Take-Two Interactive (Rockstar Games’ parent company) registered gtavicecityonline.com domain. It was found out by Reddit user cmputerguy. If you try to access the website it will return an error. However, who.is service provides detailed information about this domain.
It is not clear whether it is related to GTA 6 or Take-Two Interactive registered the domain ‘just in case’. Neither Take-Two nor Rockstar Games comment about this.