🗄️ DNS Guides & Tools
Everything about how DNS actually works — record types, propagation, caching, DNSSEC, and the tools to look it all up.
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Featured Guide
Networking
DNS Propagation Guide: Why Changes Take Time & How to Speed Up
Understand TTL, resolver caching, and global propagation mechanics — plus proven techniques to minimize downtime during a DNS migration.
Read the guide →🛠️ RELATED TOOLS
DNS Tools
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DNS Lookup
Look up any DNS record type for a domain
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Reverse DNS Lookup
Find the hostname behind an IP address
📧
MX Lookup
Check a domain's mail exchange records
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DNSSEC Lookup
Verify DNSSEC signing on a domain
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DNS Propagation Checker
See DNS propagation status worldwide
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DNS Cache Checker
Check what's cached at your resolver
📚 20 GUIDES
All DNS Guides
DNS
A Record Errors: Decoding NXDOMAIN, SERVFAIL, and Resolution Failures
DNS
A Record Explained: The DNS Record That Turns Names Into Addresses
DNS
A Record vs CNAME: Which One Should Actually Point Where
DNS
AAAA Record Explained: The DNS Record Behind Every IPv6 Address
DNS
AAAA Record Troubleshooting: A Diagnostic Workflow That Actually Works
DNS
Apex Domain Issues: Why Your Root Domain Won't Take a CNAME
DNS
CDN CNAME Setup: How Content Delivery Networks Use DNS Aliasing
DNS
CNAME Explained: How DNS Aliasing Actually Works
DNS
CNAME Flattening Explained: How Providers Fake an Apex CNAME
DNS
CNAME Restrictions: Every Rule DNS Actually Enforces
DNS
Domain Verification: How Proving You Own a Domain Actually Works
DNS
Dual Stack DNS Explained: Running IPv4 and IPv6 Together, Correctly
DNS
Google Domain Verification: TXT Method, Explained Properly
DNS
How to Configure an A Record: A Practical Walkthrough
DNS
How to Configure an AAAA Record: Step-by-Step for Every Major Provider
DNS
IPv6 DNS Records: Every Record Type That Touches IPv6, Explained
DNS
Microsoft 365 Domain Verification: The TXT and MX Methods
DNS
Multiple A Records: Round-Robin DNS, Load Balancing & Its Real Limits
DNS
TXT Record Security: Where a Text Field Becomes an Attack Surface
DNS
TXT Records: The DNS Junk Drawer That Runs Half the Internet