Find out all you have to know
about the history of a domain name's
ownership.

5+ billion
Historical WHOIS records
309+ million
Domains tracked
2,864+
TLDs tracked
10+ years
of data crawling
Database Complete history of WHOIS changes Domain name

This API will allow you to view relevant historical WHOIS records – and find out how a domain's ownership was changing. For the past 10+ years, we have been tracking WHOIS histories of hundreds of millions domains. These changes are parsed, processed and safely stored in our database – so as to be accessible by our WHOIS History API.

You can also get a comprehensive ownership history of a given domain name by using our new Domain Research Suite Dashboard.

Fast, intuitive and responsive

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WHOIS History Search

Practical usage

Use WHOIS History API to look up identifying information before privacy records.

Investigate the last public record to uncover how a domain's ownership was changing.

Find out who is committing online fraud or attacking the network. Use WHOIS History API to help identify an attacker.

Enterprise API Package

API access through WhoisXMLAPI can be purchased as an annual subscription. The access pricing is based on the number of queries, which is measured monthly with per-minute rate limits. The pricing structure gives predictability to business planning and solution architecture.

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