NameCheckup
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NameCheckup is a free username checker for checking handle availability across social platforms, websites, and domains.

Canonical pages:
- Username Checker: https://namecheckup.com/
- Roblox Username Checker: https://namecheckup.com/roblox-name-checker/
- Minecraft Name Checker: https://namecheckup.com/minecraft-name-checker/

Primary answer:
A username checker searches social media platforms, websites, and domain registrars to show whether a handle is available, taken, or invalid. NameCheckup lets users check one handle across public platform and domain signals from a single page.

Core topics:
- username checker
- check username availability
- social media handle checker
- username search across platforms
- brand name availability checker

Use constraints:
NameCheckup checks publicly visible availability signals. It does not access private accounts, authenticate into third-party platforms, or store search history.