Free DNS & Email Security Tools

Instant lookups — no signup, no rate limits. Just enter a domain and get results.

SPF Checker

Look up your SPF record and count DNS lookups. Find out if you're over the 10-lookup limit.

Check DKIM records for common email providers. Verify your outgoing emails are signed.

Analyse your DMARC policy and reporting configuration. See if spoofed emails are being blocked.

Look up MX records with priority ordering. Identify your email provider and check each server resolves.

Full DNS record lookup — A, AAAA, CNAME, MX, NS, TXT and SOA records in one query.

Check SSL certificate details — issuer, expiry date, SANs, protocol version, and hostname match.