DNS Lookup Tool

Perform comprehensive DNS lookups for any domain. Get detailed information about A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records with TTL values in real-time.Fast, accurate, and completely free to use.

Enter Domain Name

Enter a domain without http:// or https:// (e.g., example.com)

How to use:

  1. Enter a domain name in the input field (e.g., example.com or 1tools.app).
  2. Click the Lookup DNS button or press Enter to perform the lookup.
  3. View all DNS records organized by type: A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA.
  4. Each record displays its value and TTL (Time To Live) in seconds.
  5. Click any Copy button to copy specific records to your clipboard.
  6. Check the summary section for a quick overview of record counts.
  7. Use this tool to verify DNS propagation, troubleshoot issues, or analyze domain configuration.

Tip: Remove http://, https://, www., or any paths from the domain before lookup.

Example Output

Domain: 1tools.app

A Records (IPv4):

172.67.219.174 (TTL: 300s) 104.21.45.227 (TTL: 300s)

AAAA Records (IPv6):

2606:4700:3037::6815:2de3 (TTL: 300s) 2606:4700:3036::ac43:dbae (TTL: 300s)

TXT Records:

"google-site-verification=GFlF-YcFFZkZgE8JqGIs_Bz3eZKJP1pNcnfkse9ltGE" "yandex-verification: df3f11708ee243fa"

NS Records (Name Servers):

bruce.ns.cloudflare.com. (TTL: 86400s) elinore.ns.cloudflare.com. (TTL: 86400s)

DNS Lookup: Unveil Your Domain's DNA

Ever wondered what's happening behind the scenes when you type a domain name? DNS (Domain Name System) is like the internet's phonebook—it translates human-friendly domain names into IP addresses that computers understand. I've built this DNS lookup tool to help you peek under the hood and see exactly what records are configured for any domain.

This tool is essential for developers configuring websites, system administrators managing infrastructure, security professionals auditing domains, or anyone curious about how DNS works. One lookup gives you comprehensive information about A records, MX records, nameservers, and more—all the pieces that make domain resolution possible.

Why Use DNS Lookup?

  • Troubleshooting: Diagnose DNS issues, verify propagation, or check if records are configured correctly.
  • Security Audits: Verify SPF, DKIM, DMARC records in TXT entries, check CAA records for SSL validation.
  • Migration Planning: Compare old and new DNS configurations before switching providers.
  • Email Setup: Verify MX records to ensure email delivery is properly configured.
  • Performance Analysis: Check TTL values, analyze nameserver distribution, and optimize DNS response times.
  • Learning: Understand how DNS works by examining real-world configurations.

Understanding DNS Record Types

A Records map domain names to IPv4 addresses—they're the most fundamental DNS record type. AAAA Records do the same for IPv6 addresses, future-proofing your infrastructure. CNAME Records create aliases, pointing one domain to another, perfect for subdomains like www or blog.

MX Records direct email to mail servers with priority values—lower numbers have higher priority. TXT Records store text information, commonly used for domain verification (Google, Microsoft), SPF email authentication, and DKIM signatures. NS Records identify authoritative nameservers that control your domain's DNS.

SOA Records contain administrative information about your zone, including serial numbers for tracking changes. CAA Records specify which Certificate Authorities can issue SSL certificates for your domain, enhancing security by preventing unauthorized certificate issuance.

TTL: The Caching Secret

TTL (Time To Live) tells DNS resolvers how long to cache records before checking for updates. A 300-second TTL means resolvers cache the record for 5 minutes. Lower TTLs mean faster updates but more DNS queries; higher TTLs reduce load but slow down changes. When migrating domains, I always lower TTL values 24-48 hours in advance to ensure quick propagation.

Tips from Experience

After making DNS changes, use this tool to verify they've propagated correctly. DNS propagation isn't instant—it can take anywhere from minutes to 48 hours depending on TTL values and resolver caching. I check DNS records immediately after changes to catch typos early, then again after the TTL period expires.

For troubleshooting email delivery issues, always start by checking MX records—they're the most common culprit. Verify TXT records contain proper SPF and DMARC configurations to prevent your emails from being marked as spam. Security-conscious? Check CAA records to ensure only authorized CAs can issue certificates for your domain.

Privacy & Performance

All DNS lookups are performed in real-time using our API. We don't store query history or track which domains you look up. The tool queries authoritative nameservers directly, giving you accurate, up-to-date information without relying on potentially stale cached data from third-party resolvers.

Final Thoughts

DNS is the unsung hero of the internet—invisible until something breaks. This DNS lookup tool gives you X-ray vision into domain configurations, helping you troubleshoot issues, verify setups, and understand how the internet's addressing system actually works. Whether you're a developer deploying applications, a sysadmin managing infrastructure, or just curious about DNS, this tool provides the insights you need. Ferry Irwandi here, making DNS lookups simple, fast, and informative.