👤 Username Checker

This tool simulates username checking across social media platforms for educational purposes. Real username checking may be subject to rate limits, API restrictions, and platform policies. Always respect platform terms of service and use responsibly for legitimate research purposes.

Social Media Platforms: Twitter/X: • Username format: @username • Length: 1-15 characters • Allowed: letters, numbers, underscores • Case insensitive Instagram: • Username format: @username • Length: 1-30 characters • Allowed: letters, numbers, periods, underscores • Case insensitive Facebook: • Username format: facebook.com/username • Length: 5-50 characters • Allowed: letters, numbers, periods • Case insensitive LinkedIn: • Username format: linkedin.com/in/username • Length: 3-100 characters • Allowed: letters, numbers, hyphens • Case insensitive GitHub: • Username format: github.com/username • Length: 1-39 characters • Allowed: letters, numbers, hyphens • Cannot start/end with hyphen YouTube: • Username format: youtube.com/@username • Length: 3-30 characters • Allowed: letters, numbers, periods, underscores • Case insensitive TikTok: • Username format: @username • Length: 2-24 characters • Allowed: letters, numbers, periods, underscores • Case insensitive Reddit: • Username format: u/username • Length: 3-20 characters • Allowed: letters, numbers, underscores, hyphens • Case sensitive Discord: • Username format: username#discriminator • Length: 2-32 characters • Allowed: letters, numbers, periods, underscores • Case insensitive Common Username Patterns: • firstname.lastname • firstnamelastname • firstname_lastname • firstname + numbers • lastname + numbers • nickname variations • profession + name • hobby + name

Username Research Methods: 1. Direct Platform Search: • Search username on each platform • Check profile availability • Analyze profile information 2. Search Engine Dorking: • site:twitter.com "username" • site:instagram.com "username" • "username" social media 3. Username Variations: • Add/remove numbers • Add/remove underscores • Try different cases • Common substitutions 4. Cross-Platform Analysis: • Same username across platforms • Similar profile pictures • Consistent bio information • Linked accounts 5. Reverse Image Search: • Profile picture analysis • Find other accounts with same image • Identify real person behind username 6. Timeline Analysis: • Account creation dates • Activity patterns • Post frequency Tools and Resources: • Sherlock - Username search tool • WhatsMyName - Web-based checker • Namechk - Domain and social availability • KnowEm - Username search across 500+ sites • Social-Searcher - Real-time social search Legal and Ethical Considerations: • Respect platform terms of service • Don't harass or stalk users • Use for legitimate research only • Consider privacy implications • Follow local laws and regulations