🌐 DNS Lookup Tool

DNS Lookup Tool

Check DNS records for any domain — A, AAAA, MX, CNAME, TXT, NS, SOA, and more. Instant DNS propagation checker for website owners and developers.

🌐 DNS Lookup

Enter domain without https://. Fetches real-time DNS records.

Filter Record Types

What is DNS & Why It Matters

DNS (Domain Name System) is like the phonebook of the internet. It translates human-friendly domain names (like google.com) into IP addresses that computers use to connect. When you type a website address, DNS servers find the correct IP address and direct your browser there.

Common DNS record types: A records point to IPv4 addresses, MX records direct email to mail servers, CNAME records create aliases, TXT records store verification and security data (SPF, DKIM for email).

Use this tool to debug DNS issues, verify your records after making changes, or audit competitor DNS configurations.

📘 How to Use This Tool

  1. Enter a domain name (e.g., google.com, tool-hub-7.app)
  2. Click "Lookup DNS"
  3. Wait 2-3 seconds for real-time DNS data
  4. Filter by record type using the buttons above
  5. Check A, MX, CNAME, TXT, NS records and more
  6. Use results to debug DNS issues or verify configurations

📊 When to Use DNS Lookup

After changing DNS records: Verify propagation
Email not working: Check MX and TXT (SPF) records
Website down: Verify A/AAAA records point correctly
Competitor research: See their mail servers, subdomains
Security audit: Check for exposed TXT records

❓ Frequently Asked Questions

1. What is DNS propagation and how long does it take?

DNS propagation is the time it takes for DNS changes to spread across all global DNS servers. It can take 24-48 hours, though often faster (minutes to hours).

2. What's the difference between A and AAAA records?

A records point to IPv4 addresses (e.g., 192.168.1.1). AAAA records point to IPv6 addresses (e.g., 2001:db8::1). IPv6 is newer and provides more addresses.

3. What are MX records used for?

MX (Mail Exchange) records tell email servers where to deliver email for your domain. They include priority values — lower numbers are tried first.

4. What are TXT records commonly used for?

TXT records store text information. Common uses: SPF (email authentication), DKIM (email signing), domain verification (Google Search Console), and DMARC policies.

5. Why can't I see my DNS changes immediately?

DNS records are cached at multiple levels (browser, OS, ISP, recursive resolvers). Changes take time to propagate — usually minutes to 48 hours depending on TTL settings.

6. What is TTL in DNS?

TTL (Time To Live) tells resolvers how long to cache a DNS record before asking again. Lower TTL means changes propagate faster but more queries to your DNS server.

7. Is my DNS lookup data stored?

No. All lookups are performed in real-time via public DNS APIs. ToolHub does not store any domain search history.

🔗 More Network Tools

SSL Checker WHOIS Lookup IP Location

Explore 55+ free tools — all private, no sign-up, always free.

⚠ī¸ Disclaimer: This tool performs live DNS lookups using public DNS resolvers. Results may be cached and vary by geographic location.

🔒 100% private — no data storage.