DNS lookup: see where a domain points and who handles its mail.
Enter a domain to see its address, alias, mail, name server and text records, with a quick check of SPF and DMARC.
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What the records mean.
DNS is the phone book that turns a name into the addresses and services behind it.
An A record gives the IPv4 address of a name, and an AAAA record the IPv6 address. A CNAME makes a name an alias of another. MX records say which servers receive the domain's email, NS records which servers answer for the domain, and TXT records carry free text used for things like SPF and domain verification.
This is the first place to look when a site doesn't load, when email is going missing, or when you've pointed a custom domain at a service and want to confirm the change took effect.
Record types
What each type is for.
| Type | Purpose | Example value |
|---|---|---|
| A | IPv4 address of the name | 93.184.216.34 |
| AAAA | IPv6 address of the name | 2606:2800:220:1:: |
| CNAME | Alias to another name | links.service.example |
| MX | Mail servers, with a priority | 10 mail.example.com |
| NS | Authoritative name servers | ns1.example.com |
| TXT | Text: SPF, DMARC, verification | v=spf1 include:_spf.example.com ~all |
Common questions
Why don't I see my new record yet? +
Resolvers cache answers for the record's TTL, so a change can take minutes or hours to be seen everywhere. Lowering the TTL before a change shortens the wait.
What are SPF and DMARC? +
SPF lists the servers allowed to send mail for the domain. DMARC tells receivers what to do with mail that fails SPF or DKIM, and where to send reports.
Why is there a CNAME and no A record? +
A name that is a CNAME takes its addresses from the name it points to. That is how a custom short-link domain is connected to a service.
Does this show every record type? +
It shows the ones used most often: address, alias, mail, name server and text records, plus the DMARC record.