Mapped Domains are not working

Added the domain in the host and pointed to the multisite root. In dns checker https://dnschecker.org it shows the same IP.
The domain is not loading the main site instead it loads the host's default fall back page. It did not through any error when added in the subsite domain mapping settings.
But it shows the status as invalid. I have changed the DNS settings 24 - 30 hours ago. I also have two other mapped domains in two other sites which are showing the status invalid and I have added them months ago.