Scan any domain's deliverability posture

SPF, DKIM, DMARC, and blacklist status, checked live. Read-only. This cannot modify a DNS record. No account required.

Check a domain now

Read-only DNS lookup. No signup, no changes made, results in seconds.

What this scan actually does

  • • Looks up the domain's SPF, DKIM (common selectors), DMARC, and MX records over DNS-over-HTTPS.
  • • Cross-references the resolved sending IP against 5 public blacklists.
  • • Never writes to DNS, never requires a login, never requires connecting an account.
  • • Is rate-limited per network per day to keep the service available for everyone.