I have been wondering why are there many domain names assigning public address that already owned by other (apart from shared hosting/ip), for example hundreds or thousands domain names assigned (or resolving) public dns (e.g. 8.8.8.8) as their IP address: 8.8.8.8 IP address information and many other.
- Is this even allowed and what is the purpose of it?
- Are there any pros and cons about it?