As a penetration tester preparing for a client engagement, you need to acquire the point of contact and registration tenure of a suspicious domain linked to your client's industry. Given the transient nature of domain registrations and the need for the most current data, which methodology would be MOST effective in obtaining the precise, real-time domain registration information?
Running a passive DNS analysis tool to deduce ownership based on DNS record patterns
Retrieving historical domain ownership information via the Internet Archive's Wayback Machine
Performing a direct WHOIS lookup using an updated WHOIS client or service
Conducting a domain footprint using a search engine cache to potentially find recent contact information