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DNS Lookup

See how to check DNS records by looking up A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA answers for a domain.

Guide

Interactive workspace

No account required
Query DNS records

Enter a domain to inspect A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records.

Enter a domain above to begin a live DNS lookup.
Compare resolvers across the internet

Check whether Cloudflare, Google, and Quad9 agree on the current records to spot propagation delays.

How to use it

  1. Enter a domain name without a path or protocol.
  2. Choose the record types to query and run the lookup.
  3. Compare returned values with your DNS provider's expected records.
  4. Check TTL and resolver differences before making another change.
What is DNS Lookup?

Inspect A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records for a domain.

How it works

SiteIndex queries public DNS resolvers for A, AAAA, MX, CNAME, TXT, NS, SOA, and CAA records. The Advanced panel compares Cloudflare, Google, and Quad9 side by side so you can spot propagation differences after a DNS change.

Common uses
  • Verify DNS records after changing hosting, email, or a domain configuration.
  • Check whether a DNS change has propagated across major public resolvers.
  • Confirm MX and TXT records for email deliverability (SPF/DKIM/DMARC context).
Limitations
  • Results depend on the browser, network, input, and external service involved.
  • This tool is informational and does not replace specialist diagnostics or professional advice.
Frequently asked questions
Why do resolvers show different results?
DNS changes take time to propagate. Different resolvers may cache older records until their TTL expires, which is exactly what the resolver comparison panel is built to reveal.
What is a TTL?
Time-to-live (TTL) is the number of seconds a resolver is allowed to cache a record before checking again for updates.
How do I check DNS records for a domain?
Enter the domain without a protocol or page path, select the record types you need, and compare the answers with the values from your DNS provider.
Which DNS record should I check for email?
Start with MX records for mail routing. TXT records commonly hold SPF, DKIM, DMARC, or domain-verification values; confirm the exact record with your mail provider.
Does a DNS lookup prove that my website is online?
No. DNS answers show how a name resolves. Use Website Down Checker or HTTP Status to test whether the web server responds.

Learn more

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