Why can't I see the record I just added?

DNS is cached. A resolver keeps the previous answer until the old record's TTL expires, so a change can take minutes to hours to appear. Use the propagation checker to compare several resolvers and see how far the change has spread.

What does the number before an MX host mean?

It is a preference value: lower is tried first. Sending servers attempt the lowest number and fall back to the next on failure. Equal numbers share the load. It is not a server index, and the gaps between numbers carry no meaning.

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DNS Lookup

Query a domain's A, AAAA, MX, TXT, NS, CNAME, SOA, and CAA records.

This lookup is made by our server contacting the host, not by your browser.

About this tool

Enter a domain and choose a record type. A and AAAA are the IPv4 and IPv6 addresses a name points to. MX decides where mail is delivered, and the leading number is a preference value — lower wins. TXT commonly carries SPF, DKIM, and domain verification strings. NS lists the authoritative name servers. CNAME is an alias pointing at another name. SOA carries the zone serial and refresh parameters. CAA restricts which certificate authorities may issue for the domain. Results reflect what the resolver has cached right now, so a record changed moments ago may not appear yet — the propagation checker compares resolvers side by side for that.

How it works

Enter a domain name, for example example.com.
Choose the record type to query.
Review the records returned and copy them if needed.

Limits and notes

The server queries public resolvers on your behalf. Resolvers are fixed to Cloudflare, Google, and Quad9; custom resolvers are not accepted. Only domain names are accepted, not IP addresses or internal host names.

How your input is handled

The domain or URL you enter is sent to our server, where an isolated process contacts the host on your behalf. Nothing you submit is stored or written to an analytics event, no cookies or authorization headers are forwarded, and the target's JavaScript is never executed. The server may only reach publicly routable internet addresses; private ranges, loopback, and cloud metadata addresses are refused.

Frequently asked questions

Why can't I see the record I just added?: DNS is cached. A resolver keeps the previous answer until the old record's TTL expires, so a change can take minutes to hours to appear. Use the propagation checker to compare several resolvers and see how far the change has spread.
What does the number before an MX host mean?: It is a preference value: lower is tried first. Sending servers attempt the lowest number and fall back to the next on failure. Equal numbers share the load. It is not a server index, and the gaps between numbers carry no meaning.

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