What this DNS lookup returns
Enter a domain and the tool queries its A, AAAA, MX, TXT, NS, SOA and SRV records in one go, against Cloudflare's public resolvers. You get every record of each type, so you can see in one place where a domain points, who handles its mail and which servers are authoritative for it.
Because the query goes through a public resolver rather than your own network, the answer is what most of the internet sees, not a value cached by your router or your company DNS.
Reading the records
A and AAAA records are the IPv4 and IPv6 addresses a name points to. MX records list the mail servers, lowest priority number first. TXT records carry verification tokens and email policies such as SPF. NS records name the authoritative name servers, and SOA holds the zone serial and timers.
Resolvers cache each record for its TTL, a duration in seconds set by whoever manages the zone. A TTL of 3600 means a change can take up to an hour to be seen by everyone who already looked the record up.
Frequently asked questions
Why does the DNS lookup show an old value after I changed my record?
Resolvers keep an answer until its TTL expires, so a change only shows up everywhere once the old TTL has run out. Check the record against several resolvers with the DNS propagation checker to see who already has the new value.
What is the difference between an A record and a CNAME?
An A record maps a name directly to an IPv4 address. A CNAME makes a name an alias of another name, which is then resolved in turn. A name with a CNAME cannot carry other records, which is why the bare domain usually uses A records.
Why does my domain have no MX record?
Without an MX record, mail for the domain is delivered to its A record if there is one, and otherwise cannot be delivered. If the domain sends or receives mail, add MX records pointing to your mail provider.
Is this DNS lookup free?
Yes. It needs no account, and anonymous use is only limited by a per-IP rate limit.