Course Content

  • DNS enumuration

Course Content


The "A" stands for "address," and this is the most basic sort of DNS record: it specifies a domain's IP address. If you look up's DNS records, the A record now returns an IP address of 104.17. 210.9.

Using a terminal and the command nslookup is the most efficient approach to check the domain's DNS records. On practically all operating systems, this command will work (Windows, Linux, and macOS).

An A Record, for example, is used to point a logical domain name, such as "," to Google's hosting server's IP address, "" These records direct traffic from and to the IP address

If the MX record leads to an A record in another domain, the mail-only domain does not require an A record. Only the mail-only domain is in question; will have an A record in the domain, not the domain.

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