DNS (Domain Name System)

Key Components

Authoritative Name Servers (Delegation Set)

ns-576.awsdns-08.net.
ns-1086.awsdns-07.org.
ns-1630.awsdns-11.co.uk.
ns-47.awsdns-05.com.
pdns1.ultradns.net.
pdns6.ultradns.co.uk.

Resolver

  • Requests list of authoritative name servers for TLD from root name servers

TLD (Top-Level Domain)

  • The last part of the domain name (e.g., .com, .org, .net)

DNS Providers

  • Services that manage DNS records for domains

DNS Server Check

Using nslookup

Check DNS server response:

nslookup www.google.com

This command queries the name server for the IP address associated with the domain.

Reference