Basically, competitor is ranking above my brand for my brand related terms. He has no reference to my brand in the text on his website or his code, yet google has him in the number 1 position for "my company name reviews". I have looked at Ahrefs and searched my branded term for his backlinks and came away with nothing. Is it likely that my competitor is using a PBN and blocking access? If so, wouldn't I be able to find the PBN in the google serps if i spent a lot of time searching for it? i don't believe it's possible that google would rank competitor above my site for "my company reviews" terms without competitor doing off page SEO since he has no mention of my brand on the page he is ranking in the serps.