KitJade
Network & CybersecurityPublic lookup

DNS Lookup

Query DNS records over DoH with multiple record types.

Use the DNS Lookup tool

Calls public DNS / lookup servicesUpdated Report a problem

What this dns lookup does

DNS Lookup queries authoritative DNS data over DNS-over-HTTPS (DoH), so the request is encrypted between your browser and the resolver. Choose a record type and see the values, TTLs and response status, with an option to switch between Cloudflare and Google resolvers when results differ due to caching.

The tool also supports PTR lookups for reverse DNS. Common uses include verifying email authentication records, checking whether a domain is delegated correctly, and confirming which IP a CNAME chain finally resolves to.

Why use it

  • Confirm that new DNS records have propagated before a launch.
  • Verify SPF, DKIM and DMARC TXT records for email deliverability.
  • Trace a CNAME chain to find the real host behind a subdomain.

How to use it

  1. 1Enter a domain name — not a full URL with https://.
  2. 2Select the record type, or query ALL for a summary.
  3. 3Choose a resolver if you want a second opinion.
  4. 4Read the answer section and copy the raw JSON if needed.

Worked examples

Mail records

Input

Type MX · example.com

Output

0 . (null MX) — a domain that does not accept email.

Null MX (RFC 7505) is an explicit way to say a domain receives no mail.

Verify SPF

Input

Type TXT · example.com

Output

v=spf1 -all

A domain with no sending infrastructure should publish an SPF record ending in -all.

Common mistakes

  • Entering https:// or a path instead of a bare hostname.
  • Checking only one resolver and concluding a record is missing — caches may still hold the old answer.
  • Publishing multiple SPF records, which breaks SPF evaluation.

Frequently asked questions

Does this use my ISP's DNS?
No. The query is sent over HTTPS directly to a public DoH resolver, so your local resolver is bypassed.
Why do two resolvers return different answers?
DNS is cached at many layers. TTLs, anycast routing and recent changes can cause temporary differences. Recheck after the TTL expires.
Can I look up reverse DNS?
Yes. Choose PTR and enter an IP address; the tool converts it to the appropriate in-addr.arpa or ip6.arpa name.

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