIS API
  • Priority support
Start free trial

Enterprise save 20%

$2,900/yr.

Best for enterprise level companies and projects

  • 15,000,000 requests/mo.
  • 7 days trial period
  • Cancel anytime
  • Check over 500 million domain names
  • Webhooks (up to 100 domain names)
  • Bulk WHOIS API
  • Priority support
Start free trial
Custom plan
If you need more requests, contact us

Frequently Asked Questions

How old is the WHOIS record returned?

The age of the data falls within a 0 to 24-hour range. Normally, the data is current, with an age of 0 hours, as we receive very few duplicate domain queries in a day. We store the WHOIS record in cache for a maximum of 24 hours. When you submit a query, we initially verify if the cached WHOIS record is older than 24 hours. If it is, we retrieve the most recent information in real time.

Why do I get inconsistent WHOIS record response?

Sometimes registrant information shows up under WhoisRecord and sometimes it shows up under WhoisRecord→registryData.

For each domain name there are at most 2 WHOIS records, one from registry (eg. Verisign) and one for registrar (eg. GoDaddy). We return the registry WHOIS record under WhoisRecord→registryData and registar WHOIS record under WhoisRecord. For most TLDs other than com/net, only registry WHOIS record exists.

Are there any TLDs that you don't support?

For certain top-level domains (TLDs), the registry or registrar does not make the WHOIS records publicly available. In such cases, we can only offer a basic WHOIS record containing name server details.