Registrant Monitor | Domain Owner Monitoring | Domain Research Suite | WhoisXML API
Products APIs Data feeds Web tools Domain Research & Monitoring Enterprise packages Cyber Threat Intelligence
WHOIS / WHOIS History
WHOIS / WHOIS History

Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.

DNS / DNS History
DNS / DNS History

Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.

IP Geolocation / IP Netblocks
IP Geolocation / IP Netblocks

Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Access our web-based solution to dig into and monitor all domain events of interest.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.

Research
Monitoring
Enterprise API Packages
Enterprise API Packages

Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.

Enterprise Data Feed Packages
Enterprise Data Feed Packages

Downloadable domain, IP, and DNS datasets for efficient and unrestricted access to all of our intelligence sources within your network perimeter.

Enterprise Tools Packages
Enterprise Tools Packages

Access to our domain and threat intelligence tools in combo with package discounts for enterprise and government customers.

Enterprise Security Intelligence Packages
Enterprise Security Intelligence Packages

Packages designed to augment commercial and in-house security platforms, support managed security services, and facilitate investigations.

Threat Intelligence Analysis
Threat Intelligence Analysis

Carry a complete threat intelligence analysis for a given domain or IP address and get access to a report covering 120+ parameters including IP resolutions, website analysis, SSL vulnerabilities, malware detection, domain ownership, mail servers, name servers, and more.

Threat Intelligence APIs
Threat Intelligence APIs

Gather threat intelligence via API calls covering Domain’s Infrastructure analysis, SSL Certificates Chain, SSL Configuration Analysis, Domain Malware Check, Connected Domains, and Domain Reputation Scoring.

Threat Intelligence Data Feeds
Threat Intelligence Data Feeds

Bolster enterprise security with our feeds covering Typosquatting domains, Disposable domains, Phishing URLs, Domain & IP reputation, Malicious URLs, Botnet C&C, and DDoS URLs.

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Registrant Monitor helps you keep track of domain owners

Monitor all newly registered, updated, or deleted domain names registered by specific individuals or companies.

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Registrant Monitor

Registrant Monitor helps you monitor the activity of individual registrants and companies, as shown on their domain WHOIS records. Add domain owners to your list and proactively track related new registrations, renewals, and expirations. This is a great tool to keep a close watch on your competition.

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

Complete domain owner monitoring

Monitoring

Monitor changes regarding any registrant WHOIS field: name, email address, physical address, postal code, phone number, and more.

Tracking

Now you can easily track all new registrations and renewals, as well as domain expirations, occurring specifically for your monitored terms.

Getting alerts

Be alerted via email every time a registrant in your tracker is active in the domain name space.

Practical uses

  • Spot registration trends related to a physical address or a phone number so you can check if a registrant uses more than one name or company.
  • Staying close on the heels of suspicious registrants by keeping tabs on the domains they register or drop is possible with this service.
  • Stay ahead of your competitors by watching out for recent online acquisitions or modifications as they happen.

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Ready for API integration?

Insights from Registrant Monitor are available as well via API calls. No complicated coding is necessary with our developer libraries.

Learn more about the API Integration

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