Free domain tools
Quick checks for the things that break websites and email quietly - an expiring certificate, a lapsed domain, a missing DMARC record, a blocklist entry. No sign-up, results in seconds.
01
Domain health check
Is my website reachable, and is anything about to expire?
One pass over the things that take a site down without a single code change: the HTTPS response, the SSL certificate, the domain registration, security blocklists and DNS.
- HTTPS response and speed
- SSL certificate and expiry
- Domain registration expiry
- Security blocklists
- DNS and nameservers
- DNSSEC
Mail health check
Will my email arrive, or land in spam?
Checks the DNS records that decide whether inboxes trust your mail, counts your SPF lookups, and looks your domain up on the spam blocklists.
- MX records
- SPF and its lookup count
- DKIM keys
- DMARC policy
- Spam blocklists
- MTA-STS, TLS-RPT and BIMI