Free Security Check

See what an attacker sees first

A high-level, read-only check of your own domain: TLS and certificate, HTTP security headers, services answering from the public internet, and whether someone can send email as you. Verified by a code sent to your domain, so nobody can scan a business they do not run.

  • Your domain only
  • Read-only
  • Nothing published

We only scan domains you can receive mail for. The check reads your headers, certificate and public DNS, and opens a connection to a short list of well-known ports. It sends no payloads and changes nothing.

Free Security Check - Scan Your Domain | IKZERO