A wildcard DNS record uses an asterisk (*) to match any subdomain that doesn't have a specific DNS record. For example, a wildcard A record at *.example.com would direct any-subdomain.example.com to a specified IP address. Wildcard DNS is useful for platforms that dynamically create subdomains, like user.platform.com, without requiring individual DNS records for each user.
FAQ
What is wildcard DNS?
Wildcard DNS is a catch-all record that directs any undefined subdomain to a specific server. It uses an asterisk (*) as the subdomain.