Typosquatting Domain Checker

When to use

Use this before clicking login links, approving vendors, or onboarding new domains in campaigns.

Example checks

• Compare suspicious domain against known brand format.
• Review partner links with unusual character patterns.
• Scan fake support or billing URLs from email.

Trust signals checked

• Character substitution patterns (0/O, rn/m, l/1).
• Brand-like lexical similarity in domain labels.
• Suspicious separator and suffix structure.

Common errors and flags

• Lookalike domain differs by one visually similar symbol.
• Brand word moved to deceptive subdomain position.
• IDN-like spelling used to imitate known company names.

FAQ

Is every similar domain malicious?

No. Similarity is a risk indicator, not proof. Validate ownership and business context before trusting.

Can this detect homograph-style tricks?

It highlights suspicious patterns and naming structure but should be combined with manual review for final decisions.

What should teams do with flagged domains?

Quarantine the link, avoid credential entry, and escalate for security or fraud review.