404. That’s an error.

The requested URL /bookmarks/mark?op=add&bkmk=https%3A%2F%2Fwww.adminsub.net%2Fmac-address-finder&title=MAC+address%2Fvendor+lookup+and+search+-+look+up+MAC+address%2C+identify+MAC+address%2C+check+MAC+adress+-+adminsub.net was not found on this server. That’s all we know.