DNS / MX / SSL Checker
Look up DNS records, mail server (MX) entries, nameservers, TXT records and SSL certificate details for any domain.
What DNS Records Mean and Why They Matter
Every domain relies on DNS to function. DNS records tell the internet where your server is (A record), where to deliver email (MX record), which services can send on your behalf (TXT/SPF), and how to verify your identity (DKIM). Misconfigured DNS is one of the most common causes of email delivery failures, website downtime, and security vulnerabilities.
For website owners and IT professionals, checking DNS regularly is basic domain hygiene. Verify your A record points to the right server, your MX records route to your email provider, and your TXT records include current SPF and DKIM entries to prevent email landing in spam.
SSL certificates are equally important — an expired certificate triggers browser security warnings, destroys visitor trust, and harms search rankings. Check your expiry date regularly so you are never caught off guard.
Frequently Asked Questions
15 minutes to 48 hours depending on TTL. During this window, some users see old records and others see new ones.
Mail Exchange records tell the internet which servers handle email for your domain. Without correct MX records, email will not be delivered.
A TXT record that lists which servers are authorized to send email from your domain. Missing or incorrect SPF causes legitimate email to land in spam.