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Networking

How DNS works

What happens between typing a website's name and your browser connecting: resolvers, root, TLD and authoritative servers, record types like A, CNAME, MX and TXT, caching and TTLs, and the commands for checking it yourself.

CodexBash, , 5 min read

Computers find each other by number, IP addresses like 142.250.183.46. People remember names, like google.com. The Domain Name System turns the second into the first, billions of times a day, usually in a few milliseconds. It is also one of the most common causes of "the site is down" when the site is fine. This article follows one lookup from start to finish and explains the records you will configure yourself.

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