DNS Lookup
Query any DNS record type instantly. Check propagation across global resolvers, validate email security (SPF/DKIM/DMARC), and measure response times. Free, no signup required.
How to Use This Tool
- Enter any domain name (e.g., example.com) in the input field.
- Select a specific record type (A, MX, TXT, etc.) or choose ALL to query every type at once.
- Click Lookup to see DNS records with TTL values and response time.
- Review the Email Security panel to check SPF, DKIM, and DMARC configuration.
- Switch to Propagation Check mode to verify DNS records across 8 global resolvers.
- Export results as JSON or copy individual records with one click.
About the DNS Lookup Tool
The Domain Name System (DNS) is the internet's address book — it translates human-readable domain names like example.com into the IP addresses, mail servers, and other records that computers need to deliver web pages, route email, and verify domain ownership. Understanding your domain's DNS configuration is essential for website availability, email deliverability, and security.
Our free DNS Lookup tool queries 10 record types — A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, and CAA — using Google and Cloudflare's public DNS-over-HTTPS resolvers. Every query shows the actual record values, TTL (Time To Live), and response time in milliseconds, giving you the complete picture of your domain's DNS health.
What sets this tool apart is the built-in Email Security Analysis. When TXT records are queried, the tool automatically identifies and evaluates your SPF, DKIM, and DMARC records — the three pillars of email authentication. You'll see at a glance whether your domain is properly configured to prevent email spoofing and maximize inbox deliverability.
The Propagation Check mode queries your domain across 8 major DNS resolvers worldwide — including Google, Cloudflare, OpenDNS, Quad9, and regional providers — to verify whether your DNS changes have fully propagated. Each resolver shows its returned value and response time, making it easy to spot inconsistencies.
All queries run directly in your browser via DNS-over-HTTPS — no data passes through our servers. Your lookup history is saved locally for quick re-access and can be cleared at any time. Whether you're troubleshooting DNS issues, verifying a migration, or auditing email security, this tool gives you enterprise-grade DNS intelligence for free.
Frequently Asked Questions
What is a DNS lookup?
A DNS lookup queries the Domain Name System to find the records associated with a domain name. It translates human-readable domains (like example.com) into IP addresses and other data that computers use to route traffic across the internet.
What are the different DNS record types?
Common types include: A (IPv4 address), AAAA (IPv6), CNAME (alias), MX (mail server), TXT (text data for SPF/DKIM/DMARC), NS (nameserver), SOA (start of authority), PTR (reverse DNS), SRV (service locator), and CAA (certificate authority authorization).
What is DNS propagation?
DNS propagation is the time it takes for DNS record changes to update across all DNS servers worldwide. After a change, it can take from a few minutes to 48 hours for full propagation, depending on TTL values and resolver caching behavior.
What is TTL in DNS?
TTL (Time To Live) is the duration in seconds that a DNS record is cached by resolvers before they re-query the authoritative nameserver. Lower TTL means faster propagation but more DNS queries; higher TTL reduces load but delays changes.
What are SPF, DKIM, and DMARC?
SPF specifies which mail servers can send email for your domain. DKIM adds a digital signature for email authentication. DMARC tells receivers how to handle emails that fail SPF or DKIM. Together, they prevent spoofing and improve deliverability.
How do I check if my DNS changes have propagated?
Use the Propagation Check mode in this tool. It queries your domain across 8 DNS resolvers worldwide and shows whether each returns the updated records. When all resolvers show consistent results, propagation is complete.
What is a CAA record?
A CAA (Certificate Authority Authorization) record specifies which certificate authorities are allowed to issue SSL/TLS certificates for your domain. It helps prevent unauthorized certificate issuance and is a recommended security practice.
Is this DNS lookup tool free?
Yes. This tool is 100% free with no signup, no API key, and no usage limits. All queries are performed directly in your browser using public DNS-over-HTTPS resolvers (Google and Cloudflare), so your data never passes through our servers.