DNS, or the Domain Name System, resolves human readable domain names (for example, http://www.hacksheets.in) to machine readable IP addresses (for example, 18.104.22.168).
DNS Resolution Steps
- A user types ‘www.hacksheets.in’ into a web browser and the system sends the query to a DNS resolver.
- This resolver then sends the query to the DNS root nameserver (.).
- The root server then responds to the resolver with the address of a Top-Level Domain (TLD) DNS server (.in)
- The resolver then makes a request to the .in TLD.
- The TLD server then responds with the IP address of the domain’s nameserver, http://www.hacksheets.in.
- The resolver sends a query to the domain’s nameserver.
- The IP address for http://www.hacksheets.in is then returned to the resolver
- The DNS resolver then responds to the web browser with the IP address of the domain.
- The browser makes an HTTP request to the IP address.
- The server at that IP returns the webpage to be rendered in the browser.