Registrant Explorer

The Registrant Explorer tool lets you search by registrant organization name and get back all the domains they own, along with the associated hosts and DNS records.

How to use it?

Enter an organization name in the search bar (e.g. Google LLC, Cloudflare, Inc., Microsoft Corporation) and run the search. You can try a sample query.

The results are split into two views:

• Hosts: the infrastructure (IP addresses, ports, services) behind the registrant's domains.
• DNS: the DNS records (A, CNAME, NS, MX, etc.) for those domains.

What can I use it for?

This is corporate reconnaissance: given an organization name, it cross-searches the WHOIS database for their domains, then pulls the infrastructure behind them. In one search you map the domains a target owns, the IPs, nameservers and services tied to them, and sometimes the forgotten or shadow-IT assets.

Export

Results can be downloaded as JSON or CSV.

How many credits does it cost?

This tool performs multiple cross-database queries and spends 1 credit per step. See the Credits page for details. A Premium subscription is required.