Certified Ethical Hacker (CEH) 2025 – 400 Free Practice Questions to Pass the Exam

The Canonical Name (CNAME) record is specifically designed for aliasing one domain name to another. It allows multiple domain names to refer to a single IP address by providing an alias that points to the true or canonical domain. This is useful in situations where you might want to point different services or subdomains to the same IP address without having to create separate A records for each one.

For example, if you have a website at `www.example.com` and you want to also have `blog.example.com` point to the same server, you would use a CNAME record to make `blog.example.com` an alias for `www.example.com`, simplifying DNS management.

In contrast, the other types of records serve different functions. Mail Exchange (MX) records are used to direct email to the appropriate mail servers. Address (A) records map a domain name directly to an IP address rather than creating an alias. Zone Transfer Records are used for transferring DNS information between primary and secondary DNS servers and do not pertain to aliasing. Thus, the CNAME record is the correct choice when discussing domain name aliasing.