--- title: How DNS Actually Works | daily.dev description: DNS (Domain Name System) translates human-readable domain names into IP addresses that computers use to communicate. When you type a URL, your browser checks... canonical: https://daily.dev/posts/how-dns-actually-works-y2qe3whex twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How DNS Actually Works | daily.dev og:description: DNS (Domain Name System) translates human-readable domain names into IP addresses that computers use to communicate. When you type a URL, your browser checks... og:url: https://daily.dev/posts/how-dns-actually-works-y2qe3whex og:image: https://api.daily.dev/og/posts/Y2Qe3WHex.png og:image:alt: How DNS Actually Works og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How DNS Actually Works **[Hackerstack](https://daily.dev/sources/hackerstack)** · [@gmkziz](https://daily.dev/gmkziz) · 86 upvotes · 1 comments ## Summary DNS (Domain Name System) translates human-readable domain names into IP addresses that computers use to communicate. When you type a URL, your browser checks its cache, then the OS cache, before querying a recursive resolver. The resolver contacts root servers, TLD servers, and finally authoritative name servers to find the correct IP address. DNS achieves speed and reliability through caching, anycast networks, redundant servers, GeoDNS, load balancing, and CDN integration. This hierarchical system processes billions of queries daily in milliseconds, making the internet user-friendly while maintaining machine efficiency. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@mattxo** · 0 upvotes > Very informative article, worth the read! --- Tags: [#career](https://daily.dev/tags/career), [#dns](https://daily.dev/tags/dns), [#networking](https://daily.dev/tags/networking), [#webdev](https://daily.dev/tags/webdev) [View this post on daily.dev](https://daily.dev/posts/how-dns-actually-works-y2qe3whex) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/how-dns-actually-works-y2qe3whex","headline":"How DNS Actually Works","text":"Shared: How DNS Actually Works","url":"https://daily.dev/posts/how-dns-actually-works-y2qe3whex","datePublished":"2025-09-11T05:33:16.954Z","dateModified":"2026-03-15T06:12:24.008Z","author":{"@type":"Person","name":"Gmkziz","url":"https://daily.dev/gmkziz","image":"https://media.daily.dev/image/upload/s--ODYTchVU--/f_auto/v1748470918/avatars/avatar_QPdBsxSNVbtyfsfujcF15?_a=BAMClqUq0","description":"Platform engineer and Tech writer at hackerstack.org - Join my Squad - Hackerstack (DevOps & Cloud)","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":600}},"image":"https://media.daily.dev/image/upload/s--CxzD6vbw--/f_auto/v1722860399/public/Placeholder%2005","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":86},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/LqumEiPyf"},"comment":[{"@type":"Comment","text":"Very informative article, worth the read!","datePublished":"2025-09-15T08:29:16.852Z","url":"https://daily.dev/posts/Y2Qe3WHex#c-UBYuxEW3Z","author":{"@type":"Person","name":"mattxo","url":"https://daily.dev/mattxo","image":"https://avatars.githubusercontent.com/u/89125469?v=4"}}],"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/hackerstack","name":"Hackerstack"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackerstack","item":"https://daily.dev/squads/hackerstack"},{"@type":"ListItem","position":3,"name":"How DNS Actually Works"}]} ```