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Merge pull request #139 from AdguardTeam/what-is-a-dns
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Add a video to DNS overview
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sonya-orlova authored Sep 12, 2023
2 parents c33ee74 + f149311 commit 7b1df89
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7 changes: 7 additions & 0 deletions .markdownlint.json
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6 changes: 4 additions & 2 deletions docs/intro.md
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## What is DNS?

DNS stands for "Domain Name System", and its purpose is to convert websites' names into IP addresses. Each time you go to a website, your browser sends a DNS query to a DNS server to figure out the IP address of the website. And a regular DNS resolver simply returns the IP address of the requested domain.
<iframe width="560" height="315" class="youtube-video" src="https://www.youtube-nocookie.com/embed/MSp7Ki03-LI" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

DNS stands for "Domain Name System", and its purpose is to convert website names into IP addresses. Each time you go to a website, your browser sends a DNS query to a DNS server to figure out the IP address of the website. And a regular DNS resolver simply returns the IP address of the requested domain.

:::note

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About 75% of AdGuard DNS traffic is encrypted. This is actually what differentiates content-blocking DNS servers from others. If you take a look at CloudFlare or Quad9 stats, you’ll see that encrypted DNS is just a small share of all queries.

AdGuard DNS exists in two main forms: [public AdGuard DNS](public-dns/overview.md) and [private AdGuard DNS](private-dns/overview.md). Both of these services do not require installing any apps. They are easy to set up and use, and provide users with the minimum features necessary to block ads, trackers, malicious websites, and adult content (if required). There are no restrictions on what devices they can be used with.
AdGuard DNS exists in two main forms: [public AdGuard DNS](public-dns/overview) and [private AdGuard DNS](private-dns/overview). Both of these services do not require installing any apps. They are easy to set up and use, and provide users with the minimum features necessary to block ads, trackers, malicious websites, and adult content (if required). There are no restrictions on what devices they can be used with.

Despite so many similarities, private AdGuard DNS and public AdGuard DNS are two different services. Their main difference is that you can customize private AdGuard DNS, while public AdGuard DNS cannot.

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