Introduction to DNS

Lessons Discussion
12

Hi INderpreet,

DNS allows us to use zones. A zone stores information about the domain. When you register a domain name, you have to tell the register which DNS servers you want to use for your domain name.

On the DNS server that is responsible for your domain (zone) you can create different records.

Let me give you a short overview of the different records:

  • A: the A record is used to store the IP address of a name. For example, 149.210.239.44 refers to "networklessons.com".
  • AAAA: this is the same as the A record but it's used for IPv6 addresses.
  • CNAME: the CNAME record is an alias for an A record. For example, I could use CNAME www.networklessons.com as an alias for networklessons.com.
  • MX: the MX record is used to store the hostname for the mailserver. For example, I could use this to tell that mail.networklessons.com is the mail server for this domain name. You will need an A record for mail.networklessons.com.

Rene

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