I am having trouble finding out what my real backlink count is. Serpbook shows that I have 20K backlinks while ahrefs shows I have about 1,500. I emailed Serpbook and asked them how they calculate backlinks and they said they use the data from Majestic SEO so I checked there and sure enough it shows 20K backlinks too. I know I haven't built that many so I thought maybe I had been victim of a neg SEO attack and decided to sign up for a disavow service. The disavow service only detected around 700 backlinks. So now I'm completely confused. Can someone help me understand what my real backlink count is and why all these services show drastically different numbers.