DNS (Domain Name System)
What Is DNS? The Internet’s Address Book, Explained Simply
What is it?
DNS is like the phonebook of the internet. It translates human-readable website names (like google.com) into IP addresses (like 142.250.187.206), which computers use to locate each other.
Why it matters:
Without DNS, you’d have to memorize numeric IP addresses to access websites. It’s also a target for cyberattacks such as DNS spoofing.
Advanced uses:
- DNS filtering for content control
- Custom DNS for faster performance or added security (e.g., Cloudflare DNS)