DNS Checker

Professional DNS lookup tool for checking domain records. Get instant results for A, AAAA, CNAME, MX, TXT, NS, and SOA records with detailed analysis.

Domain Lookup

Enter a domain name without http:// or https://

How DNS Checker Works

1. Enter Domain

Input the domain name you want to check. Our tool accepts any valid domain format.

2. Select Records

Choose which DNS record types to check. All major record types are supported.

3. View Results

Get instant DNS lookup results with detailed information about each record found.

Frequently Asked Questions

What is DNS?

DNS (Domain Name System) translates human-readable domain names into IP addresses that computers can understand, making the internet accessible.

Why check DNS records?

DNS record checking helps troubleshoot website issues, verify domain configuration, set up email services, and ensure proper DNS propagation.

How long does DNS propagation take?

DNS changes typically propagate worldwide within 24-48 hours, though it can take up to 72 hours for all DNS servers to update globally.

Can I check private domains?

You can check any publicly registered domain. Private or local domains that aren't registered with public DNS servers cannot be checked.

Understanding DNS Records & Domain Configuration

DNS (Domain Name System) is the backbone of the internet, translating human-readable domain names into IP addresses that computers can understand. Understanding DNS records is crucial for website owners, network administrators, and anyone involved in domain management.

Essential DNS Record Types:

  • A Records: Map domain names to IPv4 addresses, directing traffic to web servers
  • AAAA Records: Map domain names to IPv6 addresses for modern networking
  • CNAME Records: Create domain aliases, useful for subdomains and service redirects
  • MX Records: Specify mail servers responsible for email delivery
  • TXT Records: Contain verification data for SSL certificates, SPF, DKIM, and domain ownership
  • NS Records: List authoritative nameservers that host the domain's DNS information
  • SOA Records: Contain administrative information about the domain zone

DNS Configuration Best Practices:

Website Setup

  • • A/AAAA records for web traffic
  • • CNAME for www subdomain
  • • TXT records for SSL verification
  • • Proper TTL settings

Email Configuration

  • • MX records with correct priorities
  • • SPF TXT records for anti-spam
  • • DKIM TXT records for authentication
  • • DMARC TXT records for policy

Common DNS Issues & Solutions:

  • Propagation Delays: DNS changes can take 24-72 hours to propagate globally
  • Cached Records: Local DNS caches may serve outdated information
  • MX Priority: Lower numbers indicate higher priority for mail servers
  • TTL Values: Time-to-live settings control how long records are cached
  • Redundancy: Multiple A/AAAA/MX records provide failover protection

Regular DNS monitoring and proper configuration are essential for maintaining reliable online services. Our DNS checker tool provides the information you need to verify your domain's DNS health and troubleshoot any issues that may arise.