antdude Not DNS, but web filtering categorization. Palo Alto Networks accepted the web categorization change from parked to computers-and-internet-info. It should be available in the next web content database update.
Parked or newly registered domains can be leveraged to carry out fly by night attacks so generally those are blocked on corporate networks. Organically in time as sites are accessed, a reputation and categorization is done which can open up the site depending on the companies web filtering policy. This reputation takes time to build which could be weeks or months, so instead of waiting I opened a ticket.