footprint for Google?

I don't wanna get too paranoid but I am kinda curious haha
Do you think if I have a list of 20 PBNs and I check their indexation one by one via the command "site:" that will be a footprint?

I know google stores IP of each query performed using their engine and furthermore this command seems more to be used by people doing SEO

I do that to look at competitors ALL the time... if Google punished that they would be giving us a weapon to demote competitors... I think what is more likely to get people in trouble is account switching from the same computer and accidentally linking the accounts by association. It is rare but I have seen people get banned by google for simply having an associated account... so we know they store and act on this kind of information... In one case a client's employee clicked his own ads on his separate personal account. His personal account was associated with his employers advertising account because of account switching on the same computer. The employer was hit with a permanent ban from AdSense. We eventually got the ban lifted but it took about 6 years and cost his employer millions of dollars in lost ad revenue.

in terms of site: I think you are safe.

Nothing to worry about.