Free Domain Blacklist Checker

Check whether your domain is listed on the Spamhaus Domain Block List — the primary domain-level blocklist — plus SPF, DKIM, and DMARC status.

Your domain — the website address, not an email address (gmail.com, outlook.com, etc. are already set up correctly)

We only read public DNS — never your inbox. Nothing is stored unless you explicitly ask us to email you a copy.

TipSending marketing or transactional email from a subdomain, like mail.yourdomain.com or news.yourdomain.com? Check that separately — it needs its own SPF, DKIM, and DMARC, and a clean result above doesn't cover it.

Want to know why we check Spamhaus specifically? See the FAQ.