What DNS records do
DNS turns a name like example.com into the servers that run its website and email. A and AAAA records point to the web server, MX records say where email goes, NS records name the servers that hold the zone, and TXT records carry settings such as SPF and site verification.
Checking propagation
After you change a record, different resolvers see the new value at different times, depending on the old record’s TTL. This tool asks four large public resolvers the same question so you can see whether they agree yet.
Frequently asked questions
How long does DNS propagation take?
Usually minutes to a few hours. It can take up to the old record’s TTL, which is sometimes 24 hours.
Why do some record types show nothing?
A domain only has the records someone created. A missing CNAME or AAAA record is normal.
Can I look up a subdomain?
Yes. Enter a name such as shop.example.com to see its records.
Read-only: we request public pages the way a visitor would. Private and internal addresses are blocked, and nothing you enter is stored.
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