If one adds a Wildcard subdomain entry in the DNS Zone, for example:
*.example.com. 3600 IN A <Some IP>
How much of a query for say somerandomsubdomain.example.com
be cached?
After some research I did find out that example.com
will be cached at various points and thus my DNS server can directly query example.com
DNS server for the subsequent anotherrandom.example.com
.
But do Servers/routers/OS while caching also cache that *.example.com
is a wildcard entry and hence all future queries for other random subdomains of example.com
be resolved immediately?