Free SEO ToolsDNS Record Lookup

DNS Record Lookup

Check domain connectivity and email configuration. View all public DNS records instantly.

Check DNS Records

View A, MX, TXT, NS, and CNAME records for any domain to verify configuration or troubleshoot issues.

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DNS is where a surprising number of SEO problems actually live: a site reachable on one hostname and not another, email that never arrives, or a verification record that silently disappeared.

What each record does

A and AAAA records point a hostname at an IP address. CNAME aliases one hostname to another. MX routes email. NS delegates the zone to nameservers. TXT holds verification strings and email authentication — SPF, DKIM and DMARC all live here.

For SEO specifically, confirm that both www and non-www resolve, and that one redirects to the other rather than both serving the same content independently.

Email deliverability and outreach

If you send link-building or sales outreach, SPF, DKIM and DMARC records are not optional — without them a large share of your mail is filtered before anyone sees it. That is usually the real cause of an outreach campaign with a zero reply rate.

Remember that DNS changes propagate on the TTL, so allow for the cache before concluding a change did not work.

Related

Frequently Asked Questions

DNS (Domain Name System) records are instructions that live on authoritative DNS servers. They tell the internet how to handle requests for your domain, such as where to direct website traffic (A records) or email (MX records).

• **A Record:** Maps a domain name to an IP address. • **MX Record:** Specifies mail servers for email delivery. • **CNAME:** Aliases one name to another. • **TXT:** Stores text information, often used for verification (SPF, DKIM). • **NS:** Specifies authoritative nameservers.

DNS changes can take anywhere from a few minutes to 48 hours to propagate worldwide. This tool shows the current public records visible from our server's location.

If you just updated your DNS, it may take time for the changes to propagate. Also, check your TTL (Time To Live) settings; higher TTL values mean updates take longer to reflect. Double-check your configuration for typos.

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