Search their full name in major search engines
Check social media platforms and public profiles
Look up public records and government databases
Search phone number and email address directories
Use people search websites with free basic results
Check alumni, workplace, and professional association directories
Search property, voter, court, and business records
Review mutual friends, family, and acquaintances online
Search old usernames, handles, and profile photos
Check local community groups, forums, and neighborhood pages
Use reverse image search on their photos
Search news articles, obituaries, and public announcements
Contact known relatives, friends, or former coworkers
Visit or call last known addresses or workplaces
Ask local libraries, schools, or churches for public contact info
Search public court filings and legal notices
Use postal forwarding or address lookup services where available
Check online marketplaces, classifieds, and gig platforms
Search for their name in domain registrations and websites
Hire a licensed private investigator if legal and necessary