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First of all, why would anyone think it has an effect?
Imagine you have a building and half of the tenants are criminals. You will logically conclude that all are criminals when half of them are bad. It's the same with hosting that has problematic users. However, there are more problems here.
Criminals do not stay in one place for too long, due to the possibility of blocking and they often change their place of residence, the same is the case with sites that deal with scams or have viruses. They change hosting frequently because of the problems they cause.
Semrush says it affects
Yes, like some other tools it has among its statistics that it affects because it shows the IP address. However, this is not always the case.
Is IP a ranking factor at all?
How much credibility would we have if we wrote in this article that it does not affect because we are dealing with hosting? That's why we don't want any, but the world portal that deals with the ranking of sites on Google.
According to an article from Search Engine Journal, IP addresses are not a ranking factor for Google. The article explains that, despite speculation in the past, IP addresses, shared hosting, and so-called "bad neighborhood" addresses do not play a role in Google's website ranking algorithm. You can read the details in the full article here.
How can we be sure?
Pretty simple. You've probably heard of CloudFlare, it has one IP for millions of sites. Imagine if the proxy had every IP for every user is not practical. Therefore, there are millions of sites with the same IP, and therefore IP rights cannot be seen or influenced. Based on this, Google has decided that it is not a ranking factor.
When we think about it a little more, there is some truth in that, because why would they punish other sites because of some bad tenant, who in the short term is punished by being blocked by the provider or something else.

