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Kordu Tools
Network & IP Runs in browser Popular Updated 30 Mar 2026

DNS Lookup

Query all DNS record types for any domain — A, AAAA, MX, TXT, CNAME, NS, SOA, CAA — via Cloudflare DoH.

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How to use DNS Lookup

  1. Enter a domain

    Type or paste the domain name you want to look up — for example, example.com.

  2. Run the lookup

    Click the Lookup button or press Enter. All record types are queried in parallel via Cloudflare DNS-over-HTTPS.

  3. Review results by type

    Browse results grouped by record type. Each record shows the name, value, and TTL in seconds.

  4. Copy results

    Click Copy All to export every record to your clipboard as plain text for documentation or comparison.

DNS Lookup FAQ

What DNS record types does this tool query?
A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA — covering web hosting, email delivery, delegated authority, SPF/DKIM/DMARC validation, and certificate authority restrictions.

Where do the DNS queries go?
All queries are sent to Cloudflare's public DNS-over-HTTPS resolver at cloudflare-dns.com. No other servers are involved and no data is stored.

What does NXDOMAIN mean?
NXDOMAIN (Non-Existent Domain) means the domain does not exist in the DNS system. It may be unregistered, expired, or misspelled.

How accurate are the results?
Results reflect what Cloudflare's resolver sees at the time of the query, including any cached values up to the record TTL. For freshly changed records, allow the TTL to expire before expecting updated results.

Is my query data stored?
The only external requests are the DNS-over-HTTPS queries to Cloudflare. This tool itself does not log or store any queries.

Can I check DNS propagation?
This tool queries Cloudflare's resolver. To check propagation across multiple global resolvers, run the lookup from different networks or use region-specific DNS checkers.

What is a TTL?
TTL (Time to Live) is the number of seconds resolvers are allowed to cache a DNS record before re-querying the authoritative server. Lower TTLs mean faster propagation of changes.

How do I check SPF or DMARC records?
SPF, DKIM, and DMARC are stored in TXT records. Run a lookup and check the TXT section — or use the dedicated SPF Checker tool for detailed validation and warnings.

What is a CAA record?
A CAA (Certification Authority Authorization) record specifies which certificate authorities are allowed to issue SSL certificates for the domain, helping prevent certificate mis-issuance.

Background

Check every DNS record for any domain in one query. This tool fires parallel lookups for A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA records via Cloudflare's public DNS-over-HTTPS resolver, then displays results grouped by type with name, value, and TTL for each record. NXDOMAIN responses are highlighted so you can instantly identify non-existent domains or missing record types.

Use the Copy All button to grab every result as plain text. All logic runs in your browser — no data is sent to any third party beyond the DNS-over-HTTPS queries to Cloudflare.

Who is this for: developers verifying DNS propagation after a domain migration, sysadmins debugging email delivery with MX and SPF records, security researchers auditing domain configurations, and domain owners checking their setup. Covers the same record types as MXToolbox and DNSChecker — without the account walls or ad-heavy UI.

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SPF Record Checker

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WHOIS Lookup

Look up domain registration details — registrar, creation/expiry dates, nameservers, and DNSSEC — via RDAP.

SSL Certificate Checker

Check SSL/TLS certificate validity, issuer, expiry, and SANs for any domain via Certificate Transparency logs.

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