🌐 DNS Lookup Tool

Check DNS records for any domain including A, AAAA, CNAME, MX, TXT, NS, and SOA records

Version 2.1.0 - Updated September 2025
?
Enter the domain name you want to check DNS records for (e.g., example.com).
?
Select which DNS record types you want to look up. A records map domain names to IP addresses, MX records specify mail servers, etc.
?
Specify a custom DNS server to use for the lookup. Leave empty to use your system's default DNS servers.
DNS lookup results will appear here

Embed This Tool

Want to embed this DNS lookup tool on your website? Use this code:

<iframe src="https://yoursite.com/dns-lookup" width="100%" height="600" frameborder="0"></iframe>

🎯 DNS Record Examples

🌐 A Record (Address Record)

Maps a domain name to an IPv4 address:

example.com. 3600 IN A 93.184.216.34

Purpose: Points domain to server IP address

TTL: 3600 seconds (1 hour)

🔗 AAAA Record (IPv6 Address Record)

Maps a domain name to an IPv6 address:

example.com. 3600 IN AAAA 2606:2800:220:1:248:1893:25c8:1946

Purpose: Points domain to IPv6 server address

TTL: 3600 seconds (1 hour)

📧 MX Record (Mail Exchange)

Specifies mail servers for a domain:

example.com. 3600 IN MX 10 mail1.example.com. example.com. 3600 IN MX 20 mail2.example.com.

Purpose: Directs email to mail servers

Priority: Lower numbers have higher priority

📝 CNAME Record (Canonical Name)

Creates an alias from one domain to another:

www.example.com. 3600 IN CNAME example.com.

Purpose: Creates domain aliases

Note: Cannot be used with other record types

📄 TXT Record (Text Record)

Stores text information for various purposes:

example.com. 3600 IN TXT "v=spf1 include:_spf.google.com ~all" example.com. 3600 IN TXT "google-site-verification=abc123"

Purpose: SPF, DKIM, verification codes

Uses: Email authentication, domain verification

🔧 NS Record (Name Server)

Specifies authoritative name servers for a domain:

example.com. 86400 IN NS ns1.example-dns.com. example.com. 86400 IN NS ns2.example-dns.com.

Purpose: Delegates domain to name servers

TTL: Typically longer (24 hours)

📚 DNS Tutorials

🌐

Understanding DNS: A Complete Guide

Learn the fundamentals of the Domain Name System, how it works, and why it's essential for the internet.

Read Tutorial →
🚫

Common DNS Configuration Mistakes

Discover the most common DNS errors that can break your website and email, and how to fix them.

Read Tutorial →
⚡

DNS Performance Optimization

Learn how to optimize your DNS configuration for faster website loading and better user experience.

Read Tutorial →
🔧

Advanced DNS Record Types

Deep dive into advanced DNS records like SRV, PTR, CAA, and how to use them effectively.

Read Tutorial →
📊

DNS Monitoring and Troubleshooting

Tools and techniques for monitoring your DNS and troubleshooting common issues.

Read Tutorial →
🛡️

DNS Security Best Practices

How to secure your DNS configuration against attacks and prevent domain hijacking.

Read Tutorial →

⚖️ DNS Lookup Tool Comparison

Compare our free DNS lookup tool with other popular tools and services:

Feature Our Tool Tool A Tool B Tool C
Free to Use ✅ ✅ ❌ (Premium) ✅
Multiple Record Types ✅ ✅ ✅ ❌
Custom DNS Server ✅ ❌ ✅ ❌
Bulk Lookup ✅ ❌ ✅ ❌
Export Results ✅ ❌ ✅ ❌
Lookup History ✅ ✅ ✅ ❌
Mobile Friendly ✅ ✅ ✅ ✅
Educational Content ✅ ❌ ❌ ❌
Real-time Results ✅ ✅ ✅ ❌

Why Choose Our DNS Lookup Tool?

🔧 Comprehensive Record Support

Support for all major DNS record types including A, AAAA, MX, CNAME, TXT, NS, SOA, PTR, and SRV.

📊 Detailed Analysis

Get detailed information about each record including TTL, priority, and authoritative name servers.

🚀 Fast & Reliable

Uses multiple DNS servers for reliable lookups with fast response times.

🎓 Educational Focus

Not just a tool - includes comprehensive guides, examples, and tutorials to help you understand DNS.

📝 Version History & Changelog

Version 2.1.0 - Latest

September 15, 2025
  • 🎉 Added custom DNS server selection
  • 📊 Enhanced DNS record analysis and visualization
  • 📱 Improved mobile responsiveness and touch interactions
  • 🔧 Added embed code functionality for easy integration
  • 📚 Expanded educational content and examples
  • 🎨 Updated UI with better accessibility and contrast

Version 2.0.0

August 20, 2025
  • 🔄 Complete UI redesign with modern styling
  • 📚 Added comprehensive tutorial section
  • 📝 Introduced tabbed navigation for better organization
  • ⚖️ Added tool comparison feature
  • 💾 Implemented download functionality for DNS results
  • 📋 Enhanced copy functionality with better feedback

Version 1.2.0

July 10, 2025
  • ✅ Added support for SRV and PTR records
  • 🛡️ Improved error handling and validation
  • 📖 Added real-world examples and use cases
  • 🐛 Fixed DNS resolution issues for certain domains
  • ♿ Enhanced accessibility with ARIA labels

Version 1.1.0

June 5, 2025
  • 🎨 Improved visual design with gradient backgrounds
  • 📱 Added responsive design for mobile devices
  • ⚠️ Added warnings for common DNS configuration issues
  • 📋 Implemented one-click copy functionality
  • 🔧 Fixed layout issues on smaller screens

Version 1.0.0

May 15, 2025
  • 🎉 Initial release of DNS Lookup Tool
  • 🔍 Support for basic DNS record lookup
  • ⚡ Real-time results and validation
  • 📚 Comprehensive documentation and examples
  • ✨ Clean, modern user interface

🔮 Upcoming Features

📋 Planned for Next Release:

  • Bulk DNS lookup for multiple domains
  • DNS propagation checking across global servers
  • Historical DNS record tracking and changes
  • DNS zone file import and analysis
  • Dark/Light theme toggle
  • API access for developers
  • Browser extension for quick lookups

What is DNS?

DNS (Domain Name System) is the phonebook of the internet. It translates human-readable domain names (like example.com) into machine-readable IP addresses (like 93.184.216.34) that computers use to connect to each other.

🟢 Benefits of Understanding DNS

✅ Advantages of Proper DNS Knowledge:

  • Website Management: Control how your domain resolves to servers
  • Email Configuration: Set up proper mail routing with MX records
  • Performance Optimization: Use DNS to improve website loading times
  • Security Enhancement: Implement SPF, DKIM, and DMARC for email security
  • Service Integration: Connect domains to various services and platforms
  • Troubleshooting: Diagnose and fix website and email issues

🔴 Common DNS Mistakes

❌ DNS Errors to Avoid:

  • Using incorrect nameserver settings
  • Setting TTL values too high or too low
  • Creating CNAME records that conflict with other records
  • Forgetting to update DNS when moving hosting
  • Using incorrect MX record priorities
  • Not implementing proper SPF records for email

DNS Record Types

🌐 A Record

Maps a domain name to an IPv4 address. Essential for website hosting.

🔗 AAAA Record

Maps a domain name to an IPv6 address. Important for modern internet infrastructure.

📧 MX Record

Specifies mail servers for a domain. Critical for email delivery.

📝 CNAME Record

Creates an alias from one domain to another. Useful for subdomains and redirects.

📄 TXT Record

Stores text information. Used for SPF, DKIM, domain verification, and more.

🔧 NS Record

Specifies authoritative name servers for a domain. Fundamental for DNS delegation.

How DNS Works

When you type a domain name in your browser, a DNS lookup process occurs to find the corresponding IP address. The process works as follows:

  1. Query: Your computer checks its local cache for the domain's IP address
  2. Recursive Resolver: If not cached, your computer asks your ISP's DNS resolver
  3. Root Server: The resolver queries a root server to find the TLD (Top Level Domain) server
  4. TLD Server: The root server directs to the appropriate TLD server (.com, .org, etc.)
  5. Authoritative Server: The TLD server provides the authoritative name servers for the domain
  6. Response: The authoritative server returns the IP address for the domain
  7. Caching: The resolver caches the result for future requests
  8. Connection: Your browser connects to the IP address to load the website

Best Practices for DNS Management

🔍 Recommended DNS & Web Tools

Enhance your website management with these trusted tools and services:

Cloudflare DNS

Free DNS & CDN Service

Google Domains

Domain Registration

Namecheap

Domain & Hosting

DNSimple

DNS Management

Pingdom

Website Monitoring