Skip to main content
    EmailToolBox LogoEmailToolBox
    Home
    SuperTool

    All-in-one DNS and email testing tool

    MX Lookup

    Check mail exchange records

    Blacklists

    Monitor IP reputation

    DMARC

    Analyze DMARC policies

    Diagnostics

    Email delivery diagnostics

    Email Health

    Comprehensive email domain health

    DNS Lookup

    DNS record lookup tools

    Header Analyzer

    Email header analyzer

    All Tools

    Browse all available tools

    Super ToolsBlacklistsEmail HealthGuides
    All Tools

    CNAME Record Lookup

    Find canonical name records and aliases

    CNAME records create aliases that point one domain name to another, useful for subdomains and CDNs.
    Domain Lookup
    Enter a domain or subdomain to find its CNAME records
    What are CNAME Records?

    CNAME (Canonical Name) records create aliases that point one domain name to another. Instead of pointing directly to an IP address, they point to another domain name, which then resolves to an IP address.

    Common Use Cases:

    • WWW Subdomain: Point www.example.com to example.com
    • CDN Integration: Point assets.example.com to cdn.provider.com
    • Service Aliases: Point blog.example.com to hosting.provider.com
    • Load Balancing: Point to load balancer hostnames

    How CNAME Resolution Works:

    1. DNS query for www.example.com
    2. DNS returns CNAME pointing to example.com
    3. DNS then queries for example.com A record
    4. Final IP address is returned to client

    Related Tools

    MX Lookup
    Check mail servers
    Blacklist Checker
    Check IP reputation
    DNS Lookup
    DNS record queries
    SPF Checker
    Validate SPF records
    DMARC Analyzer
    Analyze DMARC policies
    Header Analyzer
    Analyze email headers
    DKIM Checker
    Verify DKIM signatures
    WHOIS Lookup
    Domain registration info
    SMTP Test
    Test SMTP connectivity
    SSL Certificate
    Check SSL certificates
    DNS Propagation
    Check DNS propagation
    Ping Test
    Test network connectivity
    Traceroute
    Trace network path
    Subnet Calculator
    Calculate IP subnets
    What Is My IP
    Check your IP address

    Need Help?

    Our tools are designed to be intuitive, but if you need assistance, we're here to help.

    DocumentationContact Support

    About Our Tools

    Professional-grade email and DNS diagnostic tools trusted by IT professionals worldwide.

    Free to UseNo RegistrationReal-time Results
    EmailToolBox LogoEmailToolBox

    Professional email testing platform for developers, administrators, and marketers.

    Tools

    • MX Lookup
    • SPF Checker
    • DKIM Checker
    • DMARC Analyzer

    Resources

    • Email Guides
    • API Documentation
    • Blog
    • FAQ

    Support

    • Contact Us
    • Help Center
    • Privacy Policy
    • Terms of Service

    © 2026 EmailToolBox. All rights reserved.