Questions about WHOIS History Use | WHOIS History API | WhoisXML API


What details do WHOIS history solutions give?

All WHOIS history lookup results cover key data points, including:

  • Creation, update, and expiration dates
  • Registrar name
  • Nameservers
  • Domain status
  • Registrant name and contact information
  • Administrative contact name and details
  • Technical contact name and details
  • etc...

How far back do WHOIS history solutions go?

Our WHOIS history solutions provide more than 12 years’ worth of data, made possible by extensive data crawling. In fact, we have WHOIS records that date as far back as 2010.

Is there a limit to the number of requests I can make via Whois History API?

You can send up to 30 requests per second. When you reach this limit, your succeeding requests won’t be processed until the next second.

How much does access to WHOIS history solutions cost?

We offer a one-time purchase package as well as monthly and yearly subscription plans. You can also customize your plan according to your business needs. Check out our pricing page for more information.

What payment options are available?

You can subscribe to any of our WHOIS history solutions using any major credit card or PayPal. If you want to pay using Bitcoin, wire transfer, check, or other payment methods, drop us an email at or fill up the contact form at the bottom of our pricing page.

Do you offer a free trial?

Yes. You just have to sign up for a free subscription plan to avail of 500 free credits. You can get started here.

What sets your WHOIS history solutions apart from those offered by other providers?

Our WHOIS history database is one of if not the largest repository of historical WHOIS ownership data. To date, we have more than 16.7 billion WHOIS records spanning 7,596 top-level domains (TLDs). We partner with various registrars to ensure the accuracy and relevance of our data. These partnerships enable us to track more than 774 million domain names to date.

How can enterprises access your WHOIS history data?

Our WHOIS history data can be accessed through various Enterprise API or Enterprise Data Feed packages.

I used up my API call limit, what should I do?

Every API call costs 50 Domain Research Suite (DRS) credits, and each subscription plan has different available DRS credits per month. You can check our various subscription plans and their corresponding limits to see which suits your usage requirements. Your credits are replenished at the beginning of each month.

Why am I seeing a CAPTCHA request when using the API demo?

CAPTCHA requests allow us to ensure that our WHOIS history lookup solutions are not abused by automated web scraping services. Aside from violating our terms of service, using automated scrapers negatively impact other users. As such, we may ask you to take a CAPTCHA test once in a while to ensure that a real human being is making a request.

Who are the users of WHOIS History?

Many professionals find WHOIS history data relevant, including:

  • Cybersecurity specialists who want to look into past or hidden domain connections as part of their product development tasks, research and monitoring strategies, and third-party risk assessment activities.
  • Law enforcement investigators looking for clues in historical WHOIS records to establish connections to known cybercriminals, accomplices, and other people of interest.
  • Brand protection agents who need to learn more about the identity of potential trademark infringers that might now be redacted.

Can you use WHOIS history solutions with other products for more thorough results?

Yes. You can combine WHOIS history with reverse WHOIS lookups using the Domain Research Suite (DRS) to identify all other domains that have historically shared the domain in question’s registrant, organization, or contact details (e.g., email address, phone number, etc.).

What are the benefits of looking into WHOIS history?

Our product page shows more information on the advantages of looking into historical domain records.

What channels do you offer for customer support?

Check out our specifications page for technical information about using WHOIS History API. For answers to additional questions, you may reach out to any of our team members by dropping us an email at:

  • for technical and account support
  • for product customization and feature requests
  • for pricing and partnership inquiries

Various support tiers, including Premium Support which gives you access to our call center support team members, are also available.