Little known backlinks methods!

There is a large method of backlinks schemes, especially outreach, crowd marketing, PBN etc.

But what have you heard about sites that show the cost of the site, then keywords analyzers, sites that show registration statistics?

Do you have lists of such sites?

For example "Keyword Analysis & Research" websites - example

I liked the clickbait title but I don’t understand what exactly are you trying to ask can you add more information

Mr Positive said:

I liked the clickbait title but I don’t understand what exactly are you trying to ask can you add more information

Click to expand...

I mean what I discovered through ahrefs of my competitor, who has more than 5 thousand keywords are in the top 10.
So, on his main pages made backlinks through the services of which I ask about...

the question is whether someone has a list of such services or where you can read more about it.

Websites like these: 1 2