Omniloop

DNS lookup

Look up A, AAAA, CNAME, MX, TXT, and NS records for any domain, queried live from a public DNS resolver.

What DNS records tell you

DNS translates a domain name into the information computers actually need to connect to it. An A record points to an IPv4 address and an AAAA record to an IPv6 address; a CNAME record aliases one domain to another; NS records list which nameservers are authoritative for the domain. This tool queries a public resolver directly, so you see the records as they’re currently published, not a cached copy from your own device.

MX and TXT records

MX records show which mail servers are configured to receive email for a domain, which is the first thing to check when email isn't arriving. TXT records hold arbitrary text data, most commonly domain-ownership verification codes and email-authentication policies like SPF and DKIM, both of which affect whether your outgoing mail lands in an inbox or a spam folder.

Now test your speed

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DNS lookup FAQ

Common questions about DNS records and how to read them.

What is a DNS lookup?

DNS translates human-readable domain names into the numeric IP addresses computers use to connect, along with other records like mail server routing (MX) and domain verification text (TXT). A DNS lookup queries those records directly so you can see exactly what a domain publishes.

What's the difference between A and AAAA records?

An A record points a domain to an IPv4 address; an AAAA record points it to an IPv6 address. A domain can publish either, both, or neither, depending on which protocols its hosting supports.

Why would I look up MX or TXT records?

MX records show which mail servers handle email for a domain, useful for verifying email setup. TXT records commonly hold domain-ownership verification codes and email-authentication policies (like SPF or DKIM), which is why they're worth checking when troubleshooting deliverability.

Why do DNS lookup results sometimes differ from what I expect?

DNS changes propagate gradually as caches expire across different resolvers worldwide, so a recently-updated domain can show old records in some places and new ones in others for a while. This tool queries a public resolver directly rather than your own device's cache, which is usually the more current view.

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