a Premium Domain , are special reserved domain name from new TLD such as .VIP / .TOP etc 

the shorter or more memorable names often come with a much higher pricetag and renewal rates compare to the normal domain name in the same extension. 
at this point , we can only process the domain and attempt to register an available domain . upon confirming the premium status of the domain name, we will revert back to customer who is applying the domain name to change the domain or proceed with premium rate quoted







for a list of New TLD database refer : https://newgtlds.icann.org/en/program-status/delegated-strings