The Simple Explanation
DNS is the internet's phone book. When you type "google.com", DNS looks up the actual address (IP) where Google's servers live, so your browser knows where to go.
Computers communicate using IP addresses like "142.250.80.46". But humans can't remember that. DNS translates human-friendly names (google.com) into computer-friendly addresses (142.250.80.46).
How DNS Works (4 Steps)
You type "example.com"
Your browser needs to find where this site lives
Browser asks DNS resolver
"What's the IP address for example.com?"
DNS resolver looks it up
Checks multiple servers to find the answer
Browser connects to IP
Now it knows where to goâsite loads!
Common DNS Record Types
Why DNS Matters for You
Connecting Domain to Hosting
When you buy hosting, you update DNS records to point your domain to your host's servers.
Setting Up Email
MX records tell the internet where to deliver emails for your domain.
Site Speed
Fast DNS = faster initial connection. Premium DNS providers like Cloudflare speed this up.
Security
DNSSEC and other features protect against DNS-based attacks.
Key Takeaway
DNS translates domain names to IP addresses. You'll interact with it when connecting domains to hosting or setting up email. Most registrars handle DNS for you automatically.
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