DNS Lookup

DNS Lookup Tool — Check DNS Records Online Free

DNS Lookup is a free online tool for querying DNS records through public DNS over HTTPS (DoH) servers. It helps website owners, developers, and IT professionals troubleshoot domain configuration, verify DNS propagation, and inspect email authentication records.

Unlike desktop DNS utilities, our tool works entirely in your browser with no installation required.

How to Use the DNS Lookup Tool

1. Enter a domain name in the input field (e.g., example.com) 2. Select the record type you want to query (A, AAAA, CNAME, MX, TXT, NS, or ALL) 3. Choose a DoH server — Cloudflare, Google, or Quad9 4. Click Lookup to run the query 5. Review the results: IP addresses for A records, mail servers for MX, text values for TXT

You can also compare results between different DoH servers to check for DNS propagation.

Common Use Cases

• Website troubleshooting — verify that your domain resolves to the correct IP address
• Email delivery — check MX, SPF, DKIM, and DMARC records to ensure email authentication
• DNS propagation check — compare results across multiple DNS servers after making changes
• Security audit — inspect TXT records for unexpected entries, verify DNSSEC status
• Development — test DNS configuration before going live with a new domain

Understanding DNS Record Types

• A record — maps a domain to an IPv4 address (e.g., 192.0.2.1)
• AAAA record — maps a domain to an IPv6 address
• CNAME record — aliases one domain to another (e.g., www → @)
• MX record — specifies mail servers for the domain, with priority values
• TXT record — stores text data, commonly used for SPF, DKIM, and DMARC
• NS record — indicates which nameservers are authoritative for the domain
• SOA record — contains administrative information about the zone

Common Mistakes

• Confusing A records with CNAME — A records point to IPs, CNAME points to other domains
• Missing trailing dot — some DNS configurations require a trailing dot (.) in fully qualified domain names
• Propagation delay — DNS changes can take 24-48 hours to propagate globally; our tool helps you monitor this
• TTL too high — high TTL values slow down propagation when you need to make changes
• SPF too many lookups — SPF records with more than 10 DNS lookups will fail validation

Why Use Our DNS Lookup Tool?

• Free — no registration, no limits, no paywall
• Private — queries are made via encrypted DNS over HTTPS
• Multiple servers — compare results from Cloudflare, Google, and Quad9
• All record types — A, AAAA, CNAME, MX, TXT, NS, SOA, SPF, DKIM, DMARC
• No installation — works in any modern browser