live check
DNS Lookup
Look up DNS records for any domain: A, AAAA, MX, TXT, NS, CNAME, SOA and CAA. Fast, free and no sign-up.
more website & email diagnostics
Email Deliverability Checker
Check SPF, DKIM, DMARC and MX records and get a deliverability score.
SSL Certificate Checker
See issuer, expiry date, covered domains and days left on any SSL certificate.
HTTP & Security Headers
Inspect HTTP headers, redirects and grade your security headers.
SEO Meta Tag Analyzer
Audit title, description, Open Graph, headings and images for any page.