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Home DNS resolution

DNS resolution

(also DNS lookup)

DNS resolution definition

DNS resolution refers to translating an IP address to a domain name, allowing users to access the website through the site’s URL. An IP address consists of numbers identifying a website on the network. To keep it user-friendly, we use domain names rather than IP addresses. Domain (or DNS) resolution converts domain names to IP addresses.

How DNS resolution works

  1. 1.A user types a URL into the address bar. When they hit “Enter,” the browser sends a DNS query to find the website for this address.
  2. 2.The query interacts with the recursive resolver server, typically operated by your ISP, your wireless carrier, or a third-party provider.
  3. 3.The recursive resolver talks to a root server. Root servers run globally and know DNS information about top-level domains (TDLs).
  4. 4.Each TDL stores DNS information about second-level domains within the top-level domain. When the query reaches the TDL, it provides the IP address of the domain’s name server.
  5. 5.The DNS provides the full IP address of the domain to the recursive resolver.
  6. 6.Finally, the website appears on the user’s screen.