Block propagation for a specific record A

[Job]

Hello,

for a test page purpuose, we would like to avoid propagation only for a specific record A, example:
test.domain.com

We need to test if users set up our DNS server in ethernet configuration, and they display correctly the test page.
But, if test.domain.com propagate, we are not sure they use our DNS server!

Is there a way?

Thank you!
Francesco