DNAME is a DNS record that aliases an entire domain subtree to another domain. Point example.com's DNAME at target.com, and all subdomains (mail.example.com, www.example.com, etc.) resolve to their corresponding targets (mail.target.com, www.target.com) automatically.
Unlike CNAME, which only aliases a single hostname, DNAME works recursively across the whole branch. This makes it useful for domain migrations, bulk subdomain redirects, and operational convenience—though it's rarely deployed in the wild because most registrars and DNS operators either don't fully support it or don't understand it.
Bunkerdomains supports DNAME records in your zone file if you're self-hosting or using a compatible DNS provider. It's handy if you're migrating infrastructure or operating multiple identities under a single apex. Just know: DNAME requires proper DNSSEC chaining if you're using it; otherwise some resolvers may reject it. Also, some legacy systems choke on DNAME. Test before you burn bridges.