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DNS Lookup Tool

Network

Check DNS records for any domain including A, MX, CNAME, TXT, and NS records.

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Queries Google DNS-over-HTTPS. NXDOMAIN, empty answers and resolver errors are distinct. Maximum 20 domains, three concurrent requests.

Troubleshooting why a domain's DNS changes haven't propagated after switching providers usually comes down to checking NS records specifically, which nameservers are actually authoritative for a domain right now, a detail that matters during a delegation change in a way A or MX records simply don't address. This tool checks A, MX, CNAME, TXT, and NS records for any domain, built around the record types that matter for diagnosing DNS delegation and infrastructure issues specifically.

See more about the DNS Lookup Tool

Useful for confirming which nameservers are actually authoritative for a domain after a provider switch, checking whether an NS record change has actually propagated yet, or looking up a domain's core infrastructure records during a DNS migration.

Key features

  • Clean interface
  • Fast processing
  • No signup required
  • Works offline

Quick answers for DNS Lookup Tool

Can I look up multiple domains at once?
Yes, paste one domain per line and Look Up queries all of them in parallel for whichever record type you choose.
Where does this pull DNS data from?
Google's public DNS-over-HTTPS resolver (dns.google), a live query rather than cached results.
What record types are supported?
A, AAAA, MX, CNAME, TXT, and NS, one type per lookup, switchable with the tab control above the domain list.