Domainiq

DomainIQ is a domain intelligence and WHOIS research platform that provides comprehensive historical and current registration data, domain portfolio analysis, reverse WHOIS lookups, and domain-to-IP mapping. It helps investigators identify all domains registered by the same entity, trace domain ownership across registration changes, and map the domain infrastructure of organizations and individuals.

For OSINT investigators, DomainIQ's reverse WHOIS functionality is one of its most valuable features. By searching for a registrant name, email address, phone number, or organization name, investigators can retrieve all domains ever registered by that entity. This capability transforms a single identifying data point into a complete domain portfolio, revealing the full scope of an individual's or organization's domain activity.

Domain portfolio analysis is critical for fraud investigations, brand protection work, and corporate intelligence. A domain registrant operating a fraud scheme typically registers multiple domains as primary sites go offline or are taken down — reverse WHOIS reveals the entire infrastructure rather than just the domain currently being investigated. Similarly, corporate investigations may reveal that an individual controls numerous domains across different business names.

DomainIQ's historical WHOIS data preserves registration records even after privacy protection is applied or registrant information is changed. This historical record is essential because privacy-protecting WHOIS services have made current registration data opaque for many domains — historical records from before privacy protection was applied can contain personally identifying information.

The platform's domain monitoring features alert investigators when specific domains are registered, transferred, or their WHOIS data changes — useful for actively monitoring whether a suspect registers new domains or when a monitored brand is targeted by new phishing domain registrations.

Domain-to-IP mapping and reverse IP lookup identify all domains hosted on the same server, which is valuable for infrastructure mapping — criminal actors frequently host multiple fraudulent sites on the same IP address.

Document all WHOIS data retrieved with the query date, as WHOIS records are updated dynamically and historical states matter for establishing the timeline of domain activity.