Check the caller ID, voicemail, or text message for the name or business
Search the phone number in a search engine
Search the number on social media platforms
Use a reverse phone lookup service
Check public directories and online white pages
Look up the number in messaging apps that show profiles
Search the number in contact apps if you already have mutual connections
Ask your phone carrier for available caller information
Report spam or scam numbers through your carrier or a spam-blocking app
Contact local authorities if the number is linked to harassment or threats