MK.TOOLS — Username Checker
Lock down your handle before someone else does.
Enter a username and we'll check it across 16 platforms at once — Instagram, TikTok, YouTube, X, Facebook, LinkedIn, GitHub, and more.
MK.CTA — Next step
Need a consistent brand across every platform?
Mark 42 helps businesses build a website and social presence that actually looks like one brand — not a patchwork of half-set-up profiles.