With one API call, instantly get a list of all subdomains related to a given domain name to reveal a company’s entire web infrastructure. Use it to identify and fortify potential vulnerabilities.Get started
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Our subdomains lookup intelligence reveals every subdomain a domain name has, including when these were last modified.
Our Subdomains Lookup API works for nearly all top-level domains (TLDs).
Use Subdomains Lookup API in addition to Domain Research Suite to correlate WHOIS records with subdomain intelligence when doing in-depth investigations and research.
Know all your network’s weakest points to fortify your cyber defense. Identifying all your subdomains and making sure these are sufficiently protected at all times is essential to optimize your cybersecurity posture.
Finding subdomains is an important step in the information gathering phase of a penetration test. Ensure that none of your unused or forgotten subdomains are left dangling, making them easy targets for attackers to gain unauthorized entry into your network.
Only by examining even the subdomains of suspicious sites can you truly stay protected from all kinds of possible harm. Include every malicious subdomain (even those not identified as indicators of compromise [IoCs]) in your blacklists for greater security.
Digging as deep as possible into your web infrastructure lets you evaluate all connected systems for vulnerabilities. Make a quick self-assessment to uncover all potential weak points, outdated software, or misconfigurations.
Research your competitors' web infrastructure. Get that extra edge by keeping your finger on the pulse. Screen your competitors' subdomain registrations and identify possible business development opportunities.
Build your own products and enrich them with our high-value data. Every API response is returned in JSON and XML formats, which is compatible with popular coding languages.
Find all domains that use the same name server.Learn more
Discover subdomains related to the target domain name.Learn more
Find relations like ownership between hostnames and IPs.Learn more
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Get a complete daily list of all the registered domains and zone files.Learn more
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Monitor exact matches, variations and common misspellings of your brand name & trademarks.Learn more
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Instantly get a screenshot of any web page.Learn more
Find out which domains were added or dropped by registrants, with given search criteria.Learn more
Find out which IP range the particular IP belongs to.Learn more
Define website category of the given domain.Learn more
Find out the exact physical location of any IP address, email or domain name.Learn more
Reveal all the domains that use the same mail server.Learn more
Get insights for the new business registered on the web.Learn more
Find connections between various domains, individuals and organizations.Learn more
Get access to the biggest US Internet Retailers Database.Learn more
Ensure the validity and quality of any email address.Learn more
Get full contacts data of the given domain.Learn more
Identify who is hosting a particular domain name or website.Learn more
We provide complete and relevant domain WHOIS data which can be customized and easily integrated as per your business needs.Learn more
Get well-parsed and normalized WHOIS information for any domain name, IP address or email.Learn more
Keep track of the best business opportunities online.Learn more
Easily detect all typosquatting domain names as soon as they are registered each day.Learn more
Assess the domain's or IP addresses reputation and risk profile with a simple score based on a comprehensive...Learn more
The most accurate domain availability checker offered on the market.Learn more
Get the benefits of accessing up-to-date subdomain data along with all other sources of domain and IP intelligence. Subscribe to an annual plan that fits your business requirements now.Learn more