Domains & Subdomains Discovery | Domain Research Suite | WhoisXML API

Discover all active domains and subdomains containing your search term

Our Domains & Subdomains Discovery web service lists all domains and subdomains as part of our complete Domain Research Suite (DRS).

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Domains & Subdomains Discovery
What is Domains & Subdomains Discovery?

What is Domains & Subdomains Discovery?

Domains & Subdomains Discovery is a web-based tool that lists all domains and subdomains that contain a specific search term—a brand name, a trademark, or a copyrighted term—in their hostnames.

10.1+ billion Historic WHOIS Records
582+ million Domains tracked
2,864+ TLDs tracking
10+ years of data crawling

Benefits and features

Wide TLD coverage

Domains & Subdomains Discovery works for almost all top-level domains (TLDs), giving users extensive results to map domain footprints.

Real-time results

Find up to 10,000 domains and subdomains per search term within mere seconds with Domains & Subdomains Discovery.

More relevant findings

As part of the Domain Research Suite (DRS), access to Domains & Subdomains Discovery also means access to other domain research and monitoring tools from a single dashboard.

Practical uses

Thwart cybercrime and other cyber attacks


  • Obtain comprehensive lists of suspicious domains and subdomains that could be used in phishing and other malware-enabled campaigns.
  • Bolster protection against spam, malware-laden websites, network intrusion, and other cyber attacks by blocking access to proven malicious domains and subdomains.
  • Include all suspicious domains and subdomains that have yet to be blacklisted to ensure utmost cybersecurity.

Boost marketing research


  • Stay ahead of the curve by looking into new competitor subdomains as clues into their potential business expansion plans.
  • Know the latest industry developments by tracking changes to market leaders’ domain properties, which could be indicative of niche market prospects.

Bolster brand protection


  • Avoid becoming a victim of brandjacking and trademark or copyright infringement by keeping a close watch on typosquatters, phishers, and other brand abusers.
  • Protect your customers, partners, and other stakeholders from fraudsters who are always on the lookout for brands to take advantage of.

Domains & Subdomains Discovery API integration

In the software development business? You can do away with tedious data gathering and benefit from our extensive lists of domains and subdomains by integrating Domains & Subdomains Discovery API into your products.

Learn more about the API Integration

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