Diagnostic tools
Test a domain name for free: name servers, website address, email delivery (MX, SPF, DMARC), SSL certificate and website response.
🌐DNS
Name servers, website address and www subdomain.
✉️Email
MX, SPF and DMARC records, which determine email delivery and deliverability.
🔒SSL and website
HTTPS certificate validity, expiry date and website response.