Issue with associated hosts

[Hightmar]

I don't know if this is really an issue or if I've misunderstood, but from the following description:

Associated Hosts

This task involves identifying and listing all domains and subdomains (hostnames) that are associated with the website's primary domain. This process often involves DNS enumeration to discover any linked domains and hostnames, as well as looking at known DNS records.

I understand that the result is supposed to be a list of domains associated with the IP?

For example, if I search on DNSlytics for a domain or an IP, it gives me a list of all the domains present on the same hosting.

If it's not an issue and I've misunderstood, would it be possible to add this feature?

dnsutils is installed on my machine.

edit : I just saw this ticket #25
I haven't found a good API for this feature, either free or inexpensive. However, I did find this repo. I tested it and it works. Is it possible to implement the functionality this way?